JAVA, SPRING, ANGULAR, HIBERNATE AND ANDROIDALL TUTORIALSJAVA 8SPRING BOOTANGULARANDROIDJACKSON API ConcretePage.com helps the software developers and interviewees. We write topics mainly on core java, j2ee and java frameworks with example and concrete explanation. SPRING @REQUESTBODY EXAMPLE This page will walk through Spring @RequestBody annotation example. The @RequestBody is annotated at method parameter level to indicate that this method parameter will bound to web request body. The consumes attribute of @RequestMapping can specify the media types acceptable to @RequestBody parameter. The @RequestBody can be used with HTTP methods POST, PUT etc. ANGULAR MATERIAL MATPAGINATOR Angular Material MatPaginator. The MatPaginator is a directive that provides navigation between paged information. The navigator displays the size of the current page, options to change the page size, buttons to go previous and next page. The MatPaginator has the selector as mat-paginator. The properties of MatPaginator are 'color', 'disabled @SPYBEAN EXAMPLE IN SPRING TEST On this page we will learn using @SpyBean annotation in Spring Boot unit test cases. Let us understand @SpyBean point-by-point. 1. The @SpyBean is a Spring Boot test annotation that is used to add Mockito spies to ApplicationContext. 2. Spies can be applied by type or bean name. 3. All existing beans of the same type defined in the context will be wrapped with spy and if no existing bean then ANGULAR FORMCONTROL SETVALUE() value: The new value for the control. The options determines how the control propagates changes and emits events when the value changes. The options consists following configurations: onlySelf: If true, each value change will affect only this control and not its parent.Default is false. emitEvent: If true, both the statusChanges and valueChanges observables emit events with the latest ANGULAR MATERIAL TAB WITH ROUTING Angular Material provides mat-tab-nav-bar and mat-tab-link to use Angular Material tabs with Angular routing. mat-tab-nav-bar The mat-tab-nav-bar is the selector of MatTabNav directive. It is used for anchored navigation with animated ink bar. It has the properties such as 'backgroundColor', 'color', 'disablePagination', 'disableRipple'. SPRING RESTTEMPLATE.GETFORENTITY() This page will walk through Spring RestTemplate.getForEntity() method example. The getForEntity method retrieves resources from the given URI or URL templates. It returns response as ResponseEntity using which we can get response status code, response body etc. To fetch data on the basis of some key properties, we can send them as path

variables.

SPRING @RESPONSEBODY EXAMPLE This page will walk through Spring @ResponseBody example. The @ResponseBody annotation indicates that the return value of the method will be the body of web response. The @ResponseBody annotation is used at method level or method return type level. The @ResponseBody constructs the response body as JSON or XML or other media type based on following points. SPRING PROPERTYPLACEHOLDERCONFIGURER EXAMPLE PropertyPlaceholderConfigurer using Annotation To use PropertyPlaceholderConfigurer using annotation, we will create a static bean of it in java configuration class. To externalize the properties we will use PropertyPlaceholderConfigurer with @PropertySource and @Value. @PropertySource: It loads property file. @Value: It is used for expression-driven dependency injection. ANGULAR NGAFTERVIEWINIT() Angular ngAfterViewInit() is the method of AfterViewInit interface.ngAfterViewInit() is a lifecycle hook that is called after Angular has fully initialized a component's views.ngAfterViewInit() is used to handle any additional initialization tasks. Find the AfterViewInit interface code from Angular doc. JAVA, SPRING, ANGULAR, HIBERNATE AND ANDROIDALL TUTORIALSJAVA 8SPRING BOOTANGULARANDROIDJACKSON API ConcretePage.com helps the software developers and interviewees. We write topics mainly on core java, j2ee and java frameworks with example and concrete explanation. ANGULAR MATERIAL MATPAGINATOR Angular Material MatPaginator. The MatPaginator is a directive that provides navigation between paged information. The navigator displays the size of the current page, options to change the page size, buttons to go previous and next page. The MatPaginator has the selector as mat-paginator. The properties of MatPaginator are 'color', 'disabled @SPYBEAN EXAMPLE IN SPRING TEST On this page we will learn using @SpyBean annotation in Spring Boot unit test cases. Let us understand @SpyBean point-by-point. 1. The @SpyBean is a Spring Boot test annotation that is used to add Mockito spies to ApplicationContext. 2. Spies can be applied by type or bean name. 3. All existing beans of the same type defined in the context will be wrapped with spy and if no existing bean then SPRING @REQUESTBODY EXAMPLE This page will walk through Spring @RequestBody annotation example. The @RequestBody is annotated at method parameter level to indicate that this method parameter will bound to web request body. The consumes attribute of @RequestMapping can specify the media types acceptable to @RequestBody parameter. The @RequestBody can be used with HTTP methods POST, PUT etc. ANGULAR FORMCONTROL SETVALUE() value: The new value for the control. The options determines how the control propagates changes and emits events when the value changes. The options consists following configurations: onlySelf: If true, each value change will affect only this control and not its parent.Default is false. emitEvent: If true, both the statusChanges and valueChanges observables emit events with the latest ANGULAR MATERIAL TAB WITH ROUTING Angular Material provides mat-tab-nav-bar and mat-tab-link to use Angular Material tabs with Angular routing. mat-tab-nav-bar The mat-tab-nav-bar is the selector of MatTabNav directive. It is used for anchored navigation with animated ink bar. It has the properties such as 'backgroundColor', 'color', 'disablePagination', 'disableRipple'. ANGULAR NGAFTERVIEWINIT() Angular ngAfterViewInit() is the method of AfterViewInit interface.ngAfterViewInit() is a lifecycle hook that is called after Angular has fully initialized a component's views.ngAfterViewInit() is used to handle any additional initialization tasks. Find the AfterViewInit interface code from Angular doc. SPRING RESTTEMPLATE.GETFORENTITY() This page will walk through Spring RestTemplate.getForEntity() method example. The getForEntity method retrieves resources from the given URI or URL templates. It returns response as ResponseEntity using which we can get response status code, response body etc. To fetch data on the basis of some key properties, we can send them as path

variables.

