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1，定义一个水果类(fruit),水果类中的有
【属性】：颜色(color)、价格(price)、重量(weigth),
再定义一个<测试类>,
创建一个苹果(apple)的对象, 颜色是"红色",价格是5.5,重量10g。
然后再创建一个香蕉(banana)的对象,颜色是"黄色",价格是4.2,重量5g。
最后输出：
苹果的颜色、价格、重量、
香蕉的颜色、价格、重量、
编写代码如下：
定义水果类：
1 package org.hanqi.pn0120; 2 3 public class Fruit { 4 5 private String color; 6 private double price; 7 private int weight; 8 public String getColor() { 9 return color; 10 } 11 public void setColor(String color) { 12 this.color = color; 13 } 14 public double getPrice() { 15 return price; 16 } 17 public void setPrice(double price) { 18 this.price = price; 19 } 20 public int getWeight() { 21 return weight; 22 } 23 public void setWeight(int weight) { 24 this.weight = weight; 25 } 26 }
定义测试类：
1 package org.hanqi.pn0120; 2 3 public class TestFruit { 4 5 public static void main(String[] args) { 6 7 Fruit apple = new Fruit(); 8 apple.setColor("红色"); 9 apple.setPrice(5.5); 10 apple.setWeight(10); 11 System.out.println("苹果的颜色是："+apple.getColor()+" ,价格是："+apple.getPrice()+" ,重量是："+apple.getWeight()+"g"); 12 Fruit banana = new Fruit(); 13 banana.setColor("黄色"); 14 banana.setPrice(4.2); 15 banana.setWeight(5); 16 System.out.println("香蕉的颜色是："+banana.getColor()+" ,价格是："+banana.getPrice()+" ,重量是："+banana.getWeight()+"g"); 17 } 18 }
则运行结果为：
2、定义一个人类,人类中有以下属性:姓名(name),性别(sex),年龄(age),再定义一个测试类
创建一个"张三"的对象
姓名：张三
性别：男
年龄：20
创建一个"李四"的对象
姓名：李四
性别：女
年龄：21
最后输出张三与李四的信息
编写代码如下：
定义一个人类：
1 package org.hanqi.pn0120; 2 3 public class Human { 4 5 private String name; 6 private String sex; 7 private int age; 8 public String getName() { 9 return name; 10 } 11 public void setName(String name) { 12 this.name = name; 13 } 14 public String getSex() { 15 return sex; 16 } 17 public void setSex(String sex) { 18 this.sex = sex; 19 } 20 public int getAge() { 21 return age; 22 } 23 public void setAge(int age) { 24 this.age = age; 25 } 26 public Human(String name, String sex, int age) { 27 super(); 28 this.name = name; 29 this.sex = sex; 30 this.age = age; 31 } 32 public void human() 33 { 34 System.out.println("姓名："+this.name+" ，性别："+this.sex+" ，年龄："+this.age); 35 } 36 }
再定义一个测试类：
1 package org.hanqi.pn0120; 2 3 public class TestHuman { 4 5 public static void main(String[] args) { 6 7 Human zhangsan = new Human("张三","男",20); 8 zhangsan.human(); 9 Human lisi = new Human("李四","女",21); 10 lisi.human(); 11 } 12 }
则运行结果为：
3、定义一个桌子类,属性有：材料、编号、价格,再定义一个测试类,在测试类中分别创建两张桌子,分别给他们赋值，最后输出
编写代码如下：
定义一个桌子类：
1 package org.hanqi.pn0120; 2 3 public class Desk { 4 5 private String stuff; 6 private int number; 7 private double price; 8 public String getStuff() { 9 return stuff; 10 } 11 public void setStuff(String stuff) { 12 this.stuff = stuff; 13 } 14 public int getNumber() { 15 return number; 16 } 17 public void setNumber(int number) { 18 this.number = number; 19 } 20 public double getPrice() { 21 return price; 22 } 23 public void setPrice(double price) { 24 this.price = price; 25 } 26 }
再定义一个测试类：
1 package org.hanqi.pn0120; 2 3 public class TestDesk { 4 5 public static void main(String[] args) { 6 7 Desk desk1 = new Desk(); 8 desk1.setStuff("木制"); 9 desk1.setNumber(9527); 10 desk1.setPrice(666); 11 System.out.println("第一张桌子的材质是："+desk1.getStuff()+"，编号是："+desk1.getNumber()+"，价格是："+desk1.getPrice()); 12 Desk desk2 = new Desk(); 13 desk2.setStuff("铁制"); 14 desk2.setNumber(27149); 15 desk2.setPrice(233); 16 System.out.println("第二张桌子的材质是："+desk2.getStuff()+"，编号是："+desk2.getNumber()+"，价格是："+desk2.getPrice()); 17 } 18 }
运行结果为：
4、写一个传奇游戏中的猪类，类中有属性：颜色(color)、重量(weight)、攻击力(attack)、准确度(accuracy)。再写一个测试类，生成一个猪的对象，将此猪的颜色值为“白色(white)”，重量为5，攻击力为50点，准确度为0.8。要求输出此猪的信息格式为：一只白色的猪，重量5，攻击为50点血，准确度为0.8，我好怕怕呀
编写代码如下：
定义一个猪类：
1 package org.hanqi.pn0120; 2 3 public class Pig { 4 5 private String color; 6 private int weight; 7 private int attack; 8 private double accuracy; 9 public String getColor() { 10 return color; 11 } 12 public void setColor(String color) { 13 this.color = color; 14 } 15 public int getWeight() { 16 return weight; 17 } 18 public void setWeight(int weight) { 19 this.weight = weight; 20 } 21 public int getAttack() { 22 return attack; 23 } 24 public void setAttack(int attack) { 25 this.attack = attack; 26 } 27 public double getAccuracy() { 28 return accuracy; 29 } 30 public void setAccuracy(double accuracy) { 31 this.accuracy = accuracy; 32 } 33 public Pig(String color, int weight, int attack, double accuracy) { 34 super(); 35 this.color = color; 36 this.weight = weight; 37 this.attack = attack; 38 this.accuracy = accuracy; 39 } 40 public void pig() 41 { 42 System.out.println("一只"+this.color+"的猪，重量"+this.weight+"，攻击力为"+this.attack+"点血，准确度为"+this.accuracy+",我好怕怕呀"); 43 } 44 }
再定义测试类：
1 package org.hanqi.pn0120; 2 3 public class TestPig { 4 5 public static void main(String[] args) { 6 7 Pig pig = new Pig("白色",5,50,0.8); 8 pig.pig(); 9 } 10 }
则运行结果为：
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原文地址：http://www.cnblogs.com/hanazawalove/p/5251642.html
