Remove static from createButton method
diff --git a/bundles/org.eclipse.rap.addons.filedialog/src/org/eclipse/swt/widgets/FileDialog.java b/bundles/org.eclipse.rap.addons.filedialog/src/org/eclipse/swt/widgets/FileDialog.java
index e1c5c52..79016c2 100644
--- a/bundles/org.eclipse.rap.addons.filedialog/src/org/eclipse/swt/widgets/FileDialog.java
+++ b/bundles/org.eclipse.rap.addons.filedialog/src/org/eclipse/swt/widgets/FileDialog.java
@@ -281,7 +281,7 @@
     spacer.setLayoutData( createButtonLayoutData( spacer ) );
   }
 
-  protected static Button createButton( Composite parent, String text ) {
+  protected Button createButton( Composite parent, String text ) {
     Button button = new Button( parent, SWT.PUSH );
     button.setText( text );
     button.setLayoutData( createButtonLayoutData( button ) );