package com.demo;
public class Student {
String name;
char sex;
int age;
}
package com.demo;
public class StudentTest {
public static void main(String[] args) {
Student wangstu=new Student();
wangstu.name="王洪涛";
wangstu.age=18;
wangstu.sex='女';
wangstu.showStudent();
}
}
package com.demo;
import java.util.Scanner;
public class PersonTest {
public static void main(String[] args) {
Person person=new Person();
person.show();
}
}
protected:受保护的
private：私有的
public：公共的
访问级别
package com.demo;
import java.util.Scanner;
public class Person {
public String name;
public int age;
/**
* 用来循环接收用户输入，然后判断年龄
*/
/**
* 如果类和属性还有方法不添加访问修饰符，那么默认是？
* 默认是public
*/
public void show(){
Scanner input=new Scanner(System.in);
System.out.println("请输入姓名：");
name=input.next();
//1.循环
while(!name.equals("n")){
System.out.println("请输入年龄：");
age=input.nextInt();
//2.判断
if(age>=18&&age<=60){
System.out.println("门票20元");
}else{
System.out.println("门票免费");
}
System.out.println("请输入姓名：");
name=input.next();
}
System.out.println("程序结束！");
}
}