java - 如何循环这个简单的程序？

Question

我如何循环整个程序？

public class Experiments {
    public static void main(String[] args) {
        int n;

        System.out.print("Please enter a number:");
        n = TextIO.getlnInt();

        while (n<3) {
            System.out.print("Please enter another number:");
            n = TextIO.getlnInt();
        }
        while (n<=5) {
            System.out.println("Number entered should be more than 5.");
            System.out.println("Please re-enter:");
            n=TextIO.getlnInt();
        }
        if (n%2==0) {
            n=n*2+1;
        }
        else {
            n=n*2;
        }
        System.out.println("The result is "+n +".");
    }
}

当它打印出结果时:

The result is 14.

我想让它说这样的话:

Had fun? Lets do it again.
Please enter a number:

或

Had fun? Want do it again. Press y/n.
Please enter a number:

Answer 1

你必须做这样的事情:

Scanner s = new Scanner(System.in);
char c;
do {
   your_code
   c = s.next().charAt(0);
} while(c == 'y');

多亏了这个，你的程序每次都会询问你是否要继续，当你输入“y”时，它会再次循环。否则它将退出循环。