小编Dan*_*iel的帖子

每次输入String或Char时,我的read()方法都会崩溃.我怎么能让它只接受整数值.当我输入一个int,它工作正常,但当我输入一个字符串或字符串时,我得到一个重复的"输入帐户打开的那天:null"错误.我必须终止程序才能阻止它.

private void readDay(Scanner keyboardIn) {
    boolean success = false;
    while (!success) {
        try {
            System.out.print("Enter the day the account opened: ");
            int d = keyboardIn.nextInt();
            dateOpened.setDay(d);
            success = true;
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
}

// Enter the month, checking for error
private void readMonth(Scanner keyboardIn) {
    boolean success = false;
    while (!success) {
        {
            try {
                System.out.print("Enter the month the account opened: ");
                int m = keyboardIn.nextInt();
                dateOpened.setMonth(m);
                success = true;
            } catch (Exception e) …