[Linux] JDK 8버전 설치

Centos 7 리눅스에 JDK 8버전을 설치하는 방법입니다.

먼저 JDK8파일(jdk-8u251-linux-x64.tar.gz)을 받아 설치합니다.

# tar xzf jdk-8u251-linux-x64.tar.gz

# mv jdk1.8.0_251/ /usr/local/

# cd /usr/local/jdk1.8.0_251/

alternatives

# alternatives --install /usr/bin/java java /usr/local/jdk1.8.0_251/bin/java 2

# alternatives --config java

# alternatives --install /usr/bin/jar jar /usr/local/jdk1.8.0_251/bin/jar 2

# alternatives --install /usr/bin/javac javac /usr/local/jdk1.8.0_251/bin/javac 2

# alternatives --set jar /usr/local/jdk1.8.0_251/bin/jar

# alternatives --set javac /usr/local/jdk1.8.0_251/bin/javac

설정프로파일 적용

# vi /etc/profile

맨 아래 추가

export JAVA_HOME=/usr/local/jdk1.8.0_251
export JRE_HOME=/usr/local/jdk1.8.0_251/jre
export PATH=$PATH:/usr/local/jdk1.8.0_251/bin:/usr/local/jdk1.8.0_251/jre/bin