Java Update Guide Centos 7 / RHEL 7

Java is a programming language and computing platform first released by Sun Microsystems in 1995. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day. Java is fast, secure, and reliable. From laptops to data centers, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere!

# java -version
java version "1.7.0_141"
OpenJDK Runtime Environment (rhel-2.6.10.1.el7_3-x86_64 u141-b02)
OpenJDK 64-Bit Server VM (build 24.141-b02, mixed mode)

32 Bit Java Download Link
# 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/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-i586.tar.gz"

64 Java Download Linux
# 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/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.tar.gz"

# du -sh jdk-8u144-linux-x64.tar.gz
177M    jdk-8u144-linux-x64.tar.gz
# tar -xvf jdk-8u144-linux-x64.tar.gz


[root@Arkit-Serv java]# update-alternatives --install /usr/bin/java java /opt/java/jdk1.8.0_144/bin/java 100
[root@Arkit-Serv java]# update-alternatives --config java

There are 3 programs which provide 'java'.

  Selection    Command
-----------------------------------------------
*+ 1           java-1.7.0-openjdk.x86_64 (/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.141-2.6.10.1.el7_3.x86_64/jre/bin/java)
   2           /usr/java/jdk1.8.0_144/jre/bin/java
   3           /opt/java/jdk1.8.0_144/bin/java

Enter to keep the current selection[+], or type selection number: 3


[root@Arkit-Serv java]# export JAVA_HOME=/opt/java/jdk1.8.0_144/
[root@Arkit-Serv java]# export JRE_HOME=/opt/java/jdk1.8.0_144/jre
[root@Arkit-Serv java]# export PATH=$PATH:/opt/java/jdk1.8.0_144/bin:/opt/java/jdk1.8.0_144/jre/bin

# java -version
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)

That's it Java Updated.