Long Cannot Be Dereferenced?

[caps_lock]

i am getting the error in the title, how do I solve this please?

import java.io.File;

public class TestingClass{
    public static void main( String [] args ) {
        File actual = new File(".");
        
          
        
        for( File f : actual.listFiles())
        for( File e : actual.listFiles()){
            {
if (f.length().equals(e.length())) {
    System.out.println (e.getName() + f.length());
}
        }
    }
}



}

[Fubarable]

f.length returns a long, a primitive type. You can't call a method such as .equals on this as it is similar to trying to call this:

if (3.equals(4)) { //...

Use == instead here.

if (f.length() == e.length()) {