package com.java1234.chap03.sec04;
public class People {
//string类的默认值是null
private String name;
//int类属性默认值是0；
private int age;
/*
* 默认构造函数*/
People() {
// TODO Auto-generated constructor stub
System.out.println("默认构造方法！"
);
}
/*
* 有参数的构造方法
*/
People(String name2,int age2){
name=
name2;
age=
age2;
System.out.println("有参数的构造方法！"
);
}
public void say(){
System.out.println("我叫："+name+"，我今年："+
age);
}
public static void main(String[] args) {
People people=
new People();
People people2=
new People("张三",23
);
people.say();
people2.say();
}
}执行结果：
默认构造方法！有参数的构造方法！我叫：null，我今年：0我叫：张三，我今年：23
转载于:https://www.cnblogs.com/zhanghongqiang/p/4339564.html
