第十二节：类的定义

青旅半醒 2021-09-15 23:18 238阅读 0赞

![标题图][1240]

## Java高级编程 ##

#### 掌握 ####

类的定义;  
对象的定义;  
类的构造方法;  
方法的重载

![图片][1240 1]

## 实现步骤: ##

新建Worker类  
为Worker类添加四个属性  
为Worker类添加带参的构造方法，不带参的构造方法不再自动创建  
创建不带参数的构造方法

为Worker类添加getTax()方法  
为Worker类添加getSalary()方法  
在主方法中实例化对象测试并输出姓名，工资和所得税

package hh;
    
    public class Worker {
    private  String ID;
    private String name;
    private double basic;
    private double bonus;
    
    public Worker() {
    name="jack";
    basic=1900;
    bonus=100;
    ID="07160615";
    }
    
    public Worker(String ID, String name, double basic, double bonus) {
    super();
    this.ID = ID;
    this.name = name;
    this.basic = basic;
    this.bonus = bonus;
    }
    
    public String getID() {
    return ID;
    }
    
    public void setID(String iD) {
    ID = iD;
    }
    
    public String getName() {
    return name;
    }
    
    public void setName(String name) {
    this.name = name;
    }
    
    public double getBasic() {
    return basic;
    }
    
    public void setBasic(double basic) {
    this.basic = basic;
    }
    
    public double getBonus() {
    return bonus;
    }
    
    public void setBonus(double bonus) {
    this.bonus = bonus;
    }
    
    public double getTax(){
    if (this.basic+this.bonus<=1600){
    return 0;
        }else{
    return (this.basic+this.bonus-1600)*0.15;
    }
    }
        public double getSalary(){
        if (this.basic+this.bonus<=1600){
    return this.basic+this.bonus;
        }else{
        return this.basic+this.bonus-this.getTax();
        }
        }
        void print(){
        System.out.println("工人姓名:"+this.name);
        System.out.println("所得税："+this.getTax());
        System.out.println("实际工资："+this.getSalary());
       }
    public static void main(String[] args) {
    Worker jack=new Worker("07160615", "jack", 1400, 100);
    jack.print();
    }
    
    }

验结果及分析(运行结果截图)

![图片][1240 2]  
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![图片][1240 3]

[1240]: /images/20210724/596bc78ab9b84f6596a643ca56b8797a.png
[1240 1]: /images/20210724/270b90186bc041fbb76113e0f911211c.png
[1240 2]: /images/20210724/d0683897c6714a2d808c8bf326afdbf9.png
[1240 3]: /images/20210724/416accc0fd6a4d27b196381a5262bc96.png