构造方法重载和调用
public class Java9_10
{
public static void main(String args[])
{
Dong don=new Dong();
Dong dong=new Dong("lucy",23);
}
}
class Dong
{
String name;
int age;
public Dong()
{
this.name="john";
this.age=25;
System.out.println("My name is :"+this.name+",and I am "+this.age+"years old");
}
public Dong(String name,int age)
{
this.name=name;
this.age=age;
System.out.println("My name is :"+this.name+",and I am "+this.age+"years old");
}
}
还没有评论,来说两句吧...