Installing Java on Kali-Linux

Installing Java on Kali-Linux

1. Download the latest Java SE SDK version.

At the time of writing the filename and version was jdk-8u121-linux-x64.tar.gz

2. Untar