Easy question about JScrollPane issue

Question

The problem is I do not understand why it is not possible, or what I am doing wrong to not be able to initialize a JScrollPane with a variable and call it later, real easy to see in the code below.
NOTE! I CAN use scrollbars, but only without initializing first, am just trying to understand how to properly do this with initialization or if it is not possible.
Thank you!!!!
just look for the First 3 commented sections with stars ******
import java.awt.Container;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class SquareIntegers extends JApplet {
     // set up GUI and calculate squares of integers from 1 to 10
     public void init() ///all variables below are LOCAL, because used only in "init()" if needed elsewhere make above in the CLASS
                         //OR SAVE VALUES between calls to the class's methods
            // get applet's content pane (GUI component display area)
          Container container = getContentPane();
          container.setLayout(new FlowLayout());
          //creaing a layout because I wanted to add a scroll pane
          //container.setLayout(new BorderLayout());
          // JTextArea to display results
          JTextArea outputArea = new JTextArea(8, 8);
          // JScrollPane myscrollbar = new JScrollPane( outputArea ); //********************this is line 27 why does this along with line 33 NOT work????????
          // attach outputArea to container
          container.add( outputArea);
          //container.add( myscrollbar); ******************************this is Line 33 why does this along with line 277 NOT work????????
          container.add(new JScrollPane( outputArea ));//***********this is Line 34, if I comment out 27/33, and just use this, scrollbars
                                                                 // work correctly, but I have heard/seems better to "initialize variables first"
          int result; // store result of call to method square
          String output = ""; // String containing results
          // loop 10 times
               for ( int counter = 1; counter <= 10; counter++ ) {
               // calculate square of counter and store in result
               result = square( counter );           //***********************uses the CUSTOM method from line 44
               // append result to String output
               output += "The square of " + counter +
               " is " + result + "\n";
               } // end for structure
     outputArea.setText( output ); // place results in JTextArea
} // end method init
     // square method definition...***** This is a CUSTOM method creation..... if "Math.sqrt" was used, we would not have to do this
     public int square( int y )
     return y * y;      // return square of y this is RETURNED to the statement in "init()" that originally invoked the
                         // "square()" method - in this case line 32, where RESULT invoked the METHOD, so "result" gets the value of RETURN
                         // if it were "public int square()" that means the method does NOT return a value
The general format of a method definition is
return-value-type method-name( parameter-list )
declarations and statements
including "return;" or "return EXPRESSION;"
     } // end method square ALL METHODS must always be created inside the CLASS definition, as this one is... notice the closing
          // CLASS bracket below
} // end class SquareIntegers

Answer 1

Thank you!!!
I think I understand...... since the JScrollPane already assigned itself to the JTextArea....
when "adding" to the parent container, the only necessary component to call was in fact the JScrollPane with the container.add( myscrollbar); I do not know if this is correct, but I thank you for your help, because this definitely confused me, back to studying :)
I have it 100% operational, just posting this to say thank you that it worked, and it will help further my and possibly others understanding of this.