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Windows

Install new Java version

Follow instructions to install Java: Install Java

Update JAVA_HOME

If you have set the environment variable JAVA_HOME, check whether this needs updating. Commonly this will be automatically updated by the installation process.

Update service wrapper

Find the file jvm.dll in the Java installation.

  • Java 8: this will be in JAVA_HOME\jre\bin\server\jvm.dll

  • Java 11: this will be at JAVA_HOME\bin\server\jvm.dll

Open the tomcat configuration window:

  • Start the program Monitor Tomcat

If this is not available from the start menu, run the program JAVA_HOME\bin\Tomcat9w.exe

./jdk-11.0.13.8-hotspot/bin/client/jvm.dll
./jdk-11.0.13.8-hotspot/bin/server/jvm.dll
./jdk-8.0.312.7-hotspot/jre/bin/server/jvm.dl

Remove old version

Linux

Install new Java version

Follow instructions to install Java: Install Java

Update JAVA_HOME

If you have followed the standard installation instructions, you have already done this.

Update service script

cwelford@PF-000151:/mnt/c/Program Files/Eclipse Adoptium$ find . -name jvm.dll -print
./jdk-11.0.13.8-hotspot/bin/client/jvm.dll
./jdk-11.0.13.8-hotspot/bin/server/jvm.dll
./jdk-8.0.312.7-hotspot/jre/bin/server/jvm.dl

Remove old version

Delete the previous installation

cd /opt/jdk
sudo rm -r [PREVIOUS VERSION]

For example

sudo rm -r /opt/jdk/jdk-11.0.13+8

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