java——構造方法重載

class Person
{
private String name ;
private int age ;
public Person()
{
}
public Person(String n,int a)
{
name = n;
age = a;
System.out.println(name+age) ;
}
public String talk()
{
return "我是： "+name+"，今年： "+age+"歲" ;
}
}

public class Test
{
public static void main(String[] args)
{
Person p = new Person() ;
System.out.println(p.talk()) ;