请问这段Code如何实现在BUTTON CLICK事件中改变BUTTON BACKCOLOR?

Question

设置Button的颜色？
redButton.setBackground(Color.blue);

Answer 1

是不是这样：？                
public void actionPerformed(ActionEvent event)
                {
                        ButtonPanel.this.setBackground(backgroundColor);
                        Component[] buttonArray=ButtonPanel.this.getComponents();
                        for(int i=0;i<buttonArray.length;i++)
                          ((JButton)buttonArray[i]).setBackground(Color.lightGray);
                        JButton button=(JButton)event.getSource();
                        button.setBackground(backgroundColor);
                        repaint();
                }