Senin, 12 Maret 2012
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Animasi Text java Applet



Berikut ini adalah contoh animasi text dengan applet

1. Copykan script berikut ini :
/*
 * Copyright (c) 2003 Sun Microsystems, Inc. All  Rights Reserved.
*/
import java.applet.Applet;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

/**
 *
 * @author Otozt
 */
public class NervousText extends Applet implements Runnable, MouseListener {
    String banner;  // The text to be displayed
    char bannerChars[];  // The same text as an array of characters
    char attributes[];  // Character attributes ('^' for superscript)
    Thread runner = null; // The thread that is displaying the text
    boolean threadSuspended; // True when thread suspended (via mouse click)

    static final int REGULAR_WD = 15;
    static final int REGULAR_HT = 36;
    static final int SMALL_WD = 12;
    static final int SMALL_HT = 24;

    Font regularFont = new Font("Serif", Font.BOLD, REGULAR_HT);
    Font smallFont = new Font("Serif", Font.BOLD, SMALL_HT);

    public void init() {
 banner = getParameter("text");
 if (banner == null) {
     banner = "www.otozt.blogspot.com";
 }

        int bannerLength = banner.length();
 StringBuffer bc = new StringBuffer(bannerLength);
 StringBuffer attrs = new StringBuffer(bannerLength);
 int wd = 0;
 for (int i = 0; i < bannerLength; i++) {
     char c = banner.charAt(i);
     char a = 0;
     if (c == '^') {
  i++;
  if (i < bannerLength) {
      c = banner.charAt(i);
      a = '^';
      wd += SMALL_WD - REGULAR_WD;
  } else {
      break;
  }
     }
     bc.append(c);
     attrs.append(a);
     wd += REGULAR_WD;
 }

 bannerLength = bc.length();
 bannerChars =  new char[bannerLength];
 attributes = new char[bannerLength];
 bc.getChars(0, bannerLength, bannerChars, 0);
 attrs.getChars(0, bannerLength, attributes, 0);

        threadSuspended = false;
 resize(wd + 10, 50);
 addMouseListener(this);
    }

    public void destroy() {
        removeMouseListener(this);
    }

    public void start() {
        runner = new Thread(this);
        runner.start();
    }

    public synchronized void stop() {
 runner = null;
        if (threadSuspended) {
            threadSuspended = false;
            notify();
        }
    }

    public void run() {
        Thread me = Thread.currentThread();
        while (runner == me) {
            try {
                Thread.sleep(100);
                synchronized(this) {
                    while (threadSuspended) {
                        wait();
                    }
                }
            } catch (InterruptedException e){
            }
            repaint();
        }
    }

    public void paint(Graphics g) {
 int length = bannerChars.length;
        for (int i = 0, x = 0; i < length; i++) {
     int wd, ht;
     if (attributes[i] == '^') {
  wd = SMALL_WD;
  ht = SMALL_HT;
  g.setFont(smallFont);
     } else {
  wd = REGULAR_WD;
  ht = REGULAR_HT;
  g.setFont(regularFont);
     }
            int px = (int) (10 * Math.random() + x);
            int py = (int) (10 * Math.random() + ht);
            g.drawChars(bannerChars, i, 1, px, py);
     x += wd;
 }
    }

    public synchronized void mousePressed(MouseEvent e) {
        e.consume();
        threadSuspended = !threadSuspended;
        if (!threadSuspended)
            notify();
    }

    public void mouseReleased(MouseEvent e) {
    }

    public void mouseEntered(MouseEvent e) {
    }

    public void mouseExited(MouseEvent e) {
    }

    public void mouseClicked(MouseEvent e) {
    }

    public String getAppletInfo() {
        return "Title: NervousText\nAuthor: Daniel Wyszynski\nDisplays a text banner that jitters.";
    }

    public String[][] getParameterInfo() {
        String pinfo[][] = {
            {"text", "string", "Text to display"},
        };
        return pinfo;
    }
}
2. Kemudian run filenya maka akan tampil animasi seperti berikut :
 
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