java BorderLayout版面布局

import java.awt.BorderLayout; import java.awt.Container; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; public class BorderLayoutDemo { public BorderLayoutDemo() { JFrame jf = new JFrame(); Container contentPane = jf.getContentPane(); contentPane.setLayout(new BorderLayout()); contentPane.add(new JButton("EAST"), BorderLayout.EAST);// 将按钮放到东侧 contentPane.add(new JButton("WEST"), BorderLayout.WEST);// 将按钮放到西侧 contentPane.add(new JButton("SOUTH"), BorderLayout.SOUTH);// 将按钮放到南侧 contentPane.add(new JButton("NORTH"), BorderLayout.NORTH);// 将按钮放到北侧 contentPane.add(new JLabel("CENTER", JLabel.CENTER), BorderLayout.CENTER);// 将按钮放到中部 jf.setTitle("BorderLayout版面布局");// 设置标题 jf.pack(); jf.setVisible(true); /* * 对一个窗口进行关闭操作，如果没有写这一段，即使你已经关闭窗口了，但程序并不会终止。 */ jf.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); } public static void main(String[] args) { BorderLayoutDemo b = new BorderLayoutDemo(); } }