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我试图捕捉最终起作用的异常,但现在我需要弄清楚如何让它循环。另外,我怎样才能让用户输入(int select)到循环之外?我可以尝试创建一个新功能,这可能会奏效。

do {
    System.out.print("How many integers shall we compare? (Enter a positive integer): ");
    try {
        select = intFind.nextInt();
    } catch (InputMismatchException e) {
        // Display the following text in the event of an invalid input
        System.out.println("Invalid input!");
        intFind.nextLine();
    }
} while (select < 0);

然后

do
            {
                System.out.print("How many integers shall we compare? (Enter a positive integer): ");
                try {
                    b = Get();
                }
                catch (InputMismatchException e) {
                    // Display the following text in the event of an invalid input
                    System.out.println("Invalid input!");

                    intFind.nextLine();
                } copySel = b;  
            }while(select < 0);

static int Get()
    {
        Scanner intFind = new Scanner(System.in);
        int select;
        select = intFind.nextInt();
        return select;
    }
4

1 回答 1

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要使其循环,请确保将select其初始化为小于 0 的值。但最好有一个条件select < 2,因为至少与值进行比较更有意义。

创建一个类似的方法

private int[] promptIntegers(int numberOfIntegers, Scanner sc) {
    int[] integers = new int[numberOfIntegers];
    //read ints
    //return the array
}

并称它为

select = intFind.nextInt();
int[] integers = promptIntegers(select, sc);
//do the comparison among the integers
于 2012-11-13T05:14:27.050 回答