java制作MouseAdapter引用它要添加到的JComponent

Question

我有很多按钮，它们基本上应该以相同的方式工作，但按下按钮时会改变与按钮相关的不同变量（主要是颜色）。我希望尽可能地精简代码（而不是重复10次）

我将如何编写这个适配器，以便它可以用于button1和button2

MouseAdapter customMouseAdapter = new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                button1.setForeground(Color.WHITE);

            }
        };

    button1.addMouseListener(customMouseAdapter);
    button2.addMouseListener(customMouseAdapter);

Answer 1

你可以这样做

public class ColourMouseAdapter extends MouseAdapter
{
    private final Color colour;
    private final JButton button;
    public ColourMouseAdapter(JButton button, Color colour)
    {
        this.colour = colour;
        this.button = button;
    }

    @Override
    public void mouseClicked(MouseEvent e)
    {
         button.setForeground(colour);
    }
}
JButton jbutton = new JButton();
jButton.addMouseListener(new ColourMouseAdapter(jbutton, Color.WHITE));

或者你可以像其他人建议的那样做

public class ColourMouseAdapter extends MouseAdapter
{
    private final Color colour;
    public ColourMouseAdapter(Color colour)
    {
        this.colour = colour;
    }

    @Override
    public void mouseClicked(MouseEvent e)
    {
         if(e.getSource() instanceof JButton)
         {
              JButton button = e.getSource();
              button.setForeground(colour);
         }
    }
}