How to get the size of a file in Java

In this tutorial, we are going to see how to get the size of a file in Java. The Java File class allows you to get the size in bytes of a file. To get the size of a file, call the length() method of the File class. Here is an example to get the size of a file using the length() method.
 

How to get the size of a file in Java

import java.io.File;

public class Main 
{
    public static void main(String[] args)
    {	
		File myFile = new File("C:\\Users\\PC\\Desktop\\test.txt"); 
		
		if(myFile.exists()){
			double bytes = myFile.length();
			double kiloOctets = (bytes / 1024);
			double megaOctets = (kiloBytes / 1024);
			double gigaOctets = (megaBytes / 1024);

			System.out.println("bytes: " + bytes);
			System.out.println("kilo Bytes : " + kiloBytes);
			System.out.println("mega Bytes : " + megaBytes);
			System.out.println("giga Bytes : " + gigaBytes);
		}else{
			 System.out.println("File does not exist!");
		}
    		
    }
}

Output:

bytes: 9545.0
kilo Bytes : 5.86478936
mega Bytes : 0.3215879621364002569
giga Bytes : 5.6235425669874100326998754E-6

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