cj.java.bak

class NumberListener implements ActionListener{ public void actionPerformed(ActionEvent e){ if (

import java.io.*;
public class Cj
{
	public static void main(String args[])
	{
		int n=0;
		System.out.print("请输入考试成绩:");
		try
		{
			BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
			n=Integer.parseInt(br.readLine());
		}catch(IOException ex){}
		{if(n>100||n<0)
		
			System.out.println("错误！考分必须在1-100之间.");
		else
			{if (n>90)
				System.out.println("你的等级为：A ");
				break;
			 else if (n>80)
				System.out.println("你的等级为：B ");
				break;
			 else if (n>70)
				System.out.println("你的等级为：C ");
				break;
			else if(n>60)
				System.out.println("你的等级为：D ");
				break;
			else if (n<60)
			System.out.println("你的等级为：D ");
				break;
			
			}
		}
}