package prgridbaglayout;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class PrGridBagLayout extends JFrame{

    JPanel panel=new JPanel();
    GridBagLayout gbl=new GridBagLayout();
    JButton btn1=new JButton("btn1");
    JButton btn2=new JButton("btn2");
    JButton btn3=new JButton("btn3");
    JButton btn4=new JButton("btn4");
    JButton btn5=new JButton("btn5");
    JButton btn6=new JButton("btn6");
    JButton btn7=new JButton("btn7");

    public PrGridBagLayout() {
        super("Менеджер раскладки");
        addWindowListener(new WindowAdapter(){
                                  public void windowClosing(WindowEvent e){
                                      dispose();
                                      System.exit(0);
                                  }
                              });

        btn4.setPreferredSize(new Dimension(200,25));
        btn7.setPreferredSize(new Dimension(100,25));
        panel.setLayout(gbl);
        panel.add(btn1,             new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(5, 5, 5, 5), 0, 0));
        panel.add(btn2,             new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(5, 5, 5, 5), 0, 0));
        panel.add(btn3,             new GridBagConstraints(2, 0, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(5, 5, 5, 5), 0, 0));
        panel.add(btn4,             new GridBagConstraints(3, 0, 2, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(5, 5, 5, 5), 0, 0));
        panel.add(btn5,             new GridBagConstraints(0, 1, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(5, 5, 5, 5), 0, 0));
        panel.add(btn6,             new GridBagConstraints(1, 1, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(5, 5, 5, 5), 0, 0));
        panel.add(btn7,             new GridBagConstraints(4, 1, 1, 1, 0.0, 0.0
            ,GridBagConstraints.LAST_LINE_END, GridBagConstraints.NONE, new Insets(5, 5, 5, 5), 0, 0));

        this.getContentPane().add(panel);
        pack();
        show();
    }

    public static void main(String[] args){
        PrGridBagLayout cl=new PrGridBagLayout();
    }
}