SPRING @RESPONSEBODY EXAMPLE This page will walk through Spring @ResponseBody example. The @ResponseBody annotation indicates that the return value of the method will be the body of web response. The @ResponseBody annotation is used at method level or method return type level. The @ResponseBody constructs the response body as JSON or XML or other media type based on following points. SPRING PROPERTYPLACEHOLDERCONFIGURER EXAMPLE PropertyPlaceholderConfigurer using Annotation To use PropertyPlaceholderConfigurer using annotation, we will create a static bean of it in java configuration class. To externalize the properties we will use PropertyPlaceholderConfigurer with @PropertySource and @Value. @PropertySource: It loads property file. @Value: It is used for expression-driven dependency injection. JAVA, SPRING, ANGULAR, HIBERNATE AND ANDROID ConcretePage.com helps the software developers and interviewees. We write topics mainly on core java, j2ee and java frameworks with example and concrete explanation. ACTIVATE MAVEN PROFILE BY OS 1. : The name of the OS. 2. : The family of OS such as dos, mac, netware, os/2, tandem, unix, windows, win9x, z/os, os/400 . 3. : CPU architecture. 4. : The version of the OS. 5. : Flag to display the detected OS information. 6. : An optional message to the user in case of fail. Find the sample Maven code with a profile that will be

activated by

ANGULAR MATERIAL SLIDER Angular Material MatSlider directive creates slider that is used to select from a range of values by moving the slider thumb. The selector for MatSlider is mat-slider.The properties of mat-slider are 'value', 'valueText', 'vertical', 'color', 'disabled', 'displayWith', 'invert', 'max', 'min', 'step', 'thumbLabel' and 'tickInterval'. The events of mat-slider are 'change' and 'input'. ANGULAR MATERIAL GRID LIST EXAMPLE Angular Material Grid List Example. On this page we will discuss creating Angular material Grid List. To create grid list we need to know following directives. 1. MatGridList. The selector for MatGridList is mat-grid-list. The mat-grid-list is a two-dimensional

list

ANGULAR TEST BUTTON CLICK 1. On click of Set button, we are calling a function that sets a value to a component property. We will test that button is clicked and value is set to property and bound to HTML. 2. On click of Send button, we are calling a function. We will test that function is called. 3. ANGULAR FORMCONTROL ADD AND REMOVE VALIDATORS DYNAMICALLY The setValidators will first clear all existing sync validators and then add the given sync validators. Make sure to call updateValueAndValidity after adding validators to take effect the validation. 2. Now we will add validators to username control. This control has already required validator configured. When we add validators using setValidators, the existing sync validator will be SPRING @RESPONSEBODY EXAMPLE This page will walk through Spring @ResponseBody example. The @ResponseBody annotation indicates that the return value of the method will be the body of web response. The @ResponseBody annotation is used at method level or method return type level. The @ResponseBody constructs the response body as JSON or XML or other media type based on following points. SPRING RESTTEMPLATE.GETFOROBJECT() This page will walk through Spring RestTemplate.getForObject() method example. The getForObject method fetches the data for the given response type from the given URI or URL template using HTTP GET method. To fetch data for the given key properties from URL template we can pass Object Varargs and Map to getForObject method. The getForObject returns directly the object of given ANGULAR MATERIAL DATEPICKER FORMAT Using this date format Datepicker parses the input date and then displays it in its display date input format. (2) display: { dateInput: 'MMM DD, YYYY', } The dateInput property in display section is the date format in which Datepicker displays the date in input box. Either date can be selected from calendar or date can be entered

manually.

RESTTEMPLATE GETFOROBJECT() VS GETFORENTITY() RestTemplate.getForEntity () The getForEntity method retrieves resources from the given URI or URL templates. It returns response as ResponseEntity using which we can get response status code, response body etc. To fetch data on the basis of some key JAVA, SPRING, ANGULAR, HIBERNATE AND ANDROIDALL TUTORIALSJAVA 8SPRING BOOTANGULARANDROIDJACKSON API ConcretePage.com helps the software developers and interviewees. We write topics mainly on core java, j2ee and java frameworks with example and concrete explanation. SPRING @REQUESTBODY EXAMPLE This page will walk through Spring @RequestBody annotation example. The @RequestBody is annotated at method parameter level to indicate that this method parameter will bound to web request body. The consumes attribute of @RequestMapping can specify the media types acceptable to @RequestBody parameter. The @RequestBody can be used with HTTP methods POST, PUT etc. ANGULAR MATERIAL MATPAGINATOR Angular Material MatPaginator. The MatPaginator is a directive that provides navigation between paged information. The navigator displays the size of the current page, options to change the page size, buttons to go previous and next page. The MatPaginator has the selector as mat-paginator. The properties of MatPaginator are 'color', 'disabled @SPYBEAN EXAMPLE IN SPRING TEST On this page we will learn using @SpyBean annotation in Spring Boot unit test cases. Let us understand @SpyBean point-by-point. 1. The @SpyBean is a Spring Boot test annotation that is used to add Mockito spies to ApplicationContext. 2. Spies can be applied by type or bean name. 3. All existing beans of the same type defined in the context will be wrapped with spy and if no existing bean then ANGULAR FORMCONTROL SETVALUE() value: The new value for the control. The options determines how the control propagates changes and emits events when the value changes. The options consists following configurations: onlySelf: If true, each value change will affect only this control and not its parent.Default is false. emitEvent: If true, both the statusChanges and valueChanges observables emit events with the latest ANGULAR MATERIAL TAB WITH ROUTING Angular Material provides mat-tab-nav-bar and mat-tab-link to use Angular Material tabs with Angular routing. mat-tab-nav-bar The mat-tab-nav-bar is the selector of MatTabNav directive. It is used for anchored navigation with animated ink bar. It has the properties such as 'backgroundColor', 'color', 'disablePagination', 'disableRipple'. SPRING RESTTEMPLATE.GETFORENTITY() This page will walk through Spring RestTemplate.getForEntity() method example. The getForEntity method retrieves resources from the given URI or URL templates. It returns response as ResponseEntity using which we can get response status code, response body etc. To fetch data on the basis of some key properties, we can send them as path

variables.

