JAVA:自定义注解

新建 SxinAnnotation.java

@Target({ElementType.METHOD,ElementType.TYPE})@Retention(RetentionPolicy.RUNTIME)public @interface SxinAnnotation {    String name() default "sxinboss";    int age() default 18;}

新建TestClass.java

public class TestClass {    @SxinAnnotation(name = "sxin",age = 20)    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    private String name;}

try {    Class c = Class.forName("test.TestClass");    Object obj = c.newInstance();    /*     //获取方法名    Method[] mList = c.getMethods();    for (Method m : mList) {      resp.getWriter().write(m.getName()+"<hr />");    }    */    Method m = c.getMethod("getName");    //执行getName方法    write(m.invoke(obj).toString());    //获取Class上的注解。    Annotation[] alist=c.getAnnotations();    for(Annotation a :alist){      write(a.toString());    }} catch (Exception e) {    e.printStackTrace();}