不知道这个合不合适
package com.kidd.baiduzhidao;
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int i = 0;
boolean next = false;
try {
i = getNumber(scanner);
next = true;
} catch (Exception e) {
System.out.println("您输入的不是1~3的数字,抛出了异常.");
e.printStackTrace();
}
if (next) {
switch (i) {
case 1: {
System.out.println("您输入的数字是" + i + ",代表的课程是语文.");
break;
}
case 2: {
System.out.println("您输入的数字是" + i + ",代表的课程是数学.");
break;
}
case 3: {
System.out.println("您输入的数字是" + i + ",代表的课程是英语.");
break;
}
default:
break;
}
}
System.out.println("欢迎提出建议");
}
public static int getNumber(Scanner scanner) throws Exception {
boolean next = false;
int i = 0;
System.out.print("输入1~3之间任一个数字:");
while (!next) {
try {
i = Integer.parseInt(scanner.next());
next = true;
} catch (NumberFormatException e) {
System.out.println("格式不正确,仅能输入数字.");
}
}
if (i < 1 || i > 3) {
throw new Exception();
}
return i;
}
}