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ramram43210ramram43210
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‎BasicJava/ReflectionDemo_access_method_annotation/ReflectionDemo/.classpath‎

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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>

‎BasicJava/ReflectionDemo_access_method_annotation/ReflectionDemo/.project‎

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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>ReflectionDemo</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.jdt.core.javanature</nature>
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</natures>
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</projectDescription>

‎BasicJava/ReflectionDemo_access_method_annotation/ReflectionDemo/.settings/org.eclipse.jdt.core.prefs‎

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eclipse.preferences.version=1
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org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
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org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
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org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
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org.eclipse.jdt.core.compiler.compliance=1.8
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org.eclipse.jdt.core.compiler.debug.lineNumber=generate
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org.eclipse.jdt.core.compiler.debug.localVariable=generate
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org.eclipse.jdt.core.compiler.debug.sourceFile=generate
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org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
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org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
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org.eclipse.jdt.core.compiler.source=1.8

‎BasicJava/ReflectionDemo_access_method_annotation/ReflectionDemo/bin/Display.class‎

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‎BasicJava/ReflectionDemo_access_method_annotation/ReflectionDemo/bin/MyAnnotation.class‎

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‎BasicJava/ReflectionDemo_access_method_annotation/ReflectionDemo/bin/ReflectionDemo1.class‎

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‎BasicJava/ReflectionDemo_access_method_annotation/ReflectionDemo/bin/ReflectionDemo2.class‎

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‎BasicJava/ReflectionDemo_access_method_annotation/ReflectionDemo/src/Display.java‎

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import java.lang.annotation.ElementType;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.lang.annotation.Target;
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@Retention(RetentionPolicy.RUNTIME)
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@Target(ElementType.METHOD)
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@interface MyAnnotation
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{
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public String name();
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public String value();
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}
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public class Display
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{
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@MyAnnotation(name = "Country", value = "India")
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public void doSomething()
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{
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}
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}

‎BasicJava/ReflectionDemo_access_method_annotation/ReflectionDemo/src/ReflectionDemo1.java‎

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import java.lang.annotation.Annotation;
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import java.lang.reflect.Method;
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/**
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* We can access the annotations of a class,method or field at runtime.
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*
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* Method Annotations Example:
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*/
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public class ReflectionDemo1
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{
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public static void main(String[] args)
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{
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try
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{
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Class<Display> classObj = Display.class;
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Method method = classObj.getMethod("doSomething", null);
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/*
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* Returns:annotations present on this element *
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*/
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Annotation[] annotationArray = method.getAnnotations();
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for (Annotation annotation : annotationArray)
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{
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if(annotation instanceof MyAnnotation)
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{
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MyAnnotation myAnnotation = (MyAnnotation)annotation;
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System.out.println("name: "+myAnnotation.name());
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System.out.println("value: "+myAnnotation.value());
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}
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}
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}
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catch (NoSuchMethodException | SecurityException e)
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{
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e.printStackTrace();
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}
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}
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}

‎BasicJava/ReflectionDemo_access_method_annotation/ReflectionDemo/src/ReflectionDemo2.java‎

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import java.lang.reflect.Method;
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/**
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* We can access the annotations of a class,method or field at
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* runtime.
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*
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* Method Annotations Example:
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*/
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public class ReflectionDemo2
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{
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public static void main(String[] args)
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{
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try
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{
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Class<Display> classObj = Display.class;
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Method method = classObj.getMethod("doSomething", null);
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/*
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* Returns: this element's annotation for the specified
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* annotation type if present on this element, else null
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*
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*/
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MyAnnotation myAnnotation = method.getAnnotation(MyAnnotation.class);
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System.out.println("name: " + myAnnotation.name());
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System.out.println("value: " + myAnnotation.value());
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}
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catch (NoSuchMethodException | SecurityException e)
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{
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e.printStackTrace();
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}
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}
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}

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