Installing, updating, and uninstalling IBM SDK, Java Technology Edition

You can install IBM® SDK, Java™ Technology Edition by using IBM Installation Manager Version 1.8.5 or later. Liberty can run with any compliant Java runtime environment (JRE) or Java software development kit (SDK).

• Install the Java SDK by using IBM Installation Manager.
  • Install the Java SDK by starting the Installation Manager GUI, clicking Install, and choosing an IBM SDK, Java Technology Edition offering.

    For information about installing by using the GUI, see Installing Liberty on distributed operating systems by using the GUI.

  • Install the Java SDK from the command line by running the imcl install command:

    imcl.exe install com.ibm.java.jdk.v17
      -repositories http://www.ibm.com/software/repositorymanager/com.ibm.java.jdk.v17
      -installationDirectory "C:\Program Files\IBM\WebSphere\Liberty"
      -secureStorageFile C:\IM\credential.store -masterPasswordFile C:\IM\master_password.txt

    For more information about installing from the command line, see Installing Liberty on distributed operating systems using the command line.

  • Install the Java SDK by using a response file:

    <?xml version="1.0" encoding="UTF-8"?>
    <agent-input clean="true" temporary="true">
    <server>
    <repository location="http://www.ibm.com/software/repositorymanager/com.ibm.java.jdk.v17" />
    </server>
    <install modify='false'>
    <offering id='com.ibm.java.jdk.v17'
      profile='WebSphere Application Server Liberty'
      features='com.ibm.sdk.17'/>
    </install>
    <profile id='WebSphere Application Server Liberty' installLocation='C:\Program Files\IBM\WebSphere\Liberty'>
     <data key='eclipseLocation' value='C:\Program Files\IBM\WebSphere\Liberty' /> 
     <data key='cic.selector.arch' value='x86_64' /> 
    </profile>
    </agent-input>

    For more information, see Installing Liberty on distributed operating systems using response files.

• Update the Java SDK.
  For common IBM Java SDKs, individual fixes are packaged as fix packs that have an updated time stamp. Content in the individual fixes for IBM SDK, Java Technology Edition is cumulative, so the fixes contain the fix pack content for the specified level plus any maintenance prior to the fix. Because individual fixes are packaged as fix packs, no interim fixes are provided, and all updates for the IBM Java SDKs are installed by following the method for installing and uninstalling fix packs described in Installing and uninstalling Liberty fix packs.

  You can install the updates directly from the online service repository, or you can download the update files from IBM Fix Central for a local installation.

• Uninstall the Java SDK by using IBM Installation Manager.
  • Uninstall the Java SDK by starting the Installation Manager GUI, clicking Uninstall, and selecting the IBM SDK, Java Technology Edition offering to uninstall.

    For more information about uninstalling by using the GUI, see Uninstalling Liberty from distributed operating systems using the GUI.

  • Uninstall the Java SDK from the command line by running the imcl uninstall command:

    imcl.exe uninstall com.ibm.java.jdk.v17
      -installationDirectory "C:\Program Files\IBM\WebSphere\Liberty"

    For more information about using the uninstall command, see Uninstalling Liberty from distributed operating systems using the command line.

  • Uninstall the Java SDK by using a response file:

    <?xml version="1.0" encoding="UTF-8"?>
    <agent-input clean='true' temporary='true'>
    <uninstall modify='false'>
    <offering id='com.ibm.java.jdk.v17' 
      profile='WebSphere Application Server Liberty'/>
    </uninstall>
    <profile id='WebSphere Application Server Liberty' 
      installLocation='C:\Program Files\IBM\WebSphere\Liberty'>
    </profile>
    </agent-input>

    For more information about uninstalling from a response file, see Uninstalling Liberty from distributed operating systems using response files.

What to do next

After you install, update, or uninstall a Java SDK, you can change the Java runtime environment that Liberty uses by setting the JAVA_HOME variable. Set the JAVA_HOME environment variable to the jre directory of the version that you want to use.

JAVA_HOME=C:path_to_Liberty\java\17.0

JAVA_HOME=path_to_Liberty/java/17.0