构造方法

package edu.xcdq;
public class Phone {
    public double width;
    public double high;
    public int weight;
    public String color;

    /*
    * 构造方法：没有返回值 方法的名字和类名需要完全一致
    * 通过构造方法，可以创建对象
    * */
    public  Phone(){
        System.out.println("我被创建了");
    }
    /*
    * 构造方法
    * 含有全部的参数
    * */
   /* public Phone(double kuan,double gao,int zhongliang,String yanse){
        width = kuan;
        high = gao;
        weight = zhongliang;
        color = yanse;
    }*/
    public Phone (double width, double high,int weight,String color){
        this.width =width;
        this.high = high;
        this.weight = weight;
        this.color =color;
    }
        /*
            构造函数
            含有部分参数
        */
        public Phone (double kuan ,double gao , int zhongliang){
            width = kuan;
            high = gao;
            weight = zhongliang;
        }
        /*
        * 方法的重载
        *   要求 ： 1. 方法的名字相同 2. 参数不同
        *                        2.1 参数类型不同
        *                        2.2 参数的个数不同
        *                        2.3 参数类型的调用顺序不同
        * */
    public void kaiji(){
        System.out.println("手机正在开机");
    }
    public void kaiji(int i,double j){

    }
    public void kaiji (double j , int i){

    }
    public void kaij (int i,int j,int k){

    }
    /*private int kaiji(){

    }*/
    public void guanji(){
        System.out.println("手机正在关机");
    }
    public String toString() {
        return "["+this.width + this.high +this.weight + this.color+ "]";

    }
}