OpenJDK 11 : Install2024/08/23 |
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Install OpenJDK 11. |
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| [1] | Install OpenJDK 11 and run a test program. |
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root@dlp:~ #
root@dlp:~ # pkg install -y openjdk11 mount -t fdescfs fdesc /dev/fd root@dlp:~ # mount -t procfs proc /proc
root@dlp:~ # cat >> /etc/fstab <<'EOF'
fdesc /dev/fd fdescfs rw 0 0
proc /proc procfs rw 0 0
EOF
root@dlp:~ # java -version openjdk version "11.0.24" 2024-07-16 OpenJDK Runtime Environment (build 11.0.24+8-1) OpenJDK 64-Bit Server VM (build 11.0.24+8-1, mixed mode) # 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 ! |
| [2] | If you installed multiple version of Java from official repository, it's possible to specify the version with [JAVA_VERSION] env. |
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root@dlp:~ # ll -d /usr/local/openjdk* drwxr-xr-x 10 root wheel uarch 11 Aug 23 12:45 /usr/local/openjdk11/ drwxr-xr-x 10 root wheel uarch 11 Aug 23 12:59 /usr/local/openjdk17/ drwxr-xr-x 10 root wheel uarch 11 Aug 23 13:01 /usr/local/openjdk21/ drwxr-xr-x 9 root wheel uarch 14 Aug 23 12:41 /usr/local/openjdk8/root@dlp:~ # java -version openjdk version "21.0.3" 2024-04-16 OpenJDK Runtime Environment (build 21.0.3+9-1) OpenJDK 64-Bit Server VM (build 21.0.3+9-1, mixed mode, sharing)root@dlp:~ # JAVA_VERSION=8 java -version openjdk version "1.8.0_412" OpenJDK Runtime Environment (build 1.8.0_412-b08) OpenJDK 64-Bit Server VM (build 25.412-b08, mixed mode)root@dlp:~ # JAVA_VERSION=17 javac -version javac 17.0.11 |
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