install java in kali linux

1)Download the latest Java SE SDK version.
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

2)
tar -xzvf /root/jdk1.8.0_91.tar.gz
mv jdk1.8.0_91 /opt
cd /opt/jdk1.8.0_91

3)
This step registers the downloaded version of Java as an alternative, and switches it to be used as the default:
*)system 64bit = amd64 && 32bit = i386

update-alternatives --install /usr/bin/java java /opt/jdk1.8.0_91/bin/java 1
update-alternatives --install /usr/bin/javac javac /opt/jdk1.8.0_91/bin/javac 1
update-alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so mozilla-javaplugin.so /opt/jdk1.8.0_91/jre/lib/i386/libnpjp2.so 1
update-alternatives --set java /opt/jdk1.8.0_91/bin/java
update-alternatives --set javac /opt/jdk1.8.0_91/bin/javac
update-alternatives --set mozilla-javaplugin.so /opt/jdk1.8.0_91/jre/lib/i386/libnpjp2.so


4)
Test To check the version of Java you are now running

java -version