Javaee 方法的构建和调用

主类:
package Szy02;

public class Person {
   String name;
   int age;
   String sex;
   public Person(){

   }
   public Person(String name,int age,String sex){
	   this.name=name;
	   this.age=age;
	   this.sex=sex;
   }
public String getName() {
	return name;
}
public void setName(String name) {
	this.name = name;
}
public int getAge() {
	return age;
}
public void setAge(int age) {
	this.age = age;
}
public String getSex() {
	return sex;
}
public void setSex(String sex) {
	this.sex = sex;
}
}
子类：
package Szy02;

public class Ren extends Person{
    Ren(String name,int age,String sex){
    	super(name,age,sex);
    }
    public void r(){
    	System.out.println("姓名:"+this.name+"\t"+"年龄:"+this.age+"\t"+"性别:"+this.sex);
    }
    public void s(){
    	System.out.println("学java");
    }
    public void sleep(){
    	System.out.println("晚上睡觉");
    }
}
测试类：
package Szy02;

public class Test04 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
        Ren r=new Ren("小王",22,"女");
        r.r();
        r.s();
        r.sleep();
	}

}