SPRING @RESPONSEBODY EXAMPLE This page will walk through Spring @ResponseBody example. The @ResponseBody annotation indicates that the return value of the method will be the body of web response. The @ResponseBody annotation is used at method level or method return type level. The @ResponseBody constructs the response body as JSON or XML or other media type based on following points. SPRING PROPERTYPLACEHOLDERCONFIGURER EXAMPLE PropertyPlaceholderConfigurer using Annotation To use PropertyPlaceholderConfigurer using annotation, we will create a static bean of it in java configuration class. To externalize the properties we will use PropertyPlaceholderConfigurer with @PropertySource and @Value. @PropertySource: It loads property file. @Value: It is used for expression-driven dependency injection. ANGULAR NGAFTERVIEWINIT() Angular ngAfterViewInit() is the method of AfterViewInit interface.ngAfterViewInit() is a lifecycle hook that is called after Angular has fully initialized a component's views.ngAfterViewInit() is used to handle any additional initialization tasks. Find the AfterViewInit interface code from Angular doc. JAVA, SPRING, ANGULAR, HIBERNATE AND ANDROIDALL TUTORIALSJAVA 8SPRING BOOTANGULARANDROIDJACKSON API ConcretePage.com helps the software developers and interviewees. We write topics mainly on core java, j2ee and java frameworks with example and concrete explanation. SPRING @REQUESTBODY EXAMPLE This page will walk through Spring @RequestBody annotation example. The @RequestBody is annotated at method parameter level to indicate that this method parameter will bound to web request body. The consumes attribute of @RequestMapping can specify the media types acceptable to @RequestBody parameter. The @RequestBody can be used with HTTP methods POST, PUT etc. ANGULAR MATERIAL MATPAGINATOR Angular Material MatPaginator. The MatPaginator is a directive that provides navigation between paged information. The navigator displays the size of the current page, options to change the page size, buttons to go previous and next page. The MatPaginator has the selector as mat-paginator. The properties of MatPaginator are 'color', 'disabled @SPYBEAN EXAMPLE IN SPRING TEST On this page we will learn using @SpyBean annotation in Spring Boot unit test cases. Let us understand @SpyBean point-by-point. 1. The @SpyBean is a Spring Boot test annotation that is used to add Mockito spies to ApplicationContext. 2. Spies can be applied by type or bean name. 3. All existing beans of the same type defined in the context will be wrapped with spy and if no existing bean then ANGULAR FORMCONTROL SETVALUE() value: The new value for the control. The options determines how the control propagates changes and emits events when the value changes. The options consists following configurations: onlySelf: If true, each value change will affect only this control and not its parent.Default is false. emitEvent: If true, both the statusChanges and valueChanges observables emit events with the latest ANGULAR MATERIAL TAB WITH ROUTING Angular Material provides mat-tab-nav-bar and mat-tab-link to use Angular Material tabs with Angular routing. mat-tab-nav-bar The mat-tab-nav-bar is the selector of MatTabNav directive. It is used for anchored navigation with animated ink bar. It has the properties such as 'backgroundColor', 'color', 'disablePagination', 'disableRipple'. SPRING RESTTEMPLATE.GETFORENTITY() This page will walk through Spring RestTemplate.getForEntity() method example. The getForEntity method retrieves resources from the given URI or URL templates. It returns response as ResponseEntity using which we can get response status code, response body etc. To fetch data on the basis of some key properties, we can send them as path

variables.

SPRING @RESPONSEBODY EXAMPLE This page will walk through Spring @ResponseBody example. The @ResponseBody annotation indicates that the return value of the method will be the body of web response. The @ResponseBody annotation is used at method level or method return type level. The @ResponseBody constructs the response body as JSON or XML or other media type based on following points. SPRING PROPERTYPLACEHOLDERCONFIGURER EXAMPLE PropertyPlaceholderConfigurer using Annotation To use PropertyPlaceholderConfigurer using annotation, we will create a static bean of it in java configuration class. To externalize the properties we will use PropertyPlaceholderConfigurer with @PropertySource and @Value. @PropertySource: It loads property file. @Value: It is used for expression-driven dependency injection. ANGULAR NGAFTERVIEWINIT() Angular ngAfterViewInit() is the method of AfterViewInit interface.ngAfterViewInit() is a lifecycle hook that is called after Angular has fully initialized a component's views.ngAfterViewInit() is used to handle any additional initialization tasks. Find the AfterViewInit interface code from Angular doc. JAVA, SPRING, ANGULAR, HIBERNATE AND ANDROID ConcretePage.com helps the software developers and interviewees. We write topics mainly on core java, j2ee and java frameworks with example and concrete explanation. ACTIVATE MAVEN PROFILE BY OS 1. : The name of the OS. 2. : The family of OS such as dos, mac, netware, os/2, tandem, unix, windows, win9x, z/os, os/400 . 3. : CPU architecture. 4. : The version of the OS. 5. : Flag to display the detected OS information. 6. : An optional message to the user in case of fail. Find the sample Maven code with a profile that will be

activated by

ANGULAR MATERIAL SLIDER Angular Material MatSlider directive creates slider that is used to select from a range of values by moving the slider thumb. The selector for MatSlider is mat-slider.The properties of mat-slider are 'value', 'valueText', 'vertical', 'color', 'disabled', 'displayWith', 'invert', 'max', 'min', 'step', 'thumbLabel' and 'tickInterval'. The events of mat-slider are 'change' and 'input'. ANGULAR MATERIAL GRID LIST EXAMPLE Angular Material Grid List Example. On this page we will discuss creating Angular material Grid List. To create grid list we need to know following directives. 1. MatGridList. The selector for MatGridList is mat-grid-list. The mat-grid-list is a two-dimensional

list

ANGULAR TEST BUTTON CLICK 1. On click of Set button, we are calling a function that sets a value to a component property. We will test that button is clicked and value is set to property and bound to HTML. 2. On click of Send button, we are calling a function. We will test that function is called. 3. ANGULAR FORMCONTROL ADD AND REMOVE VALIDATORS DYNAMICALLY The setValidators will first clear all existing sync validators and then add the given sync validators. Make sure to call updateValueAndValidity after adding validators to take effect the validation. 2. Now we will add validators to username control. This control has already required validator configured. When we add validators using setValidators, the existing sync validator will be SPRING @RESPONSEBODY EXAMPLE This page will walk through Spring @ResponseBody example. The @ResponseBody annotation indicates that the return value of the method will be the body of web response. The @ResponseBody annotation is used at method level or method return type level. The @ResponseBody constructs the response body as JSON or XML or other media type based on following points. SPRING RESTTEMPLATE.GETFOROBJECT() This page will walk through Spring RestTemplate.getForObject() method example. The getForObject method fetches the data for the given response type from the given URI or URL template using HTTP GET method. To fetch data for the given key properties from URL template we can pass Object Varargs and Map to getForObject method. The getForObject returns directly the object of given ANGULAR MATERIAL DATEPICKER FORMAT Using this date format Datepicker parses the input date and then displays it in its display date input format. (2) display: { dateInput: 'MMM DD, YYYY', } The dateInput property in display section is the date format in which Datepicker displays the date in input box. Either date can be selected from calendar or date can be entered

manually.

