How to install JDK latest version in your machine and install java environment properly

Ubuntu ::

Just run these commands ::

$ sudo add-apt-repository ppa:webupd8team/java

$ sudo apt-get update

$ sudo apt-get install oracle-java8-installer

$ sudo apt-get install oracle-java8-set-default

Test JDK has been installed successfully :: javac

CentOS 6 ::

Downoad latest JDK from here:: http://bc.vc/byid4w

Download JDK .tar.gz file according to your OS bit 32 or 64

Just run these commands ::

[root@db-tom ~]# mkdir /usr/java

[root@db-tom ~]# mv jdk-8u73-linux-x64.tar.gz   /usr/java

[root@db-tom ~]# cd /usr/java

[root@db-tom ~]# tar -xzf jdk-8u73-linux-x64.tar.gz

[root@db-tom ~]# vim ~/.bash_profile

Add  below two lines in ~/.bash_profile

Press i to edit ~/.bash_profile

JAVA_HOME=/usr/java/jdk1.8.0_73

export JAVA_HOME

PATH=$JAVA_HOME/bin:$PATH

export PATH

After adding above lines

Press Esc button then write :wq and press Enter button

Test java has been successfully installed ::

[root@db-tom ~]# echo $JAVA_HOME

[root@db-tom ~]# /usr/java/jdk1.8.0_73