1. 자동 설치 - $ sudo apt update - $ sudo apt install openjdk- 17 -jdk 2. 설치 경로 - default : /usr/lib/jvm/java- [버전] -openjdk-amd64/bin/java 3. 환경 변수 등록 - $ sudo vi /etc/environment PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin" JAVA_HOME="/usr/lib/jvm/java-17-openjdk-amd64" 4. 확인 - $ source /etc/environment - $ echo $JAVA_HOME