grade.java

常用的JAVA程序

import java.io.*;
public class Grade {
public static void main(String[] args)throws IOException {
	BufferedReader buf;
	String str;
	int score;

	buf=new BufferedReader(new InputStreamReader(System.in));
	System.out.print("Input a string:");
	str=buf.readLine();
	score=Integer.parseInt(str);
	System.out.println(translate(score));}
static char translate(int score){
	int t;
	char s;
	t=score/10;
	switch(t)
	{case 10:
	case 9:s='A';break;
	case 8:
	case 7:s='B';break;
	case 6:s='C';break;
	default:s='D';break;}
	return s;}}