RESTTEMPLATE GETFOROBJECT() VS GETFORENTITY() RestTemplate.getForEntity () The getForEntity method retrieves resources from the given URI or URL templates. It returns response as ResponseEntity using which we can get response status code, response body etc. To fetch data on the basis of some key JAVA, SPRING, ANGULAR, HIBERNATE AND ANDROIDALL TUTORIALSJAVA 8SPRING BOOTANGULARANDROIDJACKSON API ConcretePage.com helps the software developers and interviewees. We write topics mainly on core java, j2ee and java frameworks with example and concrete explanation. SPRING @REQUESTBODY EXAMPLE This page will walk through Spring @RequestBody annotation example. The @RequestBody is annotated at method parameter level to indicate that this method parameter will bound to web request body. The consumes attribute of @RequestMapping can specify the media types acceptable to @RequestBody parameter. The @RequestBody can be used with HTTP methods POST, PUT etc. ANGULAR MATERIAL MATPAGINATOR Angular Material MatPaginator. The MatPaginator is a directive that provides navigation between paged information. The navigator displays the size of the current page, options to change the page size, buttons to go previous and next page. The MatPaginator has the selector as mat-paginator. The properties of MatPaginator are 'color', 'disabled @SPYBEAN EXAMPLE IN SPRING TEST On this page we will learn using @SpyBean annotation in Spring Boot unit test cases. Let us understand @SpyBean point-by-point. 1. The @SpyBean is a Spring Boot test annotation that is used to add Mockito spies to ApplicationContext. 2. Spies can be applied by type or bean name. 3. All existing beans of the same type defined in the context will be wrapped with spy and if no existing bean then ANGULAR FORMCONTROL SETVALUE() value: The new value for the control. The options determines how the control propagates changes and emits events when the value changes. The options consists following configurations: onlySelf: If true, each value change will affect only this control and not its parent.Default is false. emitEvent: If true, both the statusChanges and valueChanges observables emit events with the latest ANGULAR MATERIAL TAB WITH ROUTING Angular Material provides mat-tab-nav-bar and mat-tab-link to use Angular Material tabs with Angular routing. mat-tab-nav-bar The mat-tab-nav-bar is the selector of MatTabNav directive. It is used for anchored navigation with animated ink bar. It has the properties such as 'backgroundColor', 'color', 'disablePagination', 'disableRipple'. SPRING RESTTEMPLATE.GETFORENTITY() This page will walk through Spring RestTemplate.getForEntity() method example. The getForEntity method retrieves resources from the given URI or URL templates. It returns response as ResponseEntity using which we can get response status code, response body etc. To fetch data on the basis of some key properties, we can send them as path

variables.

SPRING @RESPONSEBODY EXAMPLE This page will walk through Spring @ResponseBody example. The @ResponseBody annotation indicates that the return value of the method will be the body of web response. The @ResponseBody annotation is used at method level or method return type level. The @ResponseBody constructs the response body as JSON or XML or other media type based on following points. SPRING PROPERTYPLACEHOLDERCONFIGURER EXAMPLE PropertyPlaceholderConfigurer using Annotation To use PropertyPlaceholderConfigurer using annotation, we will create a static bean of it in java configuration class. To externalize the properties we will use PropertyPlaceholderConfigurer with @PropertySource and @Value. @PropertySource: It loads property file. @Value: It is used for expression-driven dependency injection. ANGULAR NGAFTERVIEWINIT() Angular ngAfterViewInit() is the method of AfterViewInit interface.ngAfterViewInit() is a lifecycle hook that is called after Angular has fully initialized a component's views.ngAfterViewInit() is used to handle any additional initialization tasks. Find the AfterViewInit interface code from Angular doc. JAVA, SPRING, ANGULAR, HIBERNATE AND ANDROIDALL TUTORIALSJAVA 8SPRING BOOTANGULARANDROIDJACKSON API ConcretePage.com helps the software developers and interviewees. We write topics mainly on core java, j2ee and java frameworks with example and concrete explanation. SPRING @REQUESTBODY EXAMPLE This page will walk through Spring @RequestBody annotation example. The @RequestBody is annotated at method parameter level to indicate that this method parameter will bound to web request body. The consumes attribute of @RequestMapping can specify the media types acceptable to @RequestBody parameter. The @RequestBody can be used with HTTP methods POST, PUT etc. ANGULAR MATERIAL MATPAGINATOR Angular Material MatPaginator. The MatPaginator is a directive that provides navigation between paged information. The navigator displays the size of the current page, options to change the page size, buttons to go previous and next page. The MatPaginator has the selector as mat-paginator. The properties of MatPaginator are 'color', 'disabled @SPYBEAN EXAMPLE IN SPRING TEST On this page we will learn using @SpyBean annotation in Spring Boot unit test cases. Let us understand @SpyBean point-by-point. 1. The @SpyBean is a Spring Boot test annotation that is used to add Mockito spies to ApplicationContext. 2. Spies can be applied by type or bean name. 3. All existing beans of the same type defined in the context will be wrapped with spy and if no existing bean then ANGULAR FORMCONTROL SETVALUE() value: The new value for the control. The options determines how the control propagates changes and emits events when the value changes. The options consists following configurations: onlySelf: If true, each value change will affect only this control and not its parent.Default is false. emitEvent: If true, both the statusChanges and valueChanges observables emit events with the latest ANGULAR MATERIAL TAB WITH ROUTING Angular Material provides mat-tab-nav-bar and mat-tab-link to use Angular Material tabs with Angular routing. mat-tab-nav-bar The mat-tab-nav-bar is the selector of MatTabNav directive. It is used for anchored navigation with animated ink bar. It has the properties such as 'backgroundColor', 'color', 'disablePagination', 'disableRipple'. SPRING RESTTEMPLATE.GETFORENTITY() This page will walk through Spring RestTemplate.getForEntity() method example. The getForEntity method retrieves resources from the given URI or URL templates. It returns response as ResponseEntity using which we can get response status code, response body etc. To fetch data on the basis of some key properties, we can send them as path

variables.

