数字签名为何速度变的很慢？（答就有分）

Question

up
加载慢可以理解，可是运行的时候慢有点想不通了，难道运行的时候还需要
从jar中读文件吗？对了，你的applet有很多类吗？如果是，那就可以理解
运行的时候为什么慢了，因为在加载类的时候，需要通过证书和签名才能打
开jar文件，所以没次new一个类的时候，就要做一次验证的操作。只是猜的：）

Answer 1

有１９个类，可是应该已经读到本机啦，真是不理解，我的html和没有数字签名时一样，只是加数字以后上传放到同一目录，不知道是否对的

Answer 2

提示下面，但APPLET可以运行，就是非常的慢，是否要改代码？
java.lang.IllegalArgumentException: Width (624) and height (0) cannot be <= 0 at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Unknown Source) at java.awt.image.BufferedImage.<init>(Unknown Source) at sun.awt.windows.WComponentPeer.print(Unknown Source) at sun.awt.windows.WCanvasPeer.print(Unknown Source) at java.awt.GraphicsCallback$PeerPrintCallback.run(Unknown Source) at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) at java.awt.Component.printAll(Unknown Source) at sun.awt.SunGraphicsCallback$PrintHeavyweightComponentsCallback.run(Unknown Source) at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) at sun.awt.SunGraphicsCallback.runComponents(Unknown Source) at sun.awt.windows.WPanelPeer.print(Unknown Source) at java.awt.GraphicsCallback$PeerPrintCallback.run(Unknown Source) at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) at java.awt.Component.printAll(Unknown Source) at sun.awt.SunGraphicsCallback$PrintHeavyweightComponentsCallback.run(Unknown Source) at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) at sun.awt.SunGraphicsCallback.runComponents(Unknown Source) at sun.awt.windows.WPanelPeer.print(Unknown Source) at java.awt.GraphicsCallback$PeerPrintCallback.run(Unknown Source) at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) at java.awt.Component.printAll(Unknown Source) at sun.awt.SunGraphicsCallback$PrintHeavyweightComponentsCallback.run(Unknown Source) at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) at sun.awt.SunGraphicsCallback.runComponents(Unknown Source) at sun.awt.windows.WPanelPeer.print(Unknown Source) at java.awt.GraphicsCallback$PeerPrintCallback.run(Unknown Source) at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) at java.awt.Component.printAll(Unknown Source) at java.awt.GraphicsCallback$PrintAllCallback.run(Unknown Source) at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) at sun.awt.SunGraphicsCallback.runComponents(Unknown Source) at java.awt.Container.printComponents(Unknown Source) at com..lIlIIIIIllIIIIII.paint(Unknown Source:2964) at com.lIlIIIIIllIIIIII.update(Unknown Source:2955) at sun.awt.RepaintArea.paint(Unknown Source) at sun.awt.windows.WComponentPeer.handleEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source)