java——构造方法重载

 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+"岁" ;
 }
 }

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

java-构造方法重载