SPRING @RESPONSEBODY EXAMPLE This page will walk through Spring @ResponseBody example. The @ResponseBody annotation indicates that the return value of the method will be the body of web response. The @ResponseBody annotation is used at method level or method return type level. The @ResponseBody constructs the response body as JSON or XML or other media type based on following points. SPRING PROPERTYPLACEHOLDERCONFIGURER EXAMPLE PropertyPlaceholderConfigurer using Annotation To use PropertyPlaceholderConfigurer using annotation, we will create a static bean of it in java configuration class. To externalize the properties we will use PropertyPlaceholderConfigurer with @PropertySource and @Value. @PropertySource: It loads property file. @Value: It is used for expression-driven dependency injection. ANGULAR NGAFTERVIEWINIT() Angular ngAfterViewInit() is the method of AfterViewInit interface.ngAfterViewInit() is a lifecycle hook that is called after Angular has fully initialized a component's views.ngAfterViewInit() is used to handle any additional initialization tasks. Find the AfterViewInit interface code from Angular doc. JAVA, SPRING, ANGULAR, HIBERNATE AND ANDROID ConcretePage.com helps the software developers and interviewees. We write topics mainly on core java, j2ee and java frameworks with example and concrete explanation. ACTIVATE MAVEN PROFILE BY OS 1. : The name of the OS. 2. : The family of OS such as dos, mac, netware, os/2, tandem, unix, windows, win9x, z/os, os/400 . 3. : CPU architecture. 4. : The version of the OS. 5. : Flag to display the detected OS information. 6. : An optional message to the user in case of fail. Find the sample Maven code with a profile that will be

activated by

ANGULAR MATERIAL SLIDER Angular Material MatSlider directive creates slider that is used to select from a range of values by moving the slider thumb. The selector for MatSlider is mat-slider.The properties of mat-slider are 'value', 'valueText', 'vertical', 'color', 'disabled', 'displayWith', 'invert', 'max', 'min', 'step', 'thumbLabel' and 'tickInterval'. The events of mat-slider are 'change' and 'input'. ANGULAR MATERIAL GRID LIST EXAMPLE Angular Material Grid List Example. On this page we will discuss creating Angular material Grid List. To create grid list we need to know following directives. 1. MatGridList. The selector for MatGridList is mat-grid-list. The mat-grid-list is a two-dimensional

list

ANGULAR TEST BUTTON CLICK 1. On click of Set button, we are calling a function that sets a value to a component property. We will test that button is clicked and value is set to property and bound to HTML. 2. On click of Send button, we are calling a function. We will test that function is called. 3. ANGULAR FORMCONTROL ADD AND REMOVE VALIDATORS DYNAMICALLY The setValidators will first clear all existing sync validators and then add the given sync validators. Make sure to call updateValueAndValidity after adding validators to take effect the validation. 2. Now we will add validators to username control. This control has already required validator configured. When we add validators using setValidators, the existing sync validator will be SPRING @RESPONSEBODY EXAMPLE This page will walk through Spring @ResponseBody example. The @ResponseBody annotation indicates that the return value of the method will be the body of web response. The @ResponseBody annotation is used at method level or method return type level. The @ResponseBody constructs the response body as JSON or XML or other media type based on following points. SPRING RESTTEMPLATE.GETFOROBJECT() This page will walk through Spring RestTemplate.getForObject() method example. The getForObject method fetches the data for the given response type from the given URI or URL template using HTTP GET method. To fetch data for the given key properties from URL template we can pass Object Varargs and Map to getForObject method. The getForObject returns directly the object of given ANGULAR MATERIAL DATEPICKER FORMAT Using this date format Datepicker parses the input date and then displays it in its display date input format. (2) display: { dateInput: 'MMM DD, YYYY', } The dateInput property in display section is the date format in which Datepicker displays the date in input box. Either date can be selected from calendar or date can be entered

manually.

RESTTEMPLATE GETFOROBJECT() VS GETFORENTITY() RestTemplate.getForEntity () The getForEntity method retrieves resources from the given URI or URL templates. It returns response as ResponseEntity using which we can get response status code, response body etc. To fetch data on the basis of some key SPRING @REQUESTBODY EXAMPLE This page will walk through Spring @RequestBody annotation example. The @RequestBody is annotated at method parameter level to indicate that this method parameter will bound to web request body. The consumes attribute of @RequestMapping can specify the media types acceptable to @RequestBody parameter. The @RequestBody can be used with HTTP methods POST, PUT etc. SPRING DATA MONGOTEMPLATE EXAMPLE This page will walk through Spring Data MongoTemplate example. The MongoTemplate class is the primary implementation of MongoOperations interface which specifies the basic set of MongoDB operations. We can also use MongoRepository interface to perform MongoDB operations. The implementation class of MongoRepository uses MongoTemplate bean at run

time. To create

@CONTEXTCONFIGURATION EXAMPLE IN SPRING TEST @ContextConfiguration loads an ApplicationContext for Spring integration test.@ContextConfiguration can load ApplicationContext using XML resource or the JavaConfig annotated with @Configuration.The @ContextConfiguration annotation can also load a component annotated with @Component, @Service, @Repository etc. We can also load classes

