Java(자바) JDK(Java Development Kit) 설치 및 설정

2016년 11월 기준.

 

java -version

// 자바 버전 확인

 

which java

// 자바 설치 위치 확인

 

wget http://download.oracle.com/otn/java/jdk/7u79-b15/jdk-7u79-linux-x64.tar.gz

 

wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" https://download.oracle.com/otn/java/jdk/8u231-b11/5b13a193868b4bf28bcb45c792fce896/jdk-8u231-linux-x64.tar.gz

// 401 Authorization failed.

curl -O -v -j -k -L -H "Cookie: oraclelicense=accept-securebackup-cookie" https://download.oracle.com/otn/java/jdk/8u231-b11/5b13a193868b4bf28bcb45c792fce896/jdk-8u231-linux-x64.tar.gz

// curl도 안됨. sftp로 복사

 

tar -xvzf jdk-8u231-linux-x64.tar.gz -C /usr/local/java/

// 해당경로에 압축해제

 

yum remove jdk

// jdk 삭제

yum remove jre

// jre 삭제

 

vi /etc/profile

// jdk 경로 설정

 

export JAVA_HOME=/usr/local/java/jdk1.7.0_79

export PATH=$PATH:$JAVA_HOME/bin

 

source /etc/profile

// 설정 적용

 

openjdk 깨끗히 삭제

[root@localhost ]# rm -rf /usr/bin/java

[root@localhost ]# rm -rf /usr/lib/java

[root@localhost ]# rm -rf /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.91-2.6.2.3.el7.x86_64/jre/bin/java

[root@localhost ]# rm -rf /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.91-2.6.2.3.el7.x86_64/jre-abrt/bin/java