import java.awt.*; //windows, buttons, etc. need the "SWING" packages
import java.awt.event.*; //needed for the "ActionListener"
import javax.swing.*; //windows, buttons, etc. need the "SWING" packages

/**
 * Class describing the creation of a simple window and a few object
 * components placed on.<br>
 * Attributes: Title,Size,Close function,Visible or not<br>
 * Additionally it shows simple ways how to add components to the window.<br>
 * Free to use, copy, change or make CREAM out of it!<br>
 * Prequisits: Basic knowlege of objects, classes & methods in Java
 *
 * @author Andreas Mastichis
 * @version 0.1
 */
public class SimpleWindow extends JFrame {

	/**
	 * Constructor of the Window class
	 */
	public SimpleWindow() {

		/**
		 * WINDOW CREATION
		 */
		// Create title for window
		super("My window title...");

		// Set the initial size of window: width, height
		setSize(300, 200);

		// Set the CLOSE operation of the window (X)
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		// Set if the window is visible or not
		setVisible(true);

		/**
		 * CONTAINER CREATION
		 */
		// Create a Java CONTAINER, name: "contentArea"
		// This will be the pane of the window...
		Container contentArea = getContentPane();
		contentArea.setBackground(Color.lightGray);

		/**
		 * LAYOUT CREATION This layout uses the Java "Flow" layout manager. This
		 * means that it "flows" the components from left to right and when the
		 * a component doesn't fit in a line of the "window", it is pushed to
		 * the next line below (this depends on the window size). NOTE:
		 */
		// Create a Java LAYOUT MANAGER, name: "layoutManagerA"
		// for components to be placed on
		FlowLayout layoutManagerA = new FlowLayout();

		/**
		 * CONNECT CONTAINER with LAYOUT (must be created below the layout
		 * representing it)
		 */
		contentArea.setLayout(layoutManagerA);

		/**
		 * LABEL CREATION
		 */
		// Create a Java LABEL, name: "nameLabel", caption: "Name: "
		JLabel nameLabel = new JLabel("Name: ");
		contentArea.add(nameLabel);

		/**
		 * TEXTFIELD/BOX CREATION (create after the label representing the
		 * textbox)
		 */
		// Create a Java TEXTFIELD, name: "nameField", caption show: "enter name
		// here"
		JTextField nameField = new JTextField("enter name here", 15);
		contentArea.add(nameField);

		/**
		 * COMBOBOX CREATION
		 */
		// Create a Java COMBOBOX, name: "comboCity"
		JComboBox comboCity = new JComboBox();
		comboCity.addItem("Nicosia");
		comboCity.addItem("Limassol");
		comboCity.addItem("Larnaca");
		comboCity.addItem("Paphos");
		// Add the COMBOBOX: "comboCity" to the CONTAINER: "contentArea"
		contentArea.add(comboCity);

		/**
		 * TEXTAREA CREATION
		 */
		// Create a Java TEXTAREA, name: "address", caption show: "enter address
		// here",
		// rows: 4 lines, colums: 20 characters width
		JTextArea address = new JTextArea("enter address here", 4, 20);
		// Add the TEXTAREA: "address" to the CONTAINER: "contentArea"
		contentArea.add(address);

		/**
		 * SCROLLPANE CREATION (must be directly below the relevant component to
		 * be scrolled)
		 */
		// Create a Java SCROLLPANE, name: "addressScroll", vertical: always
		// show,
		// horizontal: always show
		JScrollPane addressScroll = new JScrollPane(address,
				JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
				JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
		// Add the SCROLLPANE: "addressScroll" to the CONTAINER: "contentArea"
		contentArea.add(addressScroll);

		/**
		 * BUTTON CREATION
		 */
		// Create a Java BUTTON, name: "closeButton", caption: "Close"
		JButton closeButton = new JButton("Close");
		// Add Java ACTIONLISTENER: "CloseHandler" (to "handle" the event)
		closeButton.addActionListener(new CloseHandler());
		// Add BUTTON: "closeButton" to CONTAINER: "contentArea"
		contentArea.add(closeButton);

		// Apply/show the contents (buttons,textBoxes,etc.)
		// which are binded to the CONTAINER specified here
		setContentPane(contentArea);
	}

	/**
	 * ACTIONLISTENER HANDLER -CLASS (create a method to "capture" the
	 * "closeButton" event)
	 */
	class CloseHandler implements ActionListener {

		public void actionPerformed(ActionEvent e) {
			// Exit the program
			System.exit(0);
		}
	}

	/**
	 * MAIN METHOD CREATION
	 */
	public static void main(String[] args) {

		// Create an instance of the widow, so it can be displayed
		Window simpleWindow = new SimpleWindow();
	}
}