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 num;     String s=(String)JOptionPane.showInputDialog(null,"输入字数","打字成绩判断",                      JOptionPane.PLAIN_MESSAGE,null,null,null);              num=Integer.parseInt(s);            {            if(num>=15&&num<=30)                System.out.println("及格");            if(num>30)              System.out.println("优秀");            if(num<15)              System.out.println("不合格");           }      }   }