可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):

问题:

I want to hover over a number of JButtons on my GUI (map) and display the name of that location e.g. Manchester and London. I have the code working for one button, but it does not work for more than one button and prints the last out message (as i have 10 buttons) for all button locations.

If button1 is true it then draws the text on the GUI in the specified area via my paintComponent() method.

How can i resolve this?

button1.addMouseMotionListener(this);
button2.addMouseMotionListener(this);

public void mouseMoved(MouseEvent arg0)
{
    if(button1.contains(arg0.getPoint()))
    {
        button1  = true;
        out = "test 1";
        repaint();
    }

    if(!button1.contains(arg0.getPoint()))
    {
        b1 = false;
        out = " ";
        repaint();
    }//same for all 10 buttons but change variables
}

回答1:

Why not use the tool tip API that already exists?

button.setTooltip("Manchester");

You even use HTML text to produce formatted results.

button.setTooltip("<html>Manchester<br>53.4800° N, 2.2400° W</html>");

If the images are embedded, you can even supply an image...

button.setTooltip("<html><img src=" + getClass().getResource("/someimage") + "/>Manchester<br>53.4800° N, 2.2400° W</html>");

回答2:

don't to use MouseListener or MosueMotionListener from JButton, this method are correctly implemented in JButtons API,
there no reason, I can't found reason to use repaint() for this job
another way is add ChangeListener to JButton and take rellated event(s) from derived ButtonModel
for better help sooner post an SSCCE, short, runnable, compilable, just about JFrame with one JButton

回答3:

Well this answer is coolio for JDK 8 users, so try it out:

for regular text

buttonyoumade.setToolTipText("Text you choose");

for html use

anotherbuttonyoumade.setToolTipText("<html> any valid html code </html>");

Hovering over JButtons and displaying a message

问题:

回答1:

回答2:

回答3:

收藏的人(0)

Hovering over JButtons and displaying a message

问题:

回答1:

回答2:

回答3:

收藏的人(0)

举报内容

检举类型

检举原因

检举说明(必填)

打开微信“扫一扫”，打开网页后点击屏幕右上角分享按钮