面向对象程序设计与面向过程程序设计的区别？

面向过程就是分析出解决问题所需要的步骤，然后用函数把这些步骤一步一步实现，使用的时候一个一个依次调用就可以了。

面向对象是把构成问题事务分解成各个对象，建立对象的目的不是为了完成一个步骤，而是为了描叙某个事物在整个解决问题的步骤中的行为。

例子：猜数字游戏

class GuessGame{

    Player p1;

    Player p2;

    Player p3;//用3个实例变量分别表示3个player对象

    public void startGame() {

    p1=new Player();

    p2=new Player();

    p3=new Player();//创建出player对象

    int guessp1=0;

    int guessp2=0;

    int guessp3=0;//声明3个变量来保存是否猜中

    boolean p1isRight=false;

    boolean p2isRight=false;

    boolean p3isRight=false;//声明3个变量来保存猜测的数字

    int targetNumber = (int)(Math.random()*10);

    System.out.println("I'm thinking of a number between 0 and 9...");//产生谜底数字

    while(true) {

        System.out.println("Number to guess is "+targetNumber);

        p1.guess();

        p2.guess();

        p3.guess();//调用Player的guess()方法

        guessp1=p1.number;

        System.out.println("Player one guessed "+guessp1);

        guessp2=p2.number;

        System.out.println("Player one guessed "+guessp2);

        guessp3=p3.number;   

        System.out.println("Player one guessed "+guessp3);//取得每个Player所猜测的数字并将它列出

        if(guessp1==targetNumber) {

            p1isRight = true;

        }

        if(guessp2==targetNumber) {

            p2isRight = true;

        }

        if(guessp3==targetNumber) {

            p3isRight = true;

        }//检查是否猜中，若是猜中则去设定是否猜中的变量

        if(p1isRight||p2isRight||p3isRight) {//如果有一或多个猜中

            System.out.println("We have a winner!");

            System.out.println("Player one got it right? "+p1isRight);

            System.out.println("Player two got it right? "+p2isRight);

            System.out.println("Player three got it right? "+p3isRight);

            System.out.println("Game is over");

            break;

            }else {//不然的话就重复循环继续猜下去

                //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

class Player{

    int number = 0;

    public void guess() {

        number = (int)(Math.random()*10);

        System.out.println("I'm guessing "+number);

    }

}

public class hm{

    public static void main(String[] args) {

        GuessGame game = new GuessGame();

        game.startGame();

    }

}