OpenJDK21

Install from Adoptium

https://adoptium.net/temurin/releases
https://github.com/adoptium/temurin21-binaries/releases/tag/jdk-21.0.7%2B6

   1 cd ~
   2 wget https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21.0.7%2B6/OpenJDK21U-jdk_x64_linux_hotspot_21.0.7_6.tar.gz
   3 tar tvzf OpenJDK21U-jdk_x64_linux_hotspot_21.0.7_6.tar.gz 
   4 tar xvzf OpenJDK21U-jdk_x64_linux_hotspot_21.0.7_6.tar.gz 
   5 nano ~/.bashrc
   6 JAVA_HOME=/home/vitor/jdk-21.0.7+6/
   7 MAVEN_HOME=/home/vitor/apache-maven-3.8.6/
   8 PATH=$JAVA_HOME/bin/:$PATH:$MAVEN_HOME/bin/
   9 # reload bashrc
  10 # . ~/bashrc 
  11

Records

https://openjdk.org/jeps/395

Introduced in release 16.

To model data as data. Easy and concise manner to declare data-carrier classes that by default make their data immutable. Can be described as nominal tuples.

   1   record Point(int x, int y) { }