1.自定义的annotation

package com.qimh.annotion;import java.lang.annotation.Retention;import java.lang.annotation.RetentionPolicy;@Retention(RetentionPolicy.RUNTIME)public @interface MyAnnotation {	String key();	String value();}

2.测试自定义的MyAnnotation 

package com.qimh.annotion;@MyAnnotation(key="11",value="22")public class TestAnnotion {		public static void main(String[] args) {//		TestAnnotion testAnnotion = new TestAnnotion();//		System.out.println(TestAnnotion.class);		MyAnnotation myAnnotation = TestAnnotion.class.getAnnotation(MyAnnotation.class);		System.out.println("key="+myAnnotation.key()+",value="+myAnnotation.value());	}}

参考链接：