how to check if file is empty - Java

File f = new File(fileName);

try  

{

     if( f.length() == 0 )

     {
          f.createNewFile();
     }  

     else  

     {
            doSomething()
     }
} 

catch (IOException e)  

{
        System.out.println("IO Error: " + e.getMessage());
} 

    finally  

{