RedHat 계열 리눅스에서 default jdk 버전 변경 방법

JDK 8 -> JDK 11 변경 방법 (RedHat)

1. Install JDK 11

sudo dnf install java-11-openjdk-dev

2. 현재 환경 변수가 JDK 8을 바라보고 있음

java -version
openjdk version "1.8.0_332"
OpenJDK Runtime Environment (build 1.8.0_332-b09)
OpenJDK 64-Bit Server VM (build 25.332-b09, mixed mode)

 

3. JDK 11 -> JDK8 버전 변경 (default java version 변경)

sudo /usr/sbin/alternatives --config java

----

There are 2 programs which provide 'java'.

  Selection    Command
-----------------------------------------------
*+ 1           java-1.8.0-openjdk.x86_64 (/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.332.b09-1.el8_5.x86_64/jre/bin/java)
   2           java-11-openjdk.x86_64 (/usr/lib/jvm/java-11-openjdk-11.0.21.0.9-2.el8.x86_64/bin/java)

- 사용할 자바 버전을 선택하면 됨

4. 변경 후 버전 확인

java -version

openjdk version "11.0.21" 2023-10-17 LTS