this关键字的构造方法的使用

 package com.wh.Object3;
 
 public class this_Demo {
     private String name;
     private double price;
     private int num;
 
     public String getName() {
         return name;
     }
 
     public void setName(String name) {
         this.name = name;
     }
 
     public double getPrice() {
         return price;
     }
 
     public void setPrice(double price) {
         this.price = price;
     }
 
     public int getNum() {
         return num;
     }
 
     public void setNum(int num) {
         this.num = num;
     }
 
     public this_Demo() {
         //this关键字的构造方法的使用
         this("可乐", 2.5, 1001);
     }
 
     public this_Demo(String name, double price, int num) {
         this.name = name;
         this.price = price;
         this.num = num;
     }
 
     public static void main(String[] args) {
         /*
          * this("","",""); 代表一个构造方法
          */
         this_Demo th=new this_Demo();
         System.out.println(th.getName());
         System.out.println(th.getPrice());
         System.out.println(th.getNum());
     }
 }