//MyFirstCoffee.java -- by tsaiwn@csie.nctu.edu.tw // ///////////// 猔種郎璶籔 Class  import java.applet.Applet; import java.awt.*; // Graphics, Font, Color, ... import java.awt.event.*; // event related public class MyFirstCoffee extends Applet implements MouseListener { // so that I can handle MouseEvent public static void main(String x[ ]) { //can be RUN as application Frame f = new Frame("Java"); // give me a Frame Object MyFirstCoffee me = new MyFirstCoffee( ); f.setSize(500,600); // do NOT forget to set Frame size f.add(me); // add me (Applet is Panel) into Frame (is Window) f.setVisible(true); me.init( ); // simulate Applet me.start( ); // .. }//main( public void update(Graphics ggg ) { System.out.println(" update kk=" + kk++); //ggg.clearRect(0, 0, getSize().width, getSize().height); paint(ggg); }//update( public void repaint( ) { super.repaint( ); System.out.println(" repaint kk=" + kk++); }// repaint( public void start( ) { System.out.println(" start kk=" + kk++); }//start public void stop( ) { System.out.println(" stop kk=" + kk++); }//start public void destroy( ) {System.out.println(" destroy kk=" + kk++);} public void init ( ) { //硄盽糶穦暗Ω try { s= getParameter("MSG"); // ъ 柑把计 MSGs }catch(Exception e) { System.out.println("No parameter MSG"); } System.out.println(" init kk=" + kk++); addMouseListener(this); // on Mouse Click will call functions in "this." }//init public void paint (Graphics g) { // 程璶 function, р硂Object礶ㄓ System.out.println("paint kk=" + kk++); if(s == null ) s= "Ha Ha Ha !\nHee Heeee!"; // appletviewerъぃ0,  ...(bug?  HTML⊿糶) g.clearRect(0, 0, getSize().width, getSize().height); g.setColor(Color.blue); // ┮Τ肅︹盽计琌糶 ! ┣玽? э g.setFont( new Font("Courier", Font.BOLD, 32) ); //setBackground(Color.green); //硂琌Appletmethod g.drawString("Hey You!", 44, 80 ); g.setColor(Color.red); // ┮Τ肅︹盽计琌糶 ! 跑计! g.drawRect(55, 160-32, 20*s.length() , 36); // red g.setColor(Color.yellow); g.fillRect(57, 160-32+2, 20*s.length()-4 , 36-4); /// g.setFont( new Font("Courier", Font.PLAIN, 24) ); g.drawString("s.length()="+s.length(), 60, 220); g.setFont( new Font("Courier", Font.BOLD, 32) ); g.setColor(Color.magenta); // magenta g.drawString(s, 60, 160 ); g.setFont( new Font("夹发砰", Font.BOLD, 32) ); g.setColor(Color.orange); // orange g.drawString(s, 60, 280 ); }// paint( // because implements MouseListener, we have to write these: public void mousePressed(java.awt.event.MouseEvent e){ } public void mouseReleased(java.awt.event.MouseEvent e){} public void mouseEntered(java.awt.event.MouseEvent e){} public void mouseExited(java.awt.event.MouseEvent e){} public void mouseClicked(MouseEvent e) { System.out.println(" kkk kkk kkk"); Color xx[ ] = {Color.red, Color.blue, Color.green}; myColor++; myColor %= xx.length; setBackground( xx[myColor] ); repaint( ); } // mouseClicked( // 菲公璶 Applet  Click Τ int myColor=0; int kk=0; String s; // global 跑计獽尿 function ノ }// class