Norm Radder

Or use the fully qualified name of the class that is in the java.util package.

A poor solution that will lead to confusion.

what could I do to resolve it?

Move the logic code out of the main method into another method in the Scraper classes.  Then have the runScper method call that method to do the desired work.
If you still want the Scraper classes to work standalone, Change the main method to have it create an instance of the class and call the newly created method where the work will be done.

Why is that

A method is not executed unless it is explicitly called.  An exception is when the JVM calls the main method when the class is started with the java command.

it's not running

How do you know? 
There needs to be code in the empty methods at lines 124 and 166.  At least add a print statement to show that the method was executed.

Note: The main method in the Scraper classes will not be called.  You need to explicitly call them if you want the code in the main methods to executed.

I don't know what the problem is.  Here is an example where I renamed the class file by adding XXX so it did not represent what was in the file and it worked:

javap -v AppletCommMainXXX.class
Classfile /D:/JavaDevelopment/Testing/Applet_Tests/ForTest/AppletCommMainXXX.class
  Last modified Oct 9, 2005; size 2386 bytes
  MD5 checksum ad8842a92854a5204a7b22ce8ee7e928
  Compiled from "AppletCommMain.java"
public class Testing.AppletCommMain extends java.applet.Applet implements java.awt.event.ItemListener
  minor version: 3
  major version: 45

Another test with a file that was not a class file:

D:\BatchFiles>cmd.exe /K cd "D:\JavaDevelopment\Testing\Applet_Tests\ForTest"

D:\JavaDevelopment\Testing\Applet_Tests\ForTest>dir
Volume in drive D is Work
Volume Serial Number is 76C0-3722

Directory of D:\JavaDevelopment\Testing\Applet_Tests\ForTest

08/15/2018  05:26 PM    <DIR>          .
08/15/2018  05:26 PM    <DIR>          ..
10/09/2005  11:39 AM             2,386 AppletCommMainXXX.class
08/15/2018  05:26 PM            21,971 JavapConsole.txt
               2 File(s)         24,357 bytes
               2 Dir(s)  15,458,840,576 bytes free

D:\JavaDevelopment\Testing\Applet_Tests\ForTest>javap -v JavapConsole.txt
Error: class not found: JavapConsole.txt                      <<<<<<<<<< NOTE error message

D:\JavaDevelopment\Testing\Applet_Tests\ForTest>dir JavapConsole.txt
Volume in drive D is Work
Volume Serial Number is 76C0-3722

Directory of D:\JavaDevelopment\Testing\Applet_Tests\ForTest

08/15/2018  05:26 PM            21,971 JavapConsole.txt
               1 File(s)         21,971 bytes
               0 Dir(s)  15,458,840,576 bytes free

D:\JavaDevelopment\Testing\Applet_Tests\ForTest>

What is all this after the name of the class file?

Classfile com.devguerrilla.qui
ckstart.cxf.countrylookup.CountryLookupServiceImpl.class

Did you try:
javap -v CountryLookupServiceImpl.class

Can you use the dir command to list all the files in the folder
and then use the javap command that shows the file not found message.

Copy the contents of the command prompt window and paste it here.

the user can see and edit it. 

On Windows you could use the Registry which raises the bar on user changes. 

Encrypting the contents would make it harder for a user to change it.

The object of the test with applet tag and appletviewer is to make sure the paths are good and that the JVM can find the class.

Have you tried it with an <APPLET tag?>

java.lang.ClassNotFoundException: com.test.rec.applet.PrintApplet.class

Did you see the Note at the end of my last post?

Try a giving a class name without the ending .class

Are you sure the .class file is in the correct location for the JVM to be able to find it?

  class not found exception

Can you copy the full contents of the error message and paste it here.  It should show the name of the class that was not found.

Note: A class name does not end with .class.  Filenames end with .class

how do I get the winner after i compare the average computed? 

Often the winner is the one with the highest score.  Given a list of scores, search the list for the highest value.

how do you return an index?

return array[i];   //  return value in array at index i

For the code you show referencing an element in array, the index is i.

So to return the index:  return i;  // return the index

highest and lowest values must be returned as ints?

What about returning the index of the values?   Have we seen the details of the assignment?  The OP posted method signatures.

I disagree.  I see this as a reasonable exercise.
The tricky bit is removing the high and low scores.