How to Install Oracle JDK 8 on Manjaro Easy Guide

Installing

4. 4. Installing

   Next to Install Oracle JDK 8
   First, Login as SuperUser to make commands shorter:

   su 

   If Got “User is Not in Sudoers file” then Look:
   Solution
   
   First, Make a jvm Directory if Not already there with:

   if [ ! -d "/usr/lib/jvm" ]; then mkdir /usr/lib/jvm; fi

   And Set the SuperUser as owner:

   chown -R root:root /tmp/jdk1.8*

   Reiterate the Execution Permission over the Java binaries

   chmod -R +x /tmp/jdk1.8*/bin

   Finally, Shift the Java contents with:

   mv /tmp/jdk1.8* /usr/lib/jvm/

5. 5. Symlinking

   Follow to Setup Needed Symlinks
   First, to Copy the Exact Path to Insert in:

   cd /usr/lib/jvm/jdk1.8*

   pwd

   Select & Ctrl+Shift+c to Copy the Path :)
   Go to the Parent directory with:

   cd ..

   Now Release the potentially existing Symlinks:

   unlink default

   unlink default-runtime

   Finally, for the JDK make:

   ln -s [copiedJdkPath] default

   Ctrl+Shift+v to Paste the Path copied before.
   And for JRE:

   ln -s [copiedJdkPath]/jre default-runtime

   With this you Should be Done! ;)

6. 6. Setting Env Vars

   SetUp the Java JDK 8 Environment Variables (Optional)
   Use the PATH copied in Previous step..

   nano /etc/profile.d/oraclejdk8.sh

   And Paste in:

   /nexport J2SDKDIR=[copiedJdkPath]/nexport J2REDIR=$J2SDKDIR/jre/nexport JAVA_HOME=$J2SDKDIR/
   

   Ctrl+x to Save & Exit from nano :)

   nano /etc/profile.d/oraclejdk8.csh

   Again:

   setenv J2SDKDIR=[copiedJdkPath]
   setenv J2REDIR=$J2SDKDIR/jre
   setenv JAVA_HOME=$J2SDKDIR/