dugme.addMouseListener(new MouseAdapter() { 

	@Override 
	public void mousePressed(MouseEvent e) { 

		if(e.getButton() == MouseEvent.BUTTON1) { 
			// levi klik 
		} 

		if(e.getButton() == MouseEvent.BUTTON2) { 
			// klik na scroll 
		} 

		if(e.getButton() == MouseEvent.BUTTON3) { 
			// desni klik 
		} 

	} 

});