回调函数 实例

package callback;


class Boss{
	public void call(Worker worker){
		String detail="finish this";
		worker.work(detail);
	}
}


interface Worker{
	abstract void work(String str);
}

public class Test {

	public static void main(String[] args) {
		Boss boss=new Boss();
		boss.call(
				new Worker(){
					public void work(String str){
						System.out.println("I have to "+str);
					}
				}
		);
	}

}