Help with an If Statement for a Message Dialog

Question

Hello all! I need help yet once again! I would prefer hints and nudges rather then the answer please, as this is for a homework assignment. Okay I am supposed to write a program that has 3 text boxes to enter a number between 0 and 255 (for red green and blue) and then the user should push the show button and the background color should change, which I have all working! But I am supposed to have a " gracefully handle the situation where the user enters an invalid color value (any number less than zero or greater than 255)" and I have the if statement written, but for some reason, whenever I hit the show button it always pops up that window, no matter what the user types in. So I need help figuring out how to make it stop popping up all of the time! Here is the code: Any other ideas on how to make the code better would be much appreciated!!! Thanks in advance!
import java.awt.GridLayout;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.JPanel;
import javax.swing.BorderFactory;
public class ColorEditor extends JPanel {
     private JLabel labelRed;
     private JLabel labelGreen;
     private JLabel labelBlue;
     private JTextField textFieldRed;
     private JTextField textFieldGreen;
     private JTextField textFieldBlue;
     private JButton showButton;
     private JButton exitButton;
     private JOptionPane optionPane;
     public ColorEditor()
          super(new BorderLayout());
          labelRed = new JLabel("red: ");
          textFieldRed = new JTextField(5);
          labelGreen = new JLabel("green: ");
          textFieldGreen = new JTextField(5);
          labelBlue = new JLabel("blue: ");
          textFieldBlue = new JTextField(5);
          showButton = new JButton("show");
          exitButton = new JButton("exit");
          JPanel labelPane = new JPanel(new GridLayout(0,1));
          labelPane.add(labelRed);
          labelPane.add(labelGreen);
          labelPane.add(labelBlue);
          labelPane.add(showButton);
          JPanel fieldPane = new JPanel( new GridLayout(0,1));
          fieldPane.add(textFieldRed);
          fieldPane.add(textFieldGreen);
          fieldPane.add(textFieldBlue);
          fieldPane.add(exitButton);
          setBorder(BorderFactory.createEmptyBorder(40,40,40,40));
          add(labelPane, BorderLayout.LINE_START);
          add(fieldPane, BorderLayout.CENTER);
          TextFieldHandler handler = new TextFieldHandler();
          textFieldRed.addActionListener(handler);
          textFieldGreen.addActionListener(handler);
          textFieldBlue.addActionListener(handler);
          showButton.addActionListener(handler);
     private class TextFieldHandler implements ActionListener
          public void actionPerformed(ActionEvent event)
               if (event.getSource() == showButton)
                    String textRed = textFieldRed.getText();
                    String textGreen = textFieldGreen.getText();
                    String textBlue = textFieldBlue.getText();
                    int a = Integer.parseInt(textRed);
                    int b = Integer.parseInt(textGreen);
                    int c = Integer.parseInt(textBlue);
                    if ((a < 0) || (a > 255)||(b<0)||(b>255)||(c<0)||(c>255));
                         optionPane.showMessageDialog(null, "Please enter a number between 0 and 255!");//HERE IS WHERE I NEED THE HELP!!
                    Color colorObject = new Color(a,b,c);
                    setBackground(colorObject);
     public static void main(String args[])
          JFrame frame = new JFrame("Color Editor");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
          frame.add(new ColorEditor());
          frame.pack();
          frame.setVisible(true);
}

Answer 1

Okay now Eclipse is giving me a really funky error that I cannot quite figure out (in the compiler) but my program is running fine.... Can you help me with this too?
Here is what the compiler is giving me....
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Color parameter outside of expected range: Green
+     at java.awt.Color.testColorValueRange(Unknown Source)+
+     at java.awt.Color.<init>(Unknown Source)+
+     at java.awt.Color.<init>(Unknown Source)+
+     at ColorEditor$TextFieldHandler.actionPerformed(ColorEditor.java:80)+
+     at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)+
+     at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)+
+     at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)+
+     at javax.swing.DefaultButtonModel.setPressed(Unknown Source)+
+     at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)+
+     at java.awt.Component.processMouseEvent(Unknown Source)+
+     at javax.swing.JComponent.processMouseEvent(Unknown Source)+
+     at java.awt.Component.processEvent(Unknown Source)+
+     at java.awt.Container.processEvent(Unknown Source)+
+     at java.awt.Component.dispatchEventImpl(Unknown Source)+
+     at java.awt.Container.dispatchEventImpl(Unknown Source)+
+     at java.awt.Component.dispatchEvent(Unknown Source)+
+     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)+
+     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)+
+     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)+
+     at java.awt.Container.dispatchEventImpl(Unknown Source)+
+     at java.awt.Window.dispatchEventImpl(Unknown Source)+
+     at java.awt.Component.dispatchEvent(Unknown Source)+
+     at java.awt.EventQueue.dispatchEvent(Unknown Source)+
+     at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)+
+     at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)+
+     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)+
+     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)+
+     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)+
+     at java.awt.EventDispatchThread.run(Unknown Source)+