The snake body is now replaced by directly painting on the JPanel. The redundant snake pictures are deleted.

Below are the code implementation of painting the snake:

//set its head DARK_GRAY and body Black
protected void drawSnake(Graphics snake) {
		
		for (int i = 0; i < length; i++) {
			if (i == 0) {
				snake.setColor(Color.DARK_GRAY);
			} else {
				snake.setColor(Color.BLACK);
			}
			snake.fillRect(coordinate.get(i).get(SConstant.SC_COORDINATE_XPOS_KEY),coordinate.get(i).get(SConstant.SC_COORDINATE_YPOS_KEY), SConstant.SC_DEFAULT_NODE_SIZE,SConstant.SC_DEFAULT_NODE_SIZE);
		}
		
		drawInformation(snake);
		
}