kaffe是一个java虚拟机的源代码。里面包含了一些java例程和标准的java包。

				/*				 * Java comm library component.				 *				 * Copyright (c) 1998				 *      Transvirtual Technologies, Inc.  All rights reserved.				 *				 * See the file "license.terms" for information on usage and redistribution				 * of this file.				 */								package javax.comm;								import java.util.TooManyListenersException;								public abstract class ParallelPort				  extends CommPort {								public static final int LPT_MODE_ANY = 1;				public static final int LPT_MODE_SPP = 2;				public static final int LPT_MODE_PS2 = 3;				public static final int LPT_MODE_EPP = 4;				public static final int LPT_MODE_ECP = 5;				public static final int LPT_MODE_NIBBLE = 6;								public ParallelPort() {				}								public abstract void addEventListener(ParallelPortEventListener lsnr) throws TooManyListenersException;				public abstract void removeEventListener();				public abstract void notifyOnError(boolean notify);				public abstract void notifyOnBuffer(boolean notify);				public abstract int getOutputBufferFree();				public abstract boolean isPaperOut();				public abstract boolean isPrinterBusy();				public abstract boolean isPrinterSelected();				public abstract boolean isPrinterTimedOut();				public abstract boolean isPrinterError();				public abstract void restart();				public abstract void suspend();				public abstract int getMode();				public abstract int setMode(int mode) throws UnsupportedCommOperationException;								}