一、源代码
//用户输入一个整数,判断其成绩为什么档次
//Qi Ming Liu,November 13,2015
package Demo;
import javax.swing.JOptionPane;
public class TestScore {
public static void main(String[] args) {
try
{
String str=JOptionPane.showInputDialog("请输入一个整数:");
int score=Integer.parseInt(str);
String str1=getLevel(score);
JOptionPane.showMessageDialog(null,str1,"成绩结果",JOptionPane.INFORMATION_MESSAGE);
}catch(NumberFormatException e){
System.out.println("对不起！你输入有误，请重新输入!");
}
}
public static String getLevel(int score){
if (score>=0&&score<60)
return "不及格";
else if (score>=60&&score<70)
return "及格";
else if (score>=70&&score<80)
return "中";
else if (score>=80&&score<90)
return "良";
else if(score>=90&&score<=100)
return "优";
else
return "输入的数超出范围";
}
}
二、结果截图验证
