Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.io.File;
import java.util.Locale;

public class Main {
    public static String getExtensionFromFileName(String fileName) {
        int slash = fileName.lastIndexOf(File.separatorChar);
        int dot = fileName.lastIndexOf('.');
        if (slash >= dot) {
            return null;
        }
        String extension = fileName.substring(dot + 1).toLowerCase(Locale.ENGLISH);
        return extension;
    }
}