如何一次性输入全部手机号序列然后隐藏

 import java.util.Scanner;

public class TelephoneNumHandling {

    /**
     * @param args
     */
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String string = "";
        while (scanner.hasNext()) {
            string = (String) scanner.next();
            handlingNum(string); // invoke handling
        }
    }

    private static void handlingNum(String string) {
        System.out.println(string.substring(0,3)+"****"+string.substring(7, string.length()));
    }

}