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Install Java

Install Java if it hasn't been already installed on the system. Otherwise, you can skip this section and proceed to section: Install Java Crypthography Extension. If your have previously updated the JCE policies, proceed to section: Install an application server.

You can choose between installing just a JRE (Java Runtime Environment) or a JDK (Java Development Kit). The JRE is sufficient for the applications to work correctly. However, if you wish to install a JVM monitoring tool, having a JDK installed is recommended.

Perform the following steps:

  1. Download a JRE/JDK
    • The latest JRE from Oracle can be downloaded from here
    • he latest JDK from Oracle can be downloaded from here
  2. Run the Java installer.
  3. Follow the installation wizard steps. At one point, you will be asked to choose a directory to install to. This will be your JAVA_HOME. If you don't change the default installation directory, Java will be probably installed at: C:\Program Files\Java. Complete the installation.
  4. Verify that the JAVA_HOME environment variable has been set. In order to achieve that, run the command prompt and enter the following command:
    echo %JAVA_HOME%

    If nothing is displayed or if you don't see a path leading to the JRE/JDK installation directory, then you will need to set the JAVA_HOME variable manually. The steps for accomplishing this are described below:

    • Select Start -> Computer -> System Properties -> Advanced system settings > Environment Variables -> System Variables
    • Search for the JAVA_HOME variable. If it doesn't exist, create it. The value of the variable should be the JRE installation path. Thus, something like this: “C:\Program Files\Java\jre”

    To make sure that Windows can find the Java interpreter, modify the PATH variable as well:

    Select Start -> Computer -> System Properties -> Advanced system settings -> Environment Variables -> System variables -> PATH

  5. Prepend the following string to the beginning of the PATH variable. (Note the ";" after bin)
    C:\Program Files\Java\jre\bin;
  6. Check that the PATH variable has been updated correctly. Open the command prompt and type the following command:
    java -version

    The output should be the Java version installed.

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