Java使用InputMismatchException尝试/捕获将创建无限循环

next()

hasNextInt()

       catch (Exception e) { System.out.println("Error!");input.next();// Move to next other wise exception        }

在读取整数值之前，你需要确保扫描仪具有一个。而且你不需要像这样的异常处理。

    Scanner scanner = new Scanner(System.in);    int n1 = 0, n2 = 0;    boolean bError = true;    while (bError) {        if (scanner.hasNextInt()) n1 = scanner.nextInt();        else { scanner.next(); continue;        }        if (scanner.hasNextInt()) n2 = scanner.nextInt();        else { scanner.next(); continue;        }        bError = false;    }    System.out.println(n1);    System.out.println(n2);