package com.sec01;
public class Demo3_2 {
/*static int i=1;
static {
//该静态区域块，只执行一次
i++;
}
public Demo3_2(){
i++;
}*/
public static void main(String[] args) {
// Demo3_2 t1=new Demo3_2();
// System.out.println(t1.i);
// Demo3_2 t2=new Demo3_2();
// System.out.println(t2.i);
//创建一个学生
/**Stu stu1=new Stu(29,"aa",240);
Stu stu2=new Stu(39,"bb",340);
System.out.println(stu2.getTotalFee());*/
Clerk clerk1=new Clerk("小花",24,4567.6f);
//她的薪水是没有办法访问的，由于封装了除非是通过成员方法
System.out.println("名字是"+clerk1.name+"她的薪水是"+clerk1.getSal());
}
}
//职员
class Clerk{
public String name;
//private 私有的
private int age;
private float salary;
public Clerk (String name,int age,float sal){
this.name=name;
this.age=age;
this.salary=sal;
}
//通过一个成员方法去控制和访问私有的属性
public float getSal(){
return this.salary;
}
}
//学生
class Stu{
int age;
String name;
int fee;
static int totalFee;
public Stu(int age,String name,int fee){
this.age=age;
this.name=name;
totalFee+=fee;
}
//返回总学费[这是一个类方法（静态方法）]
//java中规则：类变量原则上用类方法去访问和操作
public int getTotalFee(){
age++;
return totalFee;
}
}
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