annotated with

ANGULAR NGAFTERVIEWINIT() Angular ngAfterViewInit() is the method of AfterViewInit interface.ngAfterViewInit() is a lifecycle hook that is called after Angular has fully initialized a component's views.ngAfterViewInit() is used to handle any additional initialization tasks. Find the AfterViewInit interface code from Angular doc. SPRING PROPERTYPLACEHOLDERCONFIGURER EXAMPLE PropertyPlaceholderConfigurer using Annotation To use PropertyPlaceholderConfigurer using annotation, we will create a static bean of it in java configuration class. To externalize the properties we will use PropertyPlaceholderConfigurer with @PropertySource and @Value. @PropertySource: It loads property file. @Value: It is used for expression-driven dependency injection. SPRING RESTTEMPLATE.GETFOROBJECT() This page will walk through Spring RestTemplate.getForObject() method example. The getForObject method fetches the data for the given response type from the given URI or URL template using HTTP GET method. To fetch data for the given key properties from URL template we can pass Object Varargs and Map to getForObject method. The getForObject returns directly the object of given ANGULAR CUSTOM ASYNC VALIDATOR EXAMPLE Step-1: To install angular-in-memory-web-api, run below command from root folder of the project. npm i angular-in-memory-web-api@0.5.3 --save. Step-2: Create a class implementing InMemoryDbService interface. In our example we are creating an in-memory DB for users. JAVA COMPLETABLEFUTURE SUPPLYASYNC()BAELDUNG COMPLETABLEFUTURECOMPLETABLEFUTURE ALLOF JOINCOMPLETABLEFUTURE PDF On this page we will provide Java CompletableFuture.supplyAsync() example.supplyAsync() is a static method of CompletableFuture introduced in Java 8. The method supplyAsync() completes a task asynchronously running in either ForkJoinPool.commonPool() or given Executor.Find the method signatures. 1. supplyAsync(Supplier supplier) We need to pass a Supplier as a task to RESTTEMPLATE GETFOROBJECT() VS EXCHANGE() RestTemplate.exchange () The exchange method executes the request of any HTTP method and returns ResponseEntity instance. The exchange method can be used for HTTP DELETE, GET, HEAD, OPTIONS, PATCH, POST, PUT, TRACE methods. Using exchange method we can perform CRUD operation i.e. create, read, update and delete data. SPRING WEBFLUX : ANNOTATED CONTROLLERS VS FUNCTIONAL ENDPOINTS Annotated Controllers: 1. In annotation based programming, Spring WebFlux uses same annotations from Spring Web MVC module. 2. Spring Web MVC and Spring WebFlux both supports reactive return types such as

Reactor and RxJava.

SPRING @REQUESTBODY EXAMPLE This page will walk through Spring @RequestBody annotation example. The @RequestBody is annotated at method parameter level to indicate that this method parameter will bound to web request body. The consumes attribute of @RequestMapping can specify the media types acceptable to @RequestBody parameter. The @RequestBody can be used with HTTP methods POST, PUT etc. SPRING DATA MONGOTEMPLATE EXAMPLE This page will walk through Spring Data MongoTemplate example. The MongoTemplate class is the primary implementation of MongoOperations interface which specifies the basic set of MongoDB operations. We can also use MongoRepository interface to perform MongoDB operations. The implementation class of MongoRepository uses MongoTemplate bean at run

time. To create

@CONTEXTCONFIGURATION EXAMPLE IN SPRING TEST @ContextConfiguration loads an ApplicationContext for Spring integration test.@ContextConfiguration can load ApplicationContext using XML resource or the JavaConfig annotated with @Configuration.The @ContextConfiguration annotation can also load a component annotated with @Component, @Service, @Repository etc. We can also load classes

annotated with

ANGULAR NGAFTERVIEWINIT() Angular ngAfterViewInit() is the method of AfterViewInit interface.ngAfterViewInit() is a lifecycle hook that is called after Angular has fully initialized a component's views.ngAfterViewInit() is used to handle any additional initialization tasks. Find the AfterViewInit interface code from Angular doc. SPRING PROPERTYPLACEHOLDERCONFIGURER EXAMPLE PropertyPlaceholderConfigurer using Annotation To use PropertyPlaceholderConfigurer using annotation, we will create a static bean of it in java configuration class. To externalize the properties we will use PropertyPlaceholderConfigurer with @PropertySource and @Value. @PropertySource: It loads property file. @Value: It is used for expression-driven dependency injection. SPRING RESTTEMPLATE.GETFOROBJECT() This page will walk through Spring RestTemplate.getForObject() method example. The getForObject method fetches the data for the given response type from the given URI or URL template using HTTP GET method. To fetch data for the given key properties from URL template we can pass Object Varargs and Map to getForObject method. The getForObject returns directly the object of given ANGULAR CUSTOM ASYNC VALIDATOR EXAMPLE Step-1: To install angular-in-memory-web-api, run below command from root folder of the project. npm i angular-in-memory-web-api@0.5.3 --save. Step-2: Create a class implementing InMemoryDbService interface. In our example we are creating an in-memory DB for users. JAVA COMPLETABLEFUTURE SUPPLYASYNC()BAELDUNG COMPLETABLEFUTURECOMPLETABLEFUTURE ALLOF JOINCOMPLETABLEFUTURE PDF On this page we will provide Java CompletableFuture.supplyAsync() example.supplyAsync() is a static method of CompletableFuture introduced in Java 8. The method supplyAsync() completes a task asynchronously running in either ForkJoinPool.commonPool() or given Executor.Find the method signatures. 1. supplyAsync(Supplier supplier) We need to pass a Supplier as a task to RESTTEMPLATE GETFOROBJECT() VS EXCHANGE() RestTemplate.exchange () The exchange method executes the request of any HTTP method and returns ResponseEntity instance. The exchange method can be used for HTTP DELETE, GET, HEAD, OPTIONS, PATCH, POST, PUT, TRACE methods. Using exchange method we can perform CRUD operation i.e. create, read, update and delete data. SPRING WEBFLUX : ANNOTATED CONTROLLERS VS FUNCTIONAL ENDPOINTS Annotated Controllers: 1. In annotation based programming, Spring WebFlux uses same annotations from Spring Web MVC module. 2. Spring Web MVC and Spring WebFlux both supports reactive return types such as

Reactor and RxJava.

ACTIVATE MAVEN PROFILE BY OS 1. : The name of the OS. 2. : The family of OS such as dos, mac, netware, os/2, tandem, unix, windows, win9x, z/os, os/400 . 3. : CPU architecture. 4. : The version of the OS. 5. : Flag to display the detected OS information. 6. : An optional message to the user in case of fail. Find the sample Maven code with a profile that will be

activated by

ANGULAR FORMCONTROL SETVALUE() value: The new value for the control. The options determines how the control propagates changes and emits events when the value changes. The options consists following configurations: onlySelf: If true, each value change will affect only this control and not its parent.Default is false. emitEvent: If true, both the statusChanges and valueChanges observables emit events with the latest SPRING RESTTEMPLATE.GETFOROBJECT() This page will walk through Spring RestTemplate.getForObject() method example. The getForObject method fetches the data for the given response type from the given URI or URL template using HTTP GET method. To fetch data for the given key properties from URL template we can pass Object Varargs and Map to getForObject method. The getForObject returns directly the object of given ANGULAR EMAIL VALIDATION EXAMPLE This page will walk through Angular Email validation example. We can validate email using EmailValidator and PatternValidator directive.EmailValidator provides in-built email validation.PatternValidator uses regex to validate email. So we can use PatternValidator for custom email validation. For EmailValidator we need to use email attribute in controls such as text input and use ANGULAR REQUIRED VALIDATION EXAMPLE This page will walk through Angular required validation example. Angular provides RequiredValidator directive for required validation. In template-driven form, HTML elements use required attribute for required validation and reactive form uses Validators.required with FormControl while creating FormGroup.In reactive form Validators.requiredTrue validates a control for true value and we SPRING RESTTEMPLATE.POSTFOROBJECT() Spring RestTemplate.postForObject () This page will walk through Spring RestTemplate.postForObject () method example. The postForObject method creates a new resource by posting the given object to given url or URI template using HTTP POST method. Request object is the payload to post and we can also use request as HttpEntity that helps to add ANGULAR 2/4 ONCHANGES + SIMPLECHANGES EXAMPLE Angular 2/4 OnChanges + SimpleChanges Example. By Arvind Rai, July 27, 2017. On this page we will provide Angular OnChanges and SimpleChanges example. Angular provides lifecycle hooks for change detection. OnChanges is an interface and has a method declaration i.e ngOnChanges () . In parent-child component, the child component declares @Input JACKSON @JSONPROPERTY AND @JSONALIAS EXAMPLE If we are defining logical property using @JsonProperty, both @JsonProperty and @JsonAlias can be used as following. @JsonProperty("bookCategory") @JsonAlias( {"bkcat", "mybkcat"}) private String category; In the above code, the actual logical property is bookCategory and alias is bkcat and mybkcat. At the time of deserialization either JSON is. SPRING BOOT @CONFIGURATIONPROPERTIES EXAMPLE Spring Boot @ConfigurationProperties is annotation for externalized configuration. To inject property value from a property file to a class, we can add @ConfigurationProperties at a class level with stereotype annotations such as @Component or add @ConfigurationProperties to a @Bean method in a @Configuration class.@ConfigurationProperties is used to bind and validate external

properties

ANGULAR MAP VS FILTER map is a RxJS pipeable operator.map applies a given function to each element emitted by the source Observableand emits the resulting values as an Observable. map is used with pipe which is an instance method of

Observable.

SPRING @REQUESTBODY EXAMPLE This page will walk through Spring @RequestBody annotation example. The @RequestBody is annotated at method parameter level to indicate that this method parameter will bound to web request body. The consumes attribute of @RequestMapping can specify the media types acceptable to @RequestBody parameter. The @RequestBody can be used with HTTP methods POST, PUT etc. SPRING DATA MONGOTEMPLATE EXAMPLE This page will walk through Spring Data MongoTemplate example. The MongoTemplate class is the primary implementation of MongoOperations interface which specifies the basic set of MongoDB operations. We can also use MongoRepository interface to perform MongoDB operations. The implementation class of MongoRepository uses MongoTemplate bean at run

time. To create

@CONTEXTCONFIGURATION EXAMPLE IN SPRING TEST @ContextConfiguration loads an ApplicationContext for Spring integration test.@ContextConfiguration can load ApplicationContext using XML resource or the JavaConfig annotated with @Configuration.The @ContextConfiguration annotation can also load a component annotated with @Component, @Service, @Repository etc. We can also load classes

annotated with

ANGULAR NGAFTERVIEWINIT() Angular ngAfterViewInit() is the method of AfterViewInit interface.ngAfterViewInit() is a lifecycle hook that is called after Angular has fully initialized a component's views.ngAfterViewInit() is used to handle any additional initialization tasks. Find the AfterViewInit interface code from Angular doc. SPRING PROPERTYPLACEHOLDERCONFIGURER EXAMPLE PropertyPlaceholderConfigurer using Annotation To use PropertyPlaceholderConfigurer using annotation, we will create a static bean of it in java configuration class. To externalize the properties we will use PropertyPlaceholderConfigurer with @PropertySource and @Value. @PropertySource: It loads property file. @Value: It is used for expression-driven dependency injection. SPRING RESTTEMPLATE.GETFOROBJECT() This page will walk through Spring RestTemplate.getForObject() method example. The getForObject method fetches the data for the given response type from the given URI or URL template using HTTP GET method. To fetch data for the given key properties from URL template we can pass Object Varargs and Map to getForObject method. The getForObject returns directly the object of given ANGULAR CUSTOM ASYNC VALIDATOR EXAMPLE Step-1: To install angular-in-memory-web-api, run below command from root folder of the project. npm i angular-in-memory-web-api@0.5.3 --save. Step-2: Create a class implementing InMemoryDbService interface. In our example we are creating an in-memory DB for users. JAVA COMPLETABLEFUTURE SUPPLYASYNC()BAELDUNG COMPLETABLEFUTURECOMPLETABLEFUTURE ALLOF JOINCOMPLETABLEFUTURE PDF On this page we will provide Java CompletableFuture.supplyAsync() example.supplyAsync() is a static method of CompletableFuture introduced in Java 8. The method supplyAsync() completes a task asynchronously running in either ForkJoinPool.commonPool() or given Executor.Find the method signatures. 1. supplyAsync(Supplier supplier) We need to pass a Supplier as a task to RESTTEMPLATE GETFOROBJECT() VS EXCHANGE() RestTemplate.exchange () The exchange method executes the request of any HTTP method and returns ResponseEntity instance. The exchange method can be used for HTTP DELETE, GET, HEAD, OPTIONS, PATCH, POST, PUT, TRACE methods. Using exchange method we can perform CRUD operation i.e. create, read, update and delete data. SPRING WEBFLUX : ANNOTATED CONTROLLERS VS FUNCTIONAL ENDPOINTS Annotated Controllers: 1. In annotation based programming, Spring WebFlux uses same annotations from Spring Web MVC module. 2. Spring Web MVC and Spring WebFlux both supports reactive return types such as

Reactor and RxJava.

SPRING @REQUESTBODY EXAMPLE This page will walk through Spring @RequestBody annotation example. The @RequestBody is annotated at method parameter level to indicate that this method parameter will bound to web request body. The consumes attribute of @RequestMapping can specify the media types acceptable to @RequestBody parameter. The @RequestBody can be used with HTTP methods POST, PUT etc. SPRING DATA MONGOTEMPLATE EXAMPLE This page will walk through Spring Data MongoTemplate example. The MongoTemplate class is the primary implementation of MongoOperations interface which specifies the basic set of MongoDB operations. We can also use MongoRepository interface to perform MongoDB operations. The implementation class of MongoRepository uses MongoTemplate bean at run

time. To create

@CONTEXTCONFIGURATION EXAMPLE IN SPRING TEST @ContextConfiguration loads an ApplicationContext for Spring integration test.@ContextConfiguration can load ApplicationContext using XML resource or the JavaConfig annotated with @Configuration.The @ContextConfiguration annotation can also load a component annotated with @Component, @Service, @Repository etc. We can also load classes

annotated with

ANGULAR NGAFTERVIEWINIT() Angular ngAfterViewInit() is the method of AfterViewInit interface.ngAfterViewInit() is a lifecycle hook that is called after Angular has fully initialized a component's views.ngAfterViewInit() is used to handle any additional initialization tasks. Find the AfterViewInit interface code from Angular doc. SPRING PROPERTYPLACEHOLDERCONFIGURER EXAMPLE PropertyPlaceholderConfigurer using Annotation To use PropertyPlaceholderConfigurer using annotation, we will create a static bean of it in java configuration class. To externalize the properties we will use PropertyPlaceholderConfigurer with @PropertySource and @Value. @PropertySource: It loads property file. @Value: It is used for expression-driven dependency injection. SPRING RESTTEMPLATE.GETFOROBJECT() This page will walk through Spring RestTemplate.getForObject() method example. The getForObject method fetches the data for the given response type from the given URI or URL template using HTTP GET method. To fetch data for the given key properties from URL template we can pass Object Varargs and Map to getForObject method. The getForObject returns directly the object of given ANGULAR CUSTOM ASYNC VALIDATOR EXAMPLE Step-1: To install angular-in-memory-web-api, run below command from root folder of the project. npm i angular-in-memory-web-api@0.5.3 --save. Step-2: Create a class implementing InMemoryDbService interface. In our example we are creating an in-memory DB for users. JAVA COMPLETABLEFUTURE SUPPLYASYNC()BAELDUNG COMPLETABLEFUTURECOMPLETABLEFUTURE ALLOF JOINCOMPLETABLEFUTURE PDF On this page we will provide Java CompletableFuture.supplyAsync() example.supplyAsync() is a static method of CompletableFuture introduced in Java 8. The method supplyAsync() completes a task asynchronously running in either ForkJoinPool.commonPool() or given Executor.Find the method signatures. 1. supplyAsync(Supplier supplier) We need to pass a Supplier as a task to RESTTEMPLATE GETFOROBJECT() VS EXCHANGE() RestTemplate.exchange () The exchange method executes the request of any HTTP method and returns ResponseEntity instance. The exchange method can be used for HTTP DELETE, GET, HEAD, OPTIONS, PATCH, POST, PUT, TRACE methods. Using exchange method we can perform CRUD operation i.e. create, read, update and delete data. SPRING WEBFLUX : ANNOTATED CONTROLLERS VS FUNCTIONAL ENDPOINTS Annotated Controllers: 1. In annotation based programming, Spring WebFlux uses same annotations from Spring Web MVC module. 2. Spring Web MVC and Spring WebFlux both supports reactive return types such as

Reactor and RxJava.

ACTIVATE MAVEN PROFILE BY OS 1. : The name of the OS. 2. : The family of OS such as dos, mac, netware, os/2, tandem, unix, windows, win9x, z/os, os/400 . 3. : CPU architecture. 4. : The version of the OS. 5. : Flag to display the detected OS information. 6. : An optional message to the user in case of fail. Find the sample Maven code with a profile that will be

activated by

ANGULAR FORMCONTROL SETVALUE() value: The new value for the control. The options determines how the control propagates changes and emits events when the value changes. The options consists following configurations: onlySelf: If true, each value change will affect only this control and not its parent.Default is false. emitEvent: If true, both the statusChanges and valueChanges observables emit events with the latest SPRING RESTTEMPLATE.GETFOROBJECT() This page will walk through Spring RestTemplate.getForObject() method example. The getForObject method fetches the data for the given response type from the given URI or URL template using HTTP GET method. To fetch data for the given key properties from URL template we can pass Object Varargs and Map to getForObject method. The getForObject returns directly the object of given ANGULAR EMAIL VALIDATION EXAMPLE This page will walk through Angular Email validation example. We can validate email using EmailValidator and PatternValidator directive.EmailValidator provides in-built email validation.PatternValidator uses regex to validate email. So we can use PatternValidator for custom email validation. For EmailValidator we need to use email attribute in controls such as text input and use ANGULAR REQUIRED VALIDATION EXAMPLE This page will walk through Angular required validation example. Angular provides RequiredValidator directive for required validation. In template-driven form, HTML elements use required attribute for required validation and reactive form uses Validators.required with FormControl while creating FormGroup.In reactive form Validators.requiredTrue validates a control for true value and we SPRING RESTTEMPLATE.POSTFOROBJECT() Spring RestTemplate.postForObject () This page will walk through Spring RestTemplate.postForObject () method example. The postForObject method creates a new resource by posting the given object to given url or URI template using HTTP POST method. Request object is the payload to post and we can also use request as HttpEntity that helps to add ANGULAR 2/4 ONCHANGES + SIMPLECHANGES EXAMPLE Angular 2/4 OnChanges + SimpleChanges Example. By Arvind Rai, July 27, 2017. On this page we will provide Angular OnChanges and SimpleChanges example. Angular provides lifecycle hooks for change detection. OnChanges is an interface and has a method declaration i.e ngOnChanges () . In parent-child component, the child component declares @Input JACKSON @JSONPROPERTY AND @JSONALIAS EXAMPLE If we are defining logical property using @JsonProperty, both @JsonProperty and @JsonAlias can be used as following. @JsonProperty("bookCategory") @JsonAlias( {"bkcat", "mybkcat"}) private String category; In the above code, the actual logical property is bookCategory and alias is bkcat and mybkcat. At the time of deserialization either JSON is. SPRING BOOT @CONFIGURATIONPROPERTIES EXAMPLE Spring Boot @ConfigurationProperties is annotation for externalized configuration. To inject property value from a property file to a class, we can add @ConfigurationProperties at a class level with stereotype annotations such as @Component or add @ConfigurationProperties to a @Bean method in a @Configuration class.@ConfigurationProperties is used to bind and validate external

properties

ANGULAR MAP VS FILTER map is a RxJS pipeable operator.map applies a given function to each element emitted by the source Observableand emits the resulting values as an Observable. map is used with pipe which is an instance method of

Observable.

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