public class SchackPanel extends JPanel 
{
	private final Dimension PANEL_STORLEK = new Dimension(500,500);
	private final Color BAKGRUNDS_FARG = Color.white;
	
	public SchackPanel(int N) 
	{
		
		setPreferredSize(PANEL_STORLEK);
		setBackground(BAKGRUNDS_FARG);
		
		
		
		setLayout(new GridLayout(N,N));
		
		int c= 0;
		int x =(int) (N %2);
		
		for (int i = 0; i<N; i++) //rad
		{
			if (x == c ){
			
				
				for (int j = 0; j<N; j++)//column
				{
					if ((int)x == c){
					
						add(new JButton("Button 1"));

					}
					else
					{
	
						add(new JButton("Button 2"));

					
				}
			} 
				}
			else
			{
					for (int k = 0; k<N; k++)
					{
					     if (x != c)
					{
						add(new JButton("Button 2"));

					     }			
						else
					     {

					         add(new JButton("Button 1"));

						}	
								
					
						}
			}
			}


		}
	}