enumber.java

本程序实现八数码的实现

import java.awt.*;
import javax.swing.*;
public class ENumber extends JFrame 
{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	/**
	 * 
	 */
	
	private JButton buttons[][];
	private Container container;
	private final String names[][]={{"1","2","3"},{"4","5","6"},{"7","8",""}};
	private JPanel panel;
	public ENumber()
	{
		super( "演示过程" );
		container = getContentPane();
		container.setLayout( new BorderLayout( 5, 5 ) );
		panel = new JPanel( new GridLayout( 3, 3, 5, 5 ) );
		buttons = new JButton[3][3];
		initButtons();  
		container.add( panel, BorderLayout.CENTER );
		setSize( 280, 290 );
		setLocation(250,350);
		setAlwaysOnTop(true); 
		setVisible(true);
		setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
	}
	public void initButtons()
	{
		for ( int i=0; i<3;i++ )
		{
			for(int j=0;j<3;j++)
			{
				buttons[i][j] = new JButton( names[i][j] );
				buttons[i][j].setFont( new Font( "Serif", Font.BOLD, 40 ) );
				panel.add(buttons[i][j]);
				buttons[i][j].setVisible(false);
			}
		}
		buttons[2][2].setEnabled( false );
	}
	public void reInitButtons()
	{
		for (int i=0;i<3;i++)
		{
			for(int j=0;j<3;j++)
			{
				if(names[i][j]=="")
				{
					buttons[i][j].setText(names[i][j]);
					buttons[i][j].setEnabled(false);
					buttons[i][j].setVisible(false);
				}
				else 
				{
					buttons[i][j].setText(names[i][j]);
					buttons[i][j].setEnabled( true );
					buttons[i][j].setVisible(true);
				}
			}
		}
	}
	public void zhuanhuan(final Node n)
	{
		for (int i=0;i<3;i++)
		{
			for(int j=0;j<3;j++)
			{
				if(n.array[i][j]!=0)
				{
					names[i][j]=Integer.toString(n.array[i][j]);
				}
				else
				{
					names[i][j]="";
				}
			}
		}
	}
}