如何使用Java在弹出窗口中显示数组列表的输出？

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();
    result.append(data+\"\\n\");
}