[Java] OpenJDK 21 설치 (Ubuntu 20.04, repo에 없을 때)

1. 설치

wget https://download.java.net/java/GA/jdk21.0.1/415e3f918a1f4062a0074a2794853d0d/12/GPL/openjdk-21.0.1_linux-x64_bin.tar.gz
tar -xvf openjdk-21.0.1_linux-x64_bin.tar.gz
cd jdk-21.0.1/
sudo mkdir -p /usr/local/jdk-21.0.1/
sudo mv * /usr/local/jdk-21.0.1/

* 설치 파일 경로 확인 : https://jdk.java.net/21/

2. 환경 변수 설정

vi ~/.bashrc

export JAVA_HOME=/usr/local/jdk-21.0.1/
export PATH=$JAVA_HOME/bin:$PATH

3. 적용

source ~/.bashrc

4. 확인

java --version

$ java --version
openjdk 21.0.1 2023-10-17
OpenJDK Runtime Environment (build 21.0.1+12-29)
OpenJDK 64-Bit Server VM (build 21.0.1+12-29, mixed mode, sharing)

 

 

참고 자료

https://www.linuxcapable.com/how-to-install-openjdk-21-on-ubuntu-linux/