public class Phone {
public double width;
public double high;
public double weight;
public Stringcolor;
/**
* 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
含有全部的参数*/
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
* 2.1参数的类型不同
* 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,int j ){
}
public void kaiji(double j,int i){
}
public void kaiji(int i,int j,int k){
}
/*private void kaiji(){
}*/
public void guanij(){
System.out.println("手机正在关机");
}
public StringtoSting(){
System.out.println();
return "[" +this.width+this.high+this.weight+this.color +"]";
}
}
测试类
public class Demo01 {
public static void main(String[] args) {
//new申请内存
Phone xiaomi11=new Phone();
xiaomi11.width=15;
xiaomi11.high=155;
xiaomi11.weight=366;
xiaomi11.color="香槟银";
Phone xiaomi11tra=new Phone(16,156,366);
Phone iphone=new Phone(17,157,357);
System.out.println(xiaomi11);
System.out.println(xiaomi11tra);
System.out.println(iphone);
}
}
