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import java.awt.*; import java.applet.*; import java.net.*; public class easyCam extends Applet { private Image myImage = null; private int startIndex = 1; private int endIndex = 9; private int currentIndex; private int sleepTime = 500; private String fileBase; private String fileExtension; private Thread timerThread; private volatile boolean noStopRequested; private MediaTracker tracker; public void init() { tracker = new MediaTracker(this); String strStartIndex = getParameter("STARTINDEX"); String strEndIndex = getParameter("ENDINDEX"); String strSleepTime = getParameter("MSDELAY"); fileBase = getParameter("FILEBASE"); fileExtension = getParameter("FILEEXT"); if (strStartIndex != null) startIndex = Integer.parseInt(strStartIndex); if (strEndIndex != null) endIndex = Integer.parseInt(strEndIndex); if (strSleepTime != null) sleepTime = Integer.parseInt(strSleepTime); startThread(); } private void startThread() { noStopRequested = true; Runnable r = new Runnable() { public void run() { runWork(); } }; timerThread = new Thread(r, "Timer"); timerThread.start(); } private void stopThread() { noStopRequested = false; timerThread.interrupt(); } private void runWork() { currentIndex = startIndex; boolean imageload = false; try { while ( noStopRequested ) { currentIndex = currentIndex + 1; if( currentIndex > endIndex ) currentIndex = startIndex; if( imageload == true ) { tracker.removeImage(myImage); myImage.flush(); myImage = null; } myImage = getImage(getDocumentBase(), fileBase + Integer.toString(currentIndex) + fileExtension); tracker.addImage(myImage, 0); tracker.waitForAll(); imageload = true; repaint(); Thread.sleep( sleepTime ); } } catch ( InterruptedException x ) { Thread.currentThread().interrupt(); } } public void paint(Graphics g) { update(g); } public void update(Graphics g) { if( myImage != null ) { g.drawImage(myImage, 0, 0, this); } } public void destroy() { stopThread(); myImage.flush(); myImage = null; } }