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xi-yang edited this page Nov 3, 2016 · 1 revision

Installation for jdk1.8.0_91

If your version is different, replace all instances of jdk1.8.0_91 with your version

  1. Go into the /opt/ directory and use wget to download JDK for Linux x64, replace the link with a link to your jdk version if needed. If wget is not yet installed use sudo yum install wget.

    wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.tar.gz"

  2. Extract the archived content using

    tar -vxzf jdk-8u91-linux-x64.tar.gz

  3. Install Java with Alternatives by first going into the /opt/jdk1.8.0_91/ directory, then do the following:

    sudo alternatives --install /usr/bin/java java /opt/jdk1.8.0_91/bin/java 2
sudo alternatives --config java

When it outputs: ``` There is 1 program that provides 'java'. Selection Command *+ 1 /opt/jdk1.8.0_45/bin/java

Enter to keep the current selection[+], or type selection number: 
```

enter 1

  1. Set up javac and jar command paths using alternatives, 
    sudo alternatives --install /usr/bin/jar jar /opt/jdk1.8.0_91/bin/jar 2
sudo alternatives --install /usr/bin/javac javac /opt/jdk1.8.0_91/bin/javac 2
sudo alternatives --set jar /opt/jdk1.8.0_91/bin/jar
sudo alternatives --set javac /opt/jdk1.8.0_91/bin/javac

then check the java version installed with java -version and make sure you get this output: java version "1.8.0_91" Java(TM) SE Runtime Environment (build 1.8.0_45-b14) Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)

  1. Configure the environment variables

    export JAVA_HOME=/opt/jdk1.8.0_91
export JRE_HOME=/opt/jdk1.8.0_91/jre
export PATH=$PATH:/opt/jdk1.8.0_91/bin:/opt/jdk1.8.0_91/jre/bin

  2. Since the above command only works for this session only, you will need to be added to all system users

    1. for the Bourne Shell, create a new file called /etc/profile.d/java.sh and put the following script in it
    if ! echo ${PATH} | grep -q /opt/jdk1.8.0_91/bin ; then
   export PATH=/opt/jdk1.8.0_91/bin:${PATH}
fi
if ! echo ${PATH} | grep -q /opt/jdk1.8.0_91/jre/bin ; then
   export PATH=/opt/jdk1.8.0_91/jre/bin:${PATH}
fi
export JAVA_HOME=/opt/jdk1.8.0_91
export JRE_HOME=/opt/jdk1.8.0_91/jre
export CLASSPATH=.:/opt/jdk1.8.0_91/lib/tools.jar:/opt/jdk1.8.0_91/jre/lib/rt.jar
    1. For the C shell, create new file called /etc/profile.d/java.csh and put the following script in it
    if ( "${path}" !~ */opt/jdk1.8.0_91/bin* ) then
   set path = ( /opt/jdk1.8.0_91/bin $path )
endif
if ( "${path}" !~ */opt/jdk1.8.0_91/jre/bin* ) then
   set path = ( /opt/jdk1.8.0_91/jre/bin $path )
endif
setenv JAVA_HOME /opt/jdk1.8.0_91
setenv JRE_HOME /opt/jdk1.8.0_91/jre
setenv CLASSPATH .:/opt/jdk1.8.0_91/lib/tools.jar:/opt/jdk1.8.0_91/jre/lib/rt.jar

  3. Make sure the owner and ACL for the profile files by executing the following:

    sudo chown root:root /etc/profile.d/java.sh
sudo chmod 755 /etc/profile.d/java.sh
sudo chown root:root /etc/profile.d/java.csh
sudo chmod 755 /etc/profile.d/java.csh

Now you can move on to [installing Wildfly](Installing Wildfly 10.0.0 on Centos 7.1)

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