How To Specify A Specific JDK In Pipeline?

Issue

A Pipeline job that requires a specific JDK.

Environment

  • Jenkins
  • Pipeline plugin

Resolution

Use the env.JAVA_HOME environment variable to specify the JDK to use as shown in the Pipeline snippet below:

node {
  jdk = tool name: 'JDK17'
  env.JAVA_HOME = "${jdk}"

  echo "jdk installation path is: ${jdk}"

  // next 2 are equivalents
  sh "${jdk}/bin/java -version"

  // note that simple quote strings are not evaluated by Groovy
  // substitution is done by shell script using environment
  sh '$JAVA_HOME/bin/java -version'
}
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