Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.text.TextUtils;

public class Main {
    private static final int LENGTH_EXPIRY_DATE = 4;

    public static boolean isValid(String expiry) {

        if (TextUtils.isEmpty(expiry)) {
            return false;
        }

        if (expiry.length() != LENGTH_EXPIRY_DATE) {
            return false;
        }

        // check all numeric
        if (!TextUtils.isDigitsOnly(expiry)) {
            return false;
        }

        // check month valid
        int month = Integer.parseInt(expiry.substring(0, 2));

        if (month < 1 || month > 12) {
            return false;
        }

        return true;
    }
}