20100918_Dawning_GridBag布局

package com.swing.demo; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; /*** * 使用GridBag布局【高端】 * * @author Administrator * */ public class GridBagFrameTest extends JFrame{ private static final long serialVersionUID = 1L; private void initUI(){ this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setSize(400, 400); this.getContentPane().add(getMainPanel()); this.setVisible(true); } public GridBagFrameTest(){ initUI(); } private JPanel getLeftPanel(){ JPanel panel = new JPanel(); panel.setLayout(new GridBagLayout()); JButton button1 = new JButton("B1"); JButton button3 = new JButton("B3"); GridBagConstraints b1C = new GridBagConstraints(); b1C.gridx = 0; b1C.gridy = 0; b1C.weightx = 1.0; b1C.weighty = 2.0; b1C.fill = GridBagConstraints.BOTH; panel.add(button1, b1C); b1C.gridx = 0; b1C.gridy = 1; b1C.weighty = 1.0; panel.add(button3, b1C); return panel; } private JPanel getRightPanel(){ JPanel panel = new JPanel(); panel.setLayout(new GridBagLayout()); JButton button2 = new JButton("B2"); JButton button4 = new JButton("B4"); GridBagConstraints b2C = new GridBagConstraints(); b2C.gridx = 0; b2C.gridy = 0; b2C.weightx = 1.0; b2C.weighty = 3.0; b2C.fill = GridBagConstraints.BOTH; panel.add(button2, b2C); b2C.gridx = 0; b2C.gridy = 1; b2C.weighty = 2.0; panel.add(button4, b2C); return panel; } private JPanel getMainPanel(){ JPanel panel = new JPanel(); panel.setLayout(new GridBagLayout()); GridBagConstraints b3C = new GridBagConstraints(); b3C.fill = GridBagConstraints.BOTH; b3C.gridx = 0; b3C.gridy = 0; b3C.weighty = 1.0; b3C.weightx = 3.0; panel.add(getLeftPanel(), b3C); b3C.gridx = 1; b3C.gridy = 0; b3C.weightx = 2.0; panel.add(getRightPanel(), b3C); return panel; } /** * @param args */ public static void main(String[] args) { new GridBagFrameTest(); } }