Java 17
1. To execute Java 8 jar via Java 17, add these parameters -
/path/to/java17home/bin/java -Dsun.misc.URLClassPath.disableJarChecking=true --add-opens jdk.naming.rmi/com.sun.jndi.rmi.registry=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/sun.security.action=ALL-UNNAMED --add-opens java.base/sun.net=ALL-UNNAMED
2. Add ?useSSL=false to mysql 5 jdbc jar.
3. To install Oracle JDK (and not open-jdk) on Ubuntu, first download and install the .deb file and then execute the below command to add java in System -
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk-19/bin/javac" 1
sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk-19/bin/java" 1
Change the jdk path according to your version. After then set the java 19's javac and java binaries version using the below command. Select the java 19 option.
sudo update-alternatives --config javac
The output will be like
There are 2 choices for the alternative javac (providing /usr/bin/javac).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/lib/jvm/java-8-openjdk-amd64/bin/javac 1081 auto mode
1 /usr/lib/jvm/java-8-openjdk-amd64/bin/javac 1081 manual mode
2 /usr/lib/jvm/jdk-19/bin/javac 1 manual mode
Press <enter> to keep the current choice[*], or type selection number: 2
update-alternatives: using /usr/lib/jvm/jdk-19/bin/javac to provide /usr/bin/javac (javac) in manual mode
Similarly update java
sudo update-alternatives --config java