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 long getFolderSize(File folder) throws IllegalArgumentException {
        // Validate
        if (folder == null || !folder.isDirectory())
            throw new IllegalArgumentException("Invalid   folder ");
        String list[] = folder.list();
        if (list == null || list.length < 1)
            return 0;

        // Get size
        File object = null;
        long folderSize = 0;
        for (int i = 0; i < list.length; i++) {
            object = new File(folder, list[i]);
            if (object.isDirectory())
                folderSize += getFolderSize(object);
            else if (object.isFile())
                folderSize += object.length();
        }
        return folderSize;
    }

    public static boolean isDirectory(File file) {
        return file.exists() && file.isDirectory();
    }

    public static boolean isFile(File file) {
        return file.exists() && file.isFile();
    }
}