Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * Copyright (c) 2012 Todoroo Inc
 *
 * See the file "LICENSE" for the full license governing this code.
 */

public class Main {
    /**
     * Returns the final word characters after the last '.'
     */
    public static String getFileExtension(String file) {
        int index = file.lastIndexOf('.');
        String extension = "";
        if (index > 0) {
            extension = file.substring(index + 1);
            if (!extension.matches("\\w+")) {
                extension = "";
            }
        }
        return extension;
    }
}