Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    private static final String VISACreditCardPattern = "^4[0-9]{12}(?:[0-9]{3})?$";

    private static boolean isVISACard(String creditCardNumber) {
        Pattern pattern = Pattern.compile(VISACreditCardPattern);
        Matcher matcher = pattern.matcher(creditCardNumber);
        return matcher.find();
    }
}