พื้นฐาน Form การสร้าง Dialog MessageBox บน Java GUI เพื่อโต้ตอบกับผู้ใช้

		JOptionPane.showMessageDialog(null,
				"Eggs are not supposed to be green.");

		JOptionPane.showMessageDialog(null,
			    "Eggs are not supposed to be green.",
			    "Inane warning",
			    JOptionPane.WARNING_MESSAGE);

		JOptionPane.showMessageDialog(null,
			    "Eggs are not supposed to be green.",
			    "Inane error",
			    JOptionPane.ERROR_MESSAGE);

		JOptionPane.showMessageDialog(null,
			    "Eggs are not supposed to be green.",
			    "A plain message",
			    JOptionPane.PLAIN_MESSAGE);

		final ImageIcon icon = new ImageIcon(getClass().getResource("icon.gif"))
		JOptionPane.showMessageDialog(null,
			    "Eggs are not supposed to be green.",
			    "Inane custom dialog",
			    JOptionPane.INFORMATION_MESSAGE,
			    icon);

		Object[] options = { "Yes, please", "No, thanks", "No eggs, no ham!" };
		int n = JOptionPane.showOptionDialog(null,
				"Would you like some green eggs to go " + "with that ham?",
				"A Silly Question", JOptionPane.YES_NO_CANCEL_OPTION,
				JOptionPane.QUESTION_MESSAGE, null, options, options[2]);
		System.out.print(n); // Use n for response

		int n = JOptionPane.showConfirmDialog(
			    null,
			    "Would you like green eggs and ham?",
			    "An Inane Question",
			    JOptionPane.YES_NO_OPTION);
		System.out.print(n); // Use n for response

		Object[] options = {"Yes, please","No way!"};
		int n = JOptionPane.showOptionDialog(null,
			"Would you like green eggs and ham?",
			"A Silly Question",
			JOptionPane.YES_NO_OPTION,
			JOptionPane.QUESTION_MESSAGE,
			null,     //do not use a custom Icon
			options,  //the titles of buttons
			options[0]); //default button title
		System.out.print(n); // Use n for response

		Object[] possibilities = {"ham", "spam", "yam"};
		String s = (String)JOptionPane.showInputDialog(
		                    null,
		                    "Complete the sentence:\n"
		                    + "\"Green eggs and...\"",
		                    "Customized Dialog",
		                    JOptionPane.PLAIN_MESSAGE,
		                    null,
		                    possibilities,
		                    "ham");

		//If a string was returned, say so.
		if ((s != null) && (s.length() > 0)) {
		    System.out.print("Green eggs and... " + s + "!");
		}

		String s = (String)JOptionPane.showInputDialog(
		                    null,
		                    "Complete the sentence:\n"
		                    + "\"Input your name?\"",
		                    "Customized Dialog",
		                    JOptionPane.PLAIN_MESSAGE,
		                    null,
		                    null,
		                    "Name");

		//If a string was returned, say so.
		if ((s != null) && (s.length() > 0)) {
		    System.out.print("Hello... " + s + "!");
		}