swing界面编程记录

参考一篇强大的文章：

Java----AWT组件开发和Swing界面编程(一)

Java----AWT组件开发和Swing界面编程(二)

Java----网络编程初解

 

 

public static void main(String[] args) {  JFrame frame = new JFrame("测试");  // 定义列表框  JList list = new JList(new String[] { "北京", "天津", "上海", "大连", "青岛", "武汉","西安" });  JScrollPane jsp = new JScrollPane(list);  list.setSelectedIndex(0);  frame.add(jsp);  frame.setVisible(true);  frame.setSize(400, 250);  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();  Dimension frameSize = frame.getSize();  int x = (screenSize.width - frameSize.width) / 2;  int y = (screenSize.height - frameSize.height) / 2;  frame.setLocation(x, y); }