testper2.java

用java编写的一些初级代码

class Person2
{
    private int age ;
    private String name ;
    public void setName(String name ){
	this.name=name;
    }
    public String getName(){
	return this.name;
    }
    public void setAge(int age){
	if (age<0||age >130)
	    return ;
	this.age=age;
    }
    public int getAge(){
	return this.age;
    }
    public Person2()
    {
	System.out.println("call con1");
    }
    public Person2(String name)
    {
	this.name=name;
	System.out.println("call con2");
	System.out.println("name is "+this.getName());
    }
    public Person2(String name,int age)
    {
	this.name=name;
	this.setAge(age);
	System.out.println("call con3");
	System.out.println("name is "+this.getName());
	System.out.println("age is "+this.getAge());
    }
    public void shout()
    {
	System.out.println("not at all");
    }
}
public class Testper2
{
    public static void main (String [] args)
    {
	Person2 p1= new Person2();
	p1.shout();
	Person2 p2= new Person2("dog");
	p2.shout();
	Person2 p3= new Person2("cat",2);
	p3.shout();
    }
}