Java Implementation

After 2024 Ubuntu (VM) migration, the default JDK is Java 11. Hwoever, Java 8 (JRE) is used because:

• WebLexBuild was developed in Java 8. We experienced issues when it ran in Java 11 (encodeing issue).
• LexBuild was developed and build in Java 8
• LexBuild uses lvg2019.jar, which was build in Java 8

• Tomcat must run in Java 8

The Java is briefly described as follows:

• installation and configuration:
  • /etc/alternatives/java
  • /usr/lib/jvm/default-java

  • /usr/lib/jvm/java-11-openjdk-amd64/bin/java
  • /usr/lib/jvm/java-8-openjdk-amd64/bin/java

  • set $JAVA_HOME in ~/.cshrc
• commands:
  • where: which java
  • version: java -version
  • switch version: sudo update-alternatives --config java