摘要：

对象：game与player。game会产生介于0-9之间的随机数字，而三个player对象会猜测数字。

类：

GuessGame.class Player.class GameLauncher.class

程序逻辑：

1.GuessGame这个类带有main（）方法，是应用程序的入口；
2.main（）中会创建出GuessGame对象，并调用他的startGame（）方法；
3.startGame（）方法是游戏的起点。他会创建3个player，然而挑出要猜测随机数字。
它会要求player猜测并检查结果，过程会被列出来。

package game;

public class GuessGame {
	// 用三个实例变量分别表示三个player对象
	Player p1;
	Player p2;
	Player p3;

	public void startGame() {
		// 创建出player对象
		p1 = new Player();
		p2 = new Player();
		p3 = new Player();

		// 声明三个变量保存是否猜中
		int guessp1 = 0;
		int guessp2 = 0;
		int guessp3 = 0;
		// 声明三个变量保存猜测的数字
		boolean p1isRight = false;
		boolean p2isRight = false;
		boolean p3isRight = false;

		// 产生数字谜底
		int targetNumber = (int) (Math.random() * 10);
		System.out.print("i think of a number between 0 and 9...");

		while (true) {
			System.out.print("number to guess is" + targetNumber);

			p1.guess();
			p2.guess();
			p3.guess();

			guessp1 = p1.number;
			System.out.print("player one guess" + guessp1);
			guessp1 = p2.number;
			System.out.print("player one guess" + guessp2);
			guessp1 = p3.number;
			System.out.print("player one guess" + guessp3);
            //检查是否猜中 若没猜中则去设定是否猜中的变量
			if (guessp1 == targetNumber) {
				p1isRight = true;

			}

			if (guessp2 == targetNumber) {
				p2isRight = true;

			}
			if (guessp3 == targetNumber) {
				p3isRight = true;

			}

			if (p1isRight || p2isRight || p3isRight) {
				System.out.println("we have a winner");
				System.out.println("one" + p1isRight);
				System.out.println("two" + p2isRight);
				System.out.println("three" + p3isRight);
				System.out.println("game is over");
				break;// 游戏结束，中止循环

			} else {
				// 都没猜到，所以要继续下去
				System.out.println("players will have to try again");
			} // if else结束
		} // 循环结束

	}// 方法结束

}// 类结束

package game;

public class Player {
	int number =0;
	public void guess(){
		number = (int) (Math.random() * 10);
		System.out.println("i am guess " + number);
		
	}

}

package game;

public class GameLauncher {
	public static void main(String[] args){
		GuessGame game = new GuessGame();
		game.startGame();
	}

}

结果如下