Add an empty constructor to the SIPCommTextButton in order to allow to set the text after creating the button.

src/net/java/sip/communicator/util/swing/SIPCommTextButton.java

@@ -27,9 +27,17 @@ public class SIPCommTextButton extends JButton
     private final float[] borderColor
         = Color.DARK_GRAY.getRGBComponents(null);
 
+    /**
+     * Creates a <tt>SIPCommTextButton</tt>.
+     */
+    public SIPCommTextButton()
+    {
+        this(null);
+    }
+
     /**
      * Creates a <tt>SIPCommTextButton</tt>
-     * @param text
+     * @param text the text of the button
      */
     public SIPCommTextButton(String text)
     {