public void paintComponent(Graphics g) {
		super.paintComponent(g);
		
		//Set background of soduku box
		g.setColor(Color.WHITE);
		g.fillRect(25, 25, 326, 326);
		g.setColor(Color.BLACK);
			
		//Surrounding box		
		g.fillRect(25, 25, 326, 5);   //Top line
		g.fillRect(346, 25, 5, 326);  //Right line
		g.fillRect(25, 346, 326, 5); //Bottom line
		g.fillRect(25, 25, 5, 326);   //Left line
		
		//Main vertical lines
		g.fillRect(132, 30, 5, 316); //First line
		g.fillRect(239, 30, 5, 316); //Second line
		
		//Main horizontal lines		
		g.fillRect(30, 132, 316, 5); //First line
		g.fillRect(30, 239, 316, 5); //Second line
		
		//Sub vertical lines
		g.fillRect(62, 30, 3, 316);  //First line
		g.fillRect(97, 30, 3, 316);  //Second line
		g.fillRect(169, 30, 3, 316); //Third line
		g.fillRect(204, 30, 3, 316); //Fourth line
		g.fillRect(276, 30, 3, 316); //Fifth line
		g.fillRect(311, 30, 3, 316); //Sixth line
		
		//Sub horizontal lines	
		g.fillRect(30, 62, 316, 3);  //First line
		g.fillRect(30, 97, 316, 3);  //Second line
		g.fillRect(30, 169, 316, 3); //Third line
		g.fillRect(30, 204, 316, 3); //Fourth line
		g.fillRect(30, 276, 316, 3); //Fifth line
		g.fillRect(30, 311, 316, 3); //Sixth line
		
	}