Create or set the
JAVA_HOME
environment variable
to point to the location where the JDK is installed.
12.1.1 Set the JAVA_HOME environment variable (Windows)
Select
Start
>
Control Panel
>
System
.
Click the
Advanced
tab.
Click
Environment Variables
and, under System Variables,
click
New
.
In the
New System Variable
box, type
JAVA_HOME
as
the variable name and enter the directory where you installed the
JDK. This directory is the directory that contains the /bin subdirectory.
For example, type the following path:
C:\Program Files\Java\jdk1.7.0_21
12.1.2 Set the PATH environment variable (Windows)
Select
Start
>
Control Panel
>
System
.
Click the
Advanced
tab and click
Environment Variables
.
In the System Variables area, select the
PATH
variable
and then click
Edit
.
Append the following text to the beginning of the variable
value:
%JAVA_HOME%\bin;
12.1.3 Set the JAVA_HOME environment (Linux and Solaris)
It is recommended that you set the
JAVA_HOME
variable
for Bourne and Bash as shown in the following example:
JAVA_HOME=/usr/java
export JAVA_HOME
12.1.4 Set the PATH environment variable (Linux and Solaris)
Set the
PATH
variable for Bourne
and Bash as shown in the following example:
PATH=$JAVA_HOME/bin:$PATH
export PATH
12.1.5 Verify JAVA_HOME environment variable setting (Windows, Linux, or Solaris)
(Optional) Open a command prompt and run the following
command:
java -version
The command returns the Java version installed on your system.
