Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    public static boolean isNum(String content) {
        if (content.length() != 6) {
            return false;
        }
        for (int i = 0; i < content.length(); i++) {
            char c = content.charAt(i);
            if (!Character.isDigit(c)) {
                return false;
            }
        }
        return true;
    }
}