用OO思想编写（初级）

大学生小明，是一名党员，需要定期参加党员活动。
import java.util.*;

class judgeDangyuan{
private String name;
private String isDangyuan;

public judgeDangyuan(String name,String isDangyuan)
{
this.name=name;
this.isDangyuan=isDangyuan;
}

public String isDangyuan() {
return isDangyuan;
}

public String getIsDangyuan() {
return isDangyuan;
}

public void setIsDangyuan(String isDangyuan) {
this.isDangyuan = isDangyuan;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public void joinActivities()
{
System.out.println("是一名党员，需要定期参加党员活动 。");
}

public void notJoinActivities()
{
System.out.println("不是一名党员，不需要参加党员活动 。");
}
}

public class Student {

public static void main(String args[])
{
judgeDangyuan stu=new judgeDangyuan(" ","true");
Scanner cin=new Scanner(System.in);
String name=cin.next();
String isDangyuan=cin.next();
stu.setName(name);
stu.setIsDangyuan(isDangyuan);
System.out.println(name);

if(isDangyuan.equals("true"))
{
stu.joinActivities();
}
else
stu.notJoinActivities();
}
}