Find Size of folder or file in java

Find Size of folder or file in java

package com.javanotes2all.java.files;

import java.io.File;

public class FindSizeOfFile 
{

 public static void main(String[] args)
 {
  File file= new File("file/directoty");
  long size =0;
  size=getSize(file);

  // Convert the size in bytes to mega bytes/Killo bytes.

  double sizeInMB =(double)size / 1024 / 1024;
  String s="MB";
  if(sizeInMB<1)
  {
   sizeInMB=(double)size / 1024;
   s="KB";
  }

  System.out.println(file.getName()+":"+sizeInMB+s); 

 } 
 public static long getSize(File dir) {
  long size = 0;
  if(dir.isDirectory())
  {
   for (File file : dir.listFiles()) {
    if (file.isFile()) {
     size += file.length();
    }
    else
     size += getSize(file);
   }
  }else if(dir.isFile())
  {
   size += dir.length();
  }
  return size;
 }

}