java基础问题请教！

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class GridLayoutDemo extends JFrame implements ActionListener

{

private JButton buttons[];

private final String names[]={"one","two","three","four","five","six"};

private boolean flag = true;

private Container container;

private GridLayout grid1,grid2;

public GridLayoutDemo()

{

super("GridLayout Demo");

grid1=new GridLayout(2,3,5,5);

grid2=new GridLayout(3,2);

Container container=getContentPane();

container.setLayout(grid1);

buttons=new JButton[names.length];

for(int count=0;count