How can I display the output of an array list in a popup window using Java?

Below is what I want to display:

JTextArea result = new JTextArea(10,20);
ArrayList<String> result_set = gen.getResult();
for(Iterator it = result_set.iterator(); it.hasNext();)
{
    String data = (String)it.next();
    res开发者_开发百科ult.append(data+"\n");
}

How can I put a JTextArea in a popup window?

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First you would add the JTextArea to a JScrollPane.

You can then add the scrollpane to a JPopupMenu.

Or you can add the scrollpane to a JOptionPane.

Read the Swing tutorial for more information. There are sections on "How to Use Menus" and "How to Make Dialogs".