Classes and objects.

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= "Wang Hongtao";
wangstu.age=18;

wangstu.sex= ' Women ';

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: Protected
Private: Private
Public: Common
Access level

Package Com.demo;

Import Java.util.Scanner;

public class Person {

public String name;

public int age;

/**

* Used to loop receive user input and then determine age

*/

/**

* If classes and attributes have methods that do not add access modifiers, then the default is?

* Default is Public

*/

public void Show () {

Scanner input=new Scanner (system.in);

System.out.println ("Please enter Name:");

Name=input.next ();

1. Cycle

while (!name.equals ("n")) {

System.out.println ("Please enter Age:");

Age=input.nextint ();

2. Judging

if (age>=18&&age<=60) {

System.out.println ("tickets 20 Yuan");

}else{

System.out.println ("Ticket free");

}

System.out.println ("Please enter Name:");

Name=input.next ();

}

SYSTEM.OUT.PRINTLN ("The program is over!" ");

}

}

Classes and objects.