Verifying that the JAVA_HOME Environment Variable Is Set

To determine the JAVA_HOME value in DOS, at the command line, type echo %JAVA_HOME%.

To determine the JAVA_HOME value in a UNIX shell (SH, BASH, or KSH), at the UNIX prompt, type echo $JAVA_HOME.

The steps described in the following procedure are for Windows 7. The exact steps may differ, depending on your Windows operating system.

1. Open the Control Panel.

2. Open the System window.

3. Click Advanced system settingsin the navigation pane.

   The System Properties dialog box opens.

4. Click Environment Variables on the Advanced tab.

5. Under System Variables, click New.

   The New System Variable dialog box opens.

6. In the Variable name box, type JAVA_HOME.

7. In the Variable Value box, type the full Java install directory path, and click OK.

8. Locate the Path variable under System Variables, click Edit.

   The Edit System Variable dialog box opens.

9. In the Variable Value box, add %JAVA_HOME%\bin to the existing value and click OK.

1. Add the the JAVA_HOME parameter to System Variables.

   For detailed instruction, see Setting the JAVA_HOME Value in Windows section above.

2. (Optional, but recommended) Set the .bash_profile file.

   1. Open the <Cygwin_HOME>/.bash_profile file in a text editor.

   2. Add the following to the end of the file:

      export JAVA_HOME=/cygdrive/<Drive_Letter>/<JDK_HOME>

      export PATH=$JAVA_HOME/bin:$PATH

   3. Save the .bash_profile file and quit.

To set the value of JAVA_HOME in DOS, run the following:

set JAVA_HOME=<JDK_Install_Directory>

To set the value of JAVA_HOME in UNIX using the Bourne shell (SH, BASH, or KSH), run the following:

JAVA_HOME=<JDK_Install_Directory>; export JAVA_HOME