使用do-while循环测试输入是否为Integer且大于（两个条件） - Java [英] Testing if an input is Integer and larger than (two conditions) with do-while loop - Java

问题描述

我需要用户输入为整数且大于10。

I need input from a user to be integer and larger than 10.

这是我的代码。

import java.util.*; //program uses class Scanner

public class Tests {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        System.out.println("Enter an Integer");

        int weight;
            do {
                while (!input.hasNextInt()) {
                    System.out.println("Please enter an integer!");
                    input.next(); // this is important!
                }
                System.out.println("Enter an Integer >= 10");
                weight = input.nextInt();
            } while (weight < 10);

        System.out.println("OK");

    }

}

我的预期输出如果重量是整数，则打印OK。
但是我的实际输出是

My expected output will be to if the weight is integer to print "OK". But my actual output is

Enter an Integer
20
Enter an Integer >= 10
OK

我无法弄清楚如何摆脱输入整数条件满足时> = 10。

I cannot figure out how to get rid of the "Enter an Integer >= 10" when conditions satisfied.

推荐答案

如果输入不满足条件，则只打印消息。

Only print the message if the input does not satisfy the condition.

do {
    while (!input.hasNextInt()) {
        System.out.println("Please enter an integer!");
        input.next(); // this is important!
    }
    weight = input.nextInt();
    if ( weight < 10 ) {
        System.out.println("Enter an Integer >= 10");
    }
} while (weight < 10);

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