swing tabbedPanel奇怪的BUG

Question

tabbedPanel出现奇怪的BUG，显示一条奇怪的线不知道为何。

代码如下：
tabs = new String[]{"采集","高佣采集","转换购买","启动下载","热词采集","商品管理","商品同步","联系我们"};
tabbedPane = new JTabbedPane(JTabbedPane.TOP);
tabbedPane.setFont(new Font("宋体", Font.PLAIN, 16));
tabbedPane.setBackground(Color.LIGHT_GRAY);
tabbedPane.setBounds(115, 20, 730, 35);
frame.getContentPane().add(tabbedPane);

    for (int i = 0; i < tabs.length; i++) {

// JLabel label = new JLabel(tabs[i]);
// label.setSize(110, 35);
// label.set
tabbedPane.addTab(tabs[i], null, null, null);
}

Answer 1

http://blog.csdn.net/memory_xj/article/details/3389220