CentOS Stream 10
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OpenJDK 21 : Install2025/02/12
 

Install OpenJDK 21.

[1] If you need only JRE, Install only [java-21-openjdk] package,
but if you need compiler, Install [java-21-openjdk-devel] package, too.
[root@dlp ~]#
dnf -y install java-21-openjdk java-21-openjdk-devel
[root@dlp ~]#
cat > /etc/profile.d/java.sh <<'EOF'
export JAVA_HOME=$(dirname $(dirname $(readlink $(readlink $(which java)))))
export PATH=$PATH:$JAVA_HOME/bin
EOF
[root@dlp ~]#
source /etc/profile.d/java.sh
[root@dlp ~]#
java -version 

openjdk version "21.0.5" 2024-10-15 LTS
OpenJDK Runtime Environment (Red_Hat-21.0.5.0.11-1) (build 21.0.5+11-LTS)
OpenJDK 64-Bit Server VM (Red_Hat-21.0.5.0.11-1) (build 21.0.5+11-LTS, mixed mode, sharing)
# verify to create test program

[root@dlp ~]# cat > java_test.java <<'EOF'
class java_test {
    public static void main(String[] args) {
        System.out.println("Hello Java World !");
    }
}
EOF
[root@dlp ~]#
javac java_test.java

[root@dlp ~]#
java java_test

Hello Java World !
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