Use java to write grade grading tools

 Topic: Use Java to write a grade grading tool. Requirements: 100~90 minutes output A, 90~80 minutes output B, 80~70 minutes output C, 70~60 minutes output D, 60 minutes or less output E.

import java.util.Scanner;

public class GradeClassification {

	public static void main(String[] args) {
		int y;
		char x;
		Scanner num = new Scanner(System.in);
		System.out.println("请输入判断的成绩");
		y = num.nextInt();
		if (y >= 90) {
			x = 'A';
		} else if (y >= 80) {
			x = 'B';
		} else if (y >= 70) {
			x = 'C';
		} else if (y >= 60) {
			x = 'D';
		} else {
			x = 'E';
		}
		System.out.println(y + "分，等级为：" + x + "！");
	}
}