Java Examples - Getting the File size


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Problem Description

How to get the file size from the server ?

Solution

Following example demonstrates How to get the file size from the server.

import java.net.URL;
import java.net.URLConnection;

public class Main {
   public static void main(String[] argv) throws Exception {
      int size;
      URL url = new URL("http://www.server.com");
      URLConnection conn = url.openConnection();
      size = conn.getContentLength();
      
      if (size < 0) System.out.println("Could not determine file size.");
      else System.out.println("The size of file is = " + size + "bytes");
      conn.getInputStream().close();
   }
}

Result

The above code sample will produce the following result.

The size of file is = 1312bytes

The following is an another example to get the file size from the server.

import java.net.URL;
import java.net.URLConnection;

public class NewClass {
   public static void main(String[] argv) throws Exception {
      int size;
      URL url = new URL("https://www.tutorialspoint.com/javaexamples/net_multisoc.htm");
      URLConnection conn = url.openConnection();
      size = conn.getContentLength();
      if (size < 0) System.out.println("file size is empty.");
      else System.out.println("File size is = " + size + "bytes");
      conn.getInputStream().close();
   }
}

The above code sample will produce the following result.

File size is = 18862bytes

java_networking.htm

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