我怎样才能加载和存储那些图标图像2,78KB大小在内存中，并在内存中引用它，所以它不会延迟读取它们？

当点击一个座位时，我需要改变那个座位的标签图像，并从那个座位上移除鼠标侦听器。有没有办法在不引用特定鼠标侦听器的情况下将鼠标侦听器移除到那个特定的座位上。我需要在鼠标侦听器本身之外做到这一点！

panel.removeAll();

不会删除生成面板时添加的鼠标侦听器。

public void drawSeats(int ammountSeat, int localLength, int localWidth) {

        pnlSeatsHolder = new JPanel();
        pnlSeatsHolder.setPreferredSize(new Dimension(localLength * 40,localLength * 45)); 
        pnlSeatsHolder.setLayout(new FlowLayout());

        for (int d = 0; d <= (ammountSeat); d++) {
            imgIconYellow = new ImageIcon("seatYellow.png");
            imgIconBlue = new ImageIcon("seatBlue.png");
            imgIconRed = new ImageIcon("seatRed.png");

            JButton chairs = new JButton();
            chairs.setPreferredSize(new Dimension(30, 40));    
            pnlSeatsHolder.add(chairs);

            chairs.addMouseListener(new MouseListener() {
                public void mouseClicked(MouseEvent e) {
                    for (int i = 0; i < listSeatsObjects.size(); i++) {
                        if (listSeatsObjects.get(i).equals(e.getSource())) {
                /*I need to do this also outside of this method! how can i refer to this MouseListener
                 * to forexample do the equivalent of chairs.removeMouseListener(this);*/
                            chairs.removeAll();
                            chairs.setIcon(imgIconRed);
                            chairs.repaint();
                            chairs.removeMouseListener(this);
                            // send information of the chair somewhere else
                        }
                    }
                }
                public void mouseEntered(MouseEvent e) {
                    // chairs.setBackground(Color.blue);
                    chairs.removeAll();
                    chairs.setIcon(imgIconBlue);
                    chairs.repaint();
                }
                public void mouseExited(MouseEvent e) {
                    // chairs.setBackground(Color.BLACK);
                    chairs.removeAll();
                    chairs.setIcon(imgIconYellow);
                    chairs.repaint();
                }
                public void mousePressed(MouseEvent e) {
                }
                public void mouseReleased(MouseEvent e) {
            }
        });
    }
}

所以这是它自己的方法，当被调用时绘制座位。我做了一些修改@AndrewThompson建议，而不是我现在使用的JPanels JButton，但发生的是图像根本没有加载到按钮上…我缺少什么？鼠标悬停也没有…如果我有例如charis. setBack地颜色（）；悬停或单击…所以我现在需要在单击和悬停时更改图像按钮，我试过椅子.setRolloverIcon（）；和.setIcon（）；两者都不起作用。怎么了。我的图像与类文件在同一个目录中…所以这不是问题…

int localLlong， int localWidth是座位将被绘制的房间的大小。大约1m^2/个座位