java - System.out.println无法使用数字

我有以下代码：

    import java.util.Scanner;

    import javax.swing.JOptionPane;


    public class weatherCalc {
        public static void main(String args[]) {
            while (true) {
                int division = 8125/1000;
                Scanner in = new Scanner;
                System.out.println("How far, in inches, is it moving on a 50-mile = 0.75 in? (Please use decimels)");
                int weatherInput = in.nextInt();
                System.out.println("How long is the time period in hours? (Please use decimels)");
                int weatherTime = in.nextInt();
                int weatherOutput = weatherInput/division*50/weatherTime;
                System.out.println("The storm is travling at "+ weatherOutput +"MPH.");
            }
        }
    }

您会在“ System.out.println（“中以50英里= 0.75英寸的距离（以英寸为单位）移动多少英寸（请使用分贝）”中的System）”）；”在“ Scanner in = new Scanner;”的结尾加上红色下划线。我不知道为什么，只是想自己开发这个。我可能稍后再做一点工作。如果有人能告诉我原因，那将会有很大帮助。

最佳答案

Scanner in = new Scanner;

应该：

Scanner in = new Scanner(System.in);

关于java - System.out.println无法使用数字，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/15820316/