Java8新特性 重复注解与类型注解

 

import java.lang.annotation.Repeatable;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.*;

@Repeatable(MyAnnotations.class)
@Target({TYPE, FIELD, METHOD, PARAMETER, CONSTRUCTOR, LOCAL_VARIABLE,TYPE_PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
public @interface MyAnnotation {

    String value();

}

 

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.*;

@Target({TYPE, FIELD, METHOD, PARAMETER, CONSTRUCTOR, LOCAL_VARIABLE,TYPE_PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
public @interface MyAnnotations {

    MyAnnotation[] value();
}

 

public class TestAnnotation {


    @MyAnnotation("hello")
    @MyAnnotation("world")
    public void test() {

    }

}