Java 遊戲程式設計：基礎篇 (Java Game Programming: The Basic)

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用Java寫遊戲的第一步驟就是要把東西在螢幕上顯示出來，那麼在Java裏頭有哪些類別可以用呢？答案是好多耶，像是AWT中的Frame，Swing中的JFrame、等。若是用Netbeans IDE的話，可快速拉好一些簡單的介面，所以本文選用Netbeans IDE來使用。
The first step in creating a Java game is showing something on the screen. How many classes can we use in Java? There are so many API. For example, Frame in AWT and JFrame in Swing.  However, we can create the game framework easily by Netbeans IDE.

遊戲的主要視窗為JForm、遊戲的畫面放在JPanel裡，程式碼的框架如下：
The main window class in a Java game application is usually a JForm. The game elements are on JPanel. And the code prototype are the following:

	package holan.tw;
	import java.awt.Graphics;
	import java.awt.Graphics2D;
	public class GameBoard extends javax.swing.JPanel {
	public GameBoard() {
	}
	@Override
	public void paintComponent(Graphics g) {
	super.paintComponent(g);
	Graphics2D g2d = (Graphics2D) g;
	g2d.drawString("Hello Java Game Developer!", 50, 50);
	}
	}

view raw GameBoard.java hosted with ❤ by GitHub

	package holan.tw;
	import javax.swing.JFrame;
	public class GameForm extends JFrame {
	public GameForm() {
	createUI();
	}
	private void createUI() {
	add(new GameBoard());
	setTitle("GameTutor");
	setSize(330, 330);
	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	setLocationRelativeTo(null);
	}
	public static void main(String args[]) {
	/* Create and display the form */
	java.awt.EventQueue.invokeLater(new Runnable() {
	public void run() {
	new GameForm().setVisible(true);
	}
	});
	}
	}

view raw GameForm.java hosted with ❤ by GitHub

執行結果如下，只是顯示文字在畫面上。
The result is displaying some text on the screen.