学习日记day8-面向对象实例

1.文字版格斗游戏

JavaBean类 package Game; import java.util.Random; public class Role { private String name; private int blood; public Role(){ } public Role(String name, int blood){ this.name = name; this.blood = blood; } public String getName(){ return name; } public void setName(String name){ this.name = name; } public int getBlood(){ return blood; } public void setBlood(int blood){ this.blood = blood; } //定义一个方法,用于攻击别人 public void attack(Role role){ //计算造成的伤害 Random r = new Random(); int hurt = r.nextInt(20) + 1; //修改挨揍的人血量 int remainBlood = role.getBlood() - hurt; remainBlood = remainBlood < 0 ? 0 : remainBlood; role.setBlood(remainBlood); System.out.println(this.getName() + "打了" + role.getName() + "一下, " + "造成了" + hurt +"点伤害, " + role.getName() + "还剩下" + remainBlood + "点血"); } }

测试类 package Game; public class GameTest { public static void main(String[] args) { //创建两个角色 Role r1 = new Role("C", 100); Role r2 = new Role("D", 100); //开始格斗 while(true){ //r1开始攻击r2 r1.attack(r2); if(r2.getBlood() == 0){ System.out.println(r1.getName()+" K.O了" + r2.getName()); break; } r2.attack(r1); if(r1.getBlood() == 0){ System.out.println(r2.getName()+" K.O了" + r1.getName()); break; } } } }

2.对象数组练习

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JavaBean类 package game2; public class Goods { private String id; private String name; private double price; private int count; public Goods(){ } public Goods(String id, String name, double price, int count){ this.id = id; this.name = name; this.price = price; this.count = count; } public void setId(String id){ this.id = id; } public String getId(){ return id; } public void setName(String name){ this.name = name; } public String getName(){ return name; } public void setPrice(double price){ this.price = price; } public double getPrice(){ return price; } public void setCount(int count){ this.count = count; } public int getCount(){ return count; } }

注:这里不能直接打印数组,打出来是数组元素的地址值,必须用定义的Goods重新定义数据接收数组内容

并不是二维数组,而是数组中存放的是地址,该地址存放具体的信息

测试类 package game2; public class GoodsTest { public static void main(String[] args) { //创建数组 Goods[] arr = new Goods[3]; //创建三个对象 Goods g1 = new Goods("001", "华为P40" , 5999.0, 100); Goods g2 = new Goods("002", "保温杯" , 227.0, 50); Goods g3 = new Goods("003", "枸杞" , 12.7, 70); //把商品添加到数组中 arr[0] = g1; arr[1] = g2; arr[2] = g3; //遍历 for (int i = 0; i < arr.length; i++) { Goods goods = arr[i]; // 注:这里不能直接打印数组,打出来是数组元素的地址值 // 必须用定义的Goods重新定义数据接收数组内容 System.out.println(goods.getId() + ", " + goods.getName() + ", " + goods.getPrice() + ", " + goods.getCount()); } } }

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