java gui布局综合实例.doc

package 布局管理器综合实例;import java.awt.*;import java.awt.FlowLayout;import java.awt.CardLayout;import java.awt.GridBagLayout;import java.awt.BorderLayout;import java.awt.Color;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.*;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JTextField;public class LayoutDemo extends JFrame implements ActionListener private final Stringgrid=网0,格1,布2,局3, 管4,理器5;private JButton gridButton=new JButtongrid.length;private final Stringflow=流,式,布,局, 管,理,器;private JButton flowButton=new JButtonflow.length;private final Stringborder=边界,布局,管,理,器;private JButton borderButton=new JButtonflow.length;/键的按钮 ，数组JButton bt=new JButton(卡片切换);JButton bt1=new JButton(网格包布局);/构造函数public LayoutDemo()super();init();/初始化this.setBackground(Color.YELLOW);/this.setTitle(布局管理器综合实例);this.setLocation(500,300);/设置在屏幕上显示的位置/this.setResizable(false);/设置计算器大小不可改变this.pack();/使计算器中各组件大小合适/初始化函数private void init()JPanel Gridpanel=new JPanel();/网格布局面板Gridpanel.setLayout( new GridLayout(2,3,3,3);for(int i=0;igrid.length;i+)/生成按钮，并添加到面板中gridButtoni=new JButton(gridi);Gridpanel.add(gridButtoni);gridButtoni.setForeground(Color.BLUE);JPanel Flowpanel=new JPanel();/流式布局面板Flowpanel.setLayout( new FlowLayout();for(int i=0;iflow.length;i+)/生成按钮，并添加到面板中flowButtoni=new JButton(flowi);Flowpanel.add(flowButtoni);flowButtoni.setForeground(Color.RED);JPanel Borderpanel=new JPanel();/边界布局面板Borderpanel.setLayout( new BorderLayout();for(int i=0;iborder.length;i+)/生成按钮，并添加到面板中borderButtoni=new JButton(borderi);borderButtoni.setForeground(Color.CYAN);Borderpanel.add(North,borderButton0);Borderpanel.add(East,borderButton1);Borderpanel.add(South,borderButton2);Borderpanel.add(West,borderButton3);Borderpanel.add(Center,borderButton4);JPanel Cardpanel=new JPanel();/卡片布局面板Cardpanel.setLayout(new BorderLayout();JPanel cp=new JPanel();JButton bt=new JButton(卡片切换);bt.addActionListener(this);cp.add(bt);Cardpanel.add(North,cp);JPanel p1=new JPanel();p1.add(new JButton(Button 1);p1.add(new JButton(Button 2);p1.add(new JButton(Button 3);JPanel p2=new JPanel();p2.add(new TextField(TextField,20); JPanel Cards=new JPanel();CardLayout Layout=new CardLayout();Cards.setLayout( Layout);Cards.add(Panel with Buttons,p1);Cards.add(Panel with TextField,p2);Cardpanel.add(Center,Cards);JPanel GridBagpanel=new JPanel();/网格包GridBagpanel.setLayout( new GridBagLayout();GridBagConstraints c=new GridBagConstraints();c.fill=GridBagConstraints.BOTH;c.weightx=1.0;GridBagpanel.add(new JButton(网1),c);GridBagpanel.add(new JButton(格2),c);GridBagpanel.add(new JButton(包3),c);c.gridwidth=GridBagConstraints.REMAINDER;GridBagpanel.add(new JButton(布4),c);c.weightx=0.0;GridBagpanel.add(new JButton(局5),c);c.gridwidth=GridBagConstraints.RELATIVE;GridBagpanel.add(new JButton(管6),c);c.gridwidth=GridBagConstraints.REMAINDER;GridBagpanel.add(new JButton(理7),c);c.gridheight=2;c.gridwidth=1;c.weighty=1.0;GridBagpanel.add(new JButton(器8),c);c.weighty=0.0;c.gridwidth=GridBagConstraints.REMAINDER;c.gridheight=1;GridBagpanel.add(new JButton(器9),c);GridBagpanel.add(new JButton(器0),c); getContentPane().setLayout(new BorderLayout(); getContentPane().add(North,Flowpanel); getContentPane().add(West,GridBagpanel); getContentPane().add(Center,Borderpanel); getContentPane().add(East,Cardpanel); getContentPane().add(South,Gridpanel); public void actionPerformed(A