1. 首先需要设置java_home，至于设置方法已经很多了。一般来说，只要安装了Java虚拟机，就能自动设置。可以通过Java -version来查看当前Java的版本。如果能看到当前的版本好，则说明设置是成功的。
- C:/Documents and Settings/YUCHENGHU>java -version
- java version "1.6.0_11"
- Java(TM) SE Runtime Environment (build 1.6.0_11-b03)
- Java HotSpot(TM) Client VM (build 11.0-b16, mixed mode, sharing)
- C:/Documents and Settings/YUCHENGHU>
2. 设置DERBY_HOME环境变量，同时需要将%DERBY_HOME%/bin添加到PATH变量中。
如果输入sysinfo.bat后，提示输入了不可识别的命令，则说明这一步没有设置正确，可以在系统 变量中检测。
- C:/Documents and Settings/YUCHENGHU>sysinfo.bat
- 'sysinfo.bat' is not recognized as an internal or external command,
- operable program or batch file.
- C:/Documents and Settings/YUCHENGHU>
可以输入命令echo %DERBY_HOME%来校验是否正确的设置了DERBY_HOME变量，如果能正确输出Derby 所在的路径，则说明已经正确的设置了DERBY_HOME变量，否则没有目录输出。
- C:/Documents and Settings/YUCHENGHU>echo %DERBY_HOME%
- %DERBY_HOME%
- C:/Documents and Settings/YUCHENGHU>
下图是未设置DERBY_HOME变量的输出
添加DERBY_HOME变量
同时还需要在系统的PATH变量中添加：%DERBY_HOME%/bin;
当你完成上述步骤后，重新打开一个控制台，输入echo %DERBY_HOME%应该就可以Derby所在目录的输出了
- C:/Documents and Settings/YUCHENGHU>echo %DERBY_HOME%
- D:/Dkits/derby
- C:/Documents and Settings/YUCHENGHU>
- C:/Documents and Settings/YUCHENGHU>sysinfo
- ------------------ Java Information ------------------
- Java Version: 1.6.0_11
- Java Vendor: Sun Microsystems Inc.
- Java home: C:/Program Files/Java/jdk1.6.0_11/jre
- Java classpath: D:/workdir/hawebs/resources/hadocs/projects/derby/trunk/DITA-OT
- 1.5/lib/saxon9he.jar;D:/Dkits/derby/lib/derby.jar;D:/Dkits/derby/lib/derbynet.ja
- r;D:/Dkits/derby/lib/derbyclient.jar;D:/Dkits/derby/lib/derbytools.jar
- OS name: Windows XP
- OS architecture: x86
- OS version: 5.1
- Java user name: YUCHENGHU
- Java user home: C:/Documents and Settings/YUCHENGHU
- Java user dir: C:/Documents and Settings/YUCHENGHU
- java.specification.name: Java Platform API Specification
- java.specification.version: 1.6
- --------- Derby Information --------
- JRE - JDBC: Java SE 6 - JDBC 4.0
- [D:/Dkits/derby/lib/derby.jar] 10.5.3.0 - (802917)
- [D:/Dkits/derby/lib/derbytools.jar] 10.5.3.0 - (802917)
- [D:/Dkits/derby/lib/derbynet.jar] 10.5.3.0 - (802917)
- [D:/Dkits/derby/lib/derbyclient.jar] 10.5.3.0 - (802917)
- ------------------------------------------------------
- ----------------- Locale Information -----------------
- Current Locale : [English/United States [en_US]]
- Found support for locale: [cs]
- version: 10.5.3.0 - (802917)
- Found support for locale: [de_DE]
- version: 10.5.3.0 - (802917)
- Found support for locale: [es]
- version: 10.5.3.0 - (802917)
- Found support for locale: [fr]
- version: 10.5.3.0 - (802917)
- Found support for locale: [hu]
- version: 10.5.3.0 - (802917)
- Found support for locale: [it]
- version: 10.5.3.0 - (802917)
- Found support for locale: [ja_JP]
- version: 10.5.3.0 - (802917)
- Found support for locale: [ko_KR]
- version: 10.5.3.0 - (802917)
- Found support for locale: [pl]
- version: 10.5.3.0 - (802917)
- Found support for locale: [pt_BR]
- version: 10.5.3.0 - (802917)
- Found support for locale: [ru]
- version: 10.5.3.0 - (802917)
- Found support for locale: [zh_CN]
- version: 10.5.3.0 - (802917)
- Found support for locale: [zh_TW]
- version: 10.5.3.0 - (802917)
- ------------------------------------------------------
- C:/Documents and Settings/YUCHENGHU>
至此，Derby数据库环境已经在你Windows下配置完成了。
