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：
package org.hanqi.pn0120;
public class Fruit {
private String color;
private double price;
private int weight;
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
public int getWeight() {
return weight;
}
public void setWeight(int weight) {
this.weight = weight;
}
}
定义测试类：
package org.hanqi.pn0120;
public class TestFruit {
public static void main(String[] args) {
Fruit apple = new Fruit();
apple.setColor("红色");
apple.setPrice(5.5);
apple.setWeight(10);
System.out.println("苹果的颜色是："+apple.getColor()+" ,价格是："+apple.getPrice()+" ,重量是："+apple.getWeight()+"g");
Fruit banana = new Fruit();
banana.setColor("黄色");
banana.setPrice(4.2);
banana.setWeight(5);
System.out.println("香蕉的颜色是："+banana.getColor()+" ,价格是："+banana.getPrice()+" ,重量是："+banana.getWeight()+"g");
}
}
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：
package org.hanqi.pn0120;
public class Human {
private String name;
private String sex;
private int age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Human(String name, String sex, int age) {
super();
this.name = name;
this.sex = sex;
this.age = age;
}
public void human()
{
System.out.println("姓名："+this.name+" ，性别："+this.sex+" ，年龄："+this.age);
}
}
再定义一个测试类：
package org.hanqi.pn0120;
public class TestHuman {
public static void main(String[] args) {
Human zhangsan = new Human("张三","男",20);
zhangsan.human();
Human lisi = new Human("李四","女",21);
lisi.human();
}
}
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：
package org.hanqi.pn0120;
public class Desk {
private String stuff;
private int number;
private double price;
public String getStuff() {
return stuff;
}
public void setStuff(String stuff) {
this.stuff = stuff;
}
public int getNumber() {
return number;
}
public void setNumber(int number) {
this.number = number;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
}
再定义一个测试类：
package org.hanqi.pn0120;
public class TestDesk {
public static void main(String[] args) {
Desk desk1 = new Desk();
desk1.setStuff("木制");
desk1.setNumber(9527);
desk1.setPrice(666);
System.out.println("第一张桌子的材质是："+desk1.getStuff()+"，编号是："+desk1.getNumber()+"，价格是："+desk1.getPrice());
Desk desk2 = new Desk();
desk2.setStuff("铁制");
desk2.setNumber(27149);
desk2.setPrice(233);
System.out.println("第二张桌子的材质是："+desk2.getStuff()+"，编号是："+desk2.getNumber()+"，价格是："+desk2.getPrice());
}
}
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：
package org.hanqi.pn0120;
public class Pig {
private String color;
private int weight;
private int attack;
private double accuracy;
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public int getWeight() {
return weight;
}
public void setWeight(int weight) {
this.weight = weight;
}
public int getAttack() {
return attack;
}
public void setAttack(int attack) {
this.attack = attack;
}
public double getAccuracy() {
return accuracy;
}
public void setAccuracy(double accuracy) {
this.accuracy = accuracy;
}
public Pig(String color, int weight, int attack, double accuracy) {
super();
this.color = color;
this.weight = weight;
this.attack = attack;
this.accuracy = accuracy;
}
public void pig()
{
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");
}
}
再定义测试类：
package org.hanqi.pn0120;
public class TestPig {
public static void main(String[] args) {
Pig pig = new Pig("白色",5,50,0.8);
pig.pig();
}
}
则运行结果为：