Container contentPane = getContentPane();
        JPanel textPanel = new JPanel();
        //创建并添加一个带滚动条的文本区,文本可以自动换行
        JTextArea scrollArea = new JTextArea("", HEIGHT / 20, WIDTH / 12);
        scrollArea.setLineWrap(true);
        JScrollPane scrollPane = new JScrollPane(scrollArea);
        textPanel.add(scrollPane);
        contentPane.add(textPanel);