匿名内部类

public class AnmInnerClass {

    /**
     * @param args
     * 匿名类，也叫匿名内部类，是对原类的集成并且直接实例化的对象
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Foo foo=new Foo(){
            public int getA(){
                System.out.println("调用了getA()");
                return super.getA();
            }
        };
        System.out.println(foo.getA());
        
        
    }
}    
    class Foo{
        int a;
        public int getA(){
            return a;
        }
    }