15.5 匿名内部类

泛型可以用于匿名内部类

package com.cnsuning.src;

public class Main {
	public static void main(String[] args) {
		Generator<Robot> g = Robot.generator;
		for(int i=0;i<5;i++){
			System.out.println(g.next());
		}
	}
}

interface Generator<T>{
	public T next();
}

class Robot{
	private static int count=0;
	private int id=count++;
	public String toString(){
		return "Robot "+id;
	}
	public static Generator<Robot> generator = new Generator<Robot>(){

		@Override
		public Robot next() {
			// TODO Auto-generated method stub
			return new Robot();
		}
		
	};
	private Robot(){
		
	}
}

运行结果:

Robot 0
Robot 1
Robot 2
Robot 3
Robot 4