Need to update a JScrollPane

Hello!
I have a JPanel that may be resized inside a JScrollPane, but when it happens the scrollpane doesn't updates.

I have the code below so you can test it and se that the JScrollPane stays the same. The updates occurs inside the main-method.

So if you can help me I would be most thankfull.

Best regards
Fredrik

//The JScrollPane
import java.awt.*;
import javax.swing.*;
import java.util.*;


public class MyScrollPanel extends JPanel
{
  private MyPanel myPanel;
  private JScrollPane jscrollPane;

  public MyScrollPanel()
  {
      myPanel = new MyPanel();
      setBackground(Color.pink);
      setLayout(new GridLayout(1,1));
      jscrollPane = new JScrollPane(myPanel, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
      add(jscrollPane);
  }

  public void updateMyPanel(String[] texts)
  {
      myPanel.updateLabels(texts);
      myPanel.updateValues(texts);
      myPanel.updatePanel();

  }

  public static void main(String[] args)
  {
      MyScrollPanel myScrollPanel = new MyScrollPanel();
      JFrame jFrame = new JFrame("MyScrollPanel");
      jFrame.getContentPane().add( myScrollPanel );
      jFrame.setSize(300, 300);
      jFrame.show();
      String[] texts = { "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
      "Obbaobba",
  };
      myScrollPanel.updateMyPanel(texts);
  }
}

//The JPanel
import java.awt.*;
import javax.swing.*;

public class MyPanel extends JPanel
{
  JLabel[] textLabels;
  JLabel[] valueLabels;
  String[] labels;
  String[] values;

  public MyPanel()
  {
      setBackground(Color.yellow);
      setLayout(null);
  }

  public void updateLabels(String[] l)
  {
      labels = l;
  }

  public void updateValues(String[] v)
  {
      values = v;
  }

  public void updatePanel()
  {
      removeAll();

      int x = 10;
      int y = 10;
      textLabels = new JLabel[labels.length];
      valueLabels = new JLabel[labels.length];
      setSize(200, (20+( (2*labels.length*20))) );

      for(int i = 0; i < labels.length; i++)
      {
        textLabels[i] = new JLabel( labels[i] );
        valueLabels[i] = new JLabel( values[i] );
        textLabels[i].setForeground(Color.black);
        valueLabels[i].setForeground(Color.red);
      }

      for(int i = 0; i < labels.length; i++)
      {
        textLabels[i].setBounds(x, y, 200, 20);
        y = y + 20;
        valueLabels[i].setBounds(x, y, 200, 20);
        y = y + 20;
        add(textLabels[i]);
        add(valueLabels[i]);
      }
  }
}