匿名子类示例

/**
 * @auto dh
 * @create 2020-04-29-9:25
 */
abstract class Id009{
    public Id009(){
    }
    abstract  void test();
}
public class Test009 {
    public static void main(String[] args) {
        Id009 id=new Id009(){
            @Override
            void test() {
                System.out.println("hello world");
            }
        };
        id.test();
    }
}