src/java.desktop/share/classes/javax/swing/colorchooser/ColorPanel.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -28,21 +28,22 @@
 import java.awt.Color;
 import java.awt.ContainerOrderFocusTraversalPolicy;
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.Insets;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
+import java.awt.event.ItemEvent;
+import java.awt.event.ItemListener;
 import javax.swing.ButtonGroup;
+import javax.swing.DefaultButtonModel;
 import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.JRadioButton;
 import javax.swing.border.EmptyBorder;
 import javax.swing.JSpinner.DefaultEditor;
 
 @SuppressWarnings("serial") // Superclass is not serializable across versions
-final class ColorPanel extends JPanel implements ActionListener {
+final class ColorPanel extends JPanel implements ItemListener {
 
     private final SlidingSpinner[] spinners = new SlidingSpinner[5];
     private final float[] values = new float[this.spinners.length];
 
     private final ColorModel model;

@@ -71,11 +72,11 @@
                     gbc.insets.top = 5;
                 }
                 add(button, gbc);
                 group.add(button);
                 button.setActionCommand(Integer.toString(i));
-                button.addActionListener(this);
+                button.getModel().addItemListener(this);
                 this.spinners[i] = new SlidingSpinner(this, button);
             }
             else {
                 JLabel label = new JLabel();
                 add(label, gbc);

@@ -104,20 +105,26 @@
         setFocusable(false);
 
         this.model = model;
     }
 
-    public void actionPerformed(ActionEvent event) {
+    @Override
+    public void itemStateChanged(ItemEvent e) {
+        if(e.getStateChange() == ItemEvent.SELECTED) {
+            if (e.getSource() instanceof DefaultButtonModel) {
+                DefaultButtonModel model = (DefaultButtonModel) e.getSource();
         try {
-            this.z = Integer.parseInt(event.getActionCommand());
+                    this.z = Integer.parseInt(model.getActionCommand());
             this.y = (this.z != 2) ? 2 : 1;
             this.x = (this.z != 0) ? 0 : 1;
             getParent().repaint();
         }
         catch (NumberFormatException exception) {
         }
     }
+        }
+    }
 
     void buildPanel() {
         int count = this.model.getCount();
         this.spinners[4].setVisible(count > 4);
         for (int i = 0; i < count; i++) {