推荐一款Java反编译器，比较好用

This is README file for Java Decompiler. JD home page: http://java.decompiler.free.fr Copyright 2008 Emmanuel Dupuy. 1. Installation. No installation and no setup are required. 2. Description JD-GUI is a standalone graphical utility that displays Java source codes of ".class" files. You can browse the reconstructed source code with the JD-GUI for instant access to methods and fields. JD-GUI is free for non-commercial use. This means that JD-GUI shall not be included or embedded into commercial software products. Nevertheless, JD-GUI may be freely used for personal needs in a commercial or non-commercial environments. 3. How to use JD-GUI For example, to decompile "Object.class", you can : - execute the following command line : "jd-gui.exe Object.class". - select "Open File ..." in "File" menu and browse to "Object.class". - drag and drop "Object.class" onto "jd-gui". 4. Changes http://java.decompiler.free.fr/jd-gui/changes/ 5. Uninstallation 5.1 Windows: Delete "jd-gui.exe" and "jd-gui.cfg". 5.2 Linux: Delete "jd-gui" application file and "jd-gui.cfg". 5.3 OSX: Drag and drop "JD-GUI" application to the trash. 6. Network & Security JD-GUI includes a feature to inform you of the availability of new versions. It executes the HTTP GET request "http://java.decompiler.free.fr/jd-gui/ update/" without any parameters neither cookies to download update data. No personal information is transmitted. You can check network activities of JD-GUI with "tcpdump" for example ... If you decide to block network acces of JD-GUI, all its features remains operational, except the auto-update checking feature, of course. 7. Disclaimer Copyright 2008-2009 Emmanuel Dupuy. THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.