第十二節：類的定義

Java高級編程

掌握

類的定義;
對象的定義;
類的構造方法;
方法的重載

實現步驟:

新建Worker類
為Worker類添加四個屬性
為Worker類添加帶參的構造方法，不帶參的構造方法不再自動創建
創建不帶參數的構造方法

為Worker類添加getTax()方法
為Worker類添加getSalary()方法
在主方法中實例化對象測試並輸出姓名，工資和所得稅

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("所得稅："+this.getTax());
    System.out.println("實際工資："+this.getSalary());
   }
public static void main(String[] args) {
Worker jack=new Worker("07160615", "jack", 1400, 100);
jack.print();
}

}

驗結果及分析(運行結果截圖)

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