private ToolButton createButton(DrawingTool tool, String image, JPanel propertiesPanel) { ToolButton button = new ToolButton( new ImageIcon( Toolkit.getDefaultToolkit().getImage(getClass().getResource("/" + image))), tool, propertiesPanel); button.addActionListener(buttonHandler); button.setPreferredSize(new Dimension(30, 30)); buttonList.add(button); return button; }