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About Ilias Tsagklis

Ilias Tsagklis
Ilias is a software developer turned online entrepreneur. He is co-founder and Executive Editor at Java Code Geeks.

Get size of file in bytes

This is an example of how to get the size of a File in bytes. We are using the File class that is an abstract representation of file and directory pathnames. Getting the size of a File implies that you should:

  • Create a new File instance by converting the given pathname string into an abstract pathname.
  • Use the length() API method of File. This method returns the length of the file denoted by this abstract pathname. The return value is unspecified if this pathname denotes a directory.

Let’s take a look at the code snippet that follows:

package com.javacodegeeks.snippets.core;

import java.io.File;

public class GetSizeOfFileInBytes {
	
	public static void main(String[] args) {
		
		File file = new File("C://file.txt");
		
		// Returns the length of the file denoted by this abstract pathname.
	    // The return value is unspecified if this pathname denotes a directory.
		long size = file.length();
		 
		System.out.println("File size in bytes is: " + size);	
	}
}

 
This was an example of how to get the size of a File in bytes in Java.

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