Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

public class Main {
    public static String getFileExt(File file) {
        String fileName = file.getName();
        int i = fileName.lastIndexOf('.');
        if (i < 0) {
            return null;
        }
        return fileName.substring(i);
    }

    public static String getFileExt(String fileName) {
        int i = fileName.lastIndexOf('.');
        if (i < 0) {
            return null;
        }
        return fileName.substring(i);
    }
}