第4周作业-打字成绩判断程序

import javax.swing.*;

public class TouchType {
public static void main (String args[]){
int x;
String s=(String)JOptionPane.showInputDialog(null,"请输入成绩","盲打测试分数判断",
JOptionPane.PLAIN_MESSAGE,null,null,null);
x=Integer.parseInt(s);
{ if(x>=15&&x<=30)
System.out.println("合格");
}
if(x>30)
System.out.println("优秀");
if(x<15)
System.out.println("不合格");
}

}