JDK, JRE (JAVA) 설치

다운로드

JDK는 Oracle에서 다운 받는다.

http://www.oracle.com/

jdk 설치

[root@localhost ~]# rpm -qa | grep java

[root@localhost ~]# yum -y remove java

[root@localhost ~]# cd /data

[root@localhost data]# tar zxvf jdk-8u112-linux-x64.tar.gz

[root@localhost data]# mv jdk1.8.0_112 /usr/local/

[root@localhost data]# cd /usr/local/

[root@localhost local]# ln -s jdk1.8.0_112 java

[root@localhost local]# vi /etc/bashrc (/etc/profile에 설정해도 무관)

...##최하단에 아래 내용 추가

JAVA_HOME=/usr/local/java

CLASSPATH=.:$JAVA_HOME/lib/tools.jar

PATH=$PATH:$JAVA_HOME/bin

export JAVA_HOME CLASSPATH PATH

[root@localhost local]# source /etc/bashrc

[root@localhost local]# java -version

java version "1.8.0_112"

Java(TM) SE Runtime Environment (build 1.8.0_112-b15)

Java HotSpot(TM) 64-Bit Server VM (build 25.112-b15, mixed mode)

** 만약 설치가 안될 경우 java 설치 전에 glibc.i686을 설치해본다.

[root@localhost local]# yum -y install glibc.i686

jre 설치

[root@localhost data]# rpm -qa | grep java

[root@localhost data]# yum -y remove java

[root@localhost data]# tar zxvf jre-7u79-linux-x64.tar.gz

[root@localhost data]# mkdir /usr/local/java

[root@localhost data]# mv jre1.7.0_79 /usr/local/java

[root@localhost data]# cd /usr/local/java

[root@localhost java]# ls

jre1.7.0_79

[root@localhost java]# ln -s jre1.7.0_79 jre

[root@localhost java]# vi /etc/profile

...

(최하단에 아래내용 입력)

JAVA_HOME=/usr/local/java/jdk

JRE_HOME=/usr/local/java/jre

CLASSPATH=.:$JAVA_HOME/lib/tools.jar

PATH=$PATH:$JAVA_HOME/bin

export JAVA_HOME JRE_HOME CLASSPATH PATH

[root@localhost java]# source /etc/profile

[root@localhost java]# java -version

java version "1.7.0_79"

Java(TM) SE Runtime Environment (build 1.7.0_79-b15)

Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)

[root@localhost java]# javac -version

javac 1.7.0_79