framegridbaglayout.java

JAVA的例子程序

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class frameGridBaglayout extends JFrame{
    private JPanel jpanel1=new JPanel();
    private GridLayout g1;
    private JButton JButton1=new JButton("First");
    private JButton JButton2=new JButton("Second");
    private JButton JButton3=new JButton("Third");
    private JButton JButton4=new JButton("Fourth");
    private JButton JButton5=new JButton("Fifth");
    private JButton JButton6=new JButton("Sixth");
    private JButton JButton7=new JButton("Seventh");
    public frameGridBaglayout(){
        super("frameGridLayout");
        setSize(300,150);
        GridBagLayout gb1=new GridBagLayout();
        jpanel1.setLayout(gb1); 
        GridBagConstraints gbc=new GridBagConstraints();
        gbc.fill=GridBagConstraints.BOTH;
        gbc.gridwidth=1;
        gbc.gridheight=1;
        gbc.gridx=0;
        gbc.gridy=0;
        jpanel1.add(JButton1,gbc);
        gbc.gridx=1;
        jpanel1.add(JButton2,gbc);
        gbc.gridx=2;
        jpanel1.add(JButton3,gbc);
        gbc.gridx=0;
        gbc.gridy=1;
        gbc.gridwidth=3;
        jpanel1.add(JButton4,gbc);
        gbc.gridy=2;
        gbc.gridwidth=1;
        jpanel1.add(JButton5,gbc);
        gbc.gridx=1;
        gbc.gridwidth=2;
        gbc.gridheight=2;
        jpanel1.add(JButton6,gbc);
        gbc.gridx=0;
        gbc.gridy=3;
        gbc.gridwidth=1;
        gbc.gridheight=1;
        jpanel1.add(JButton7,gbc);
        this.setContentPane(jpanel1);
        }
    public static void main(String args[]){
        frameGridBaglayout fg1=new frameGridBaglayout();
        fg1.show();
        fg1.addWindowListener(new WindowAdapter(){
        public void windowClosing(WindowEvent e){
            System.exit(0);
            }
        });
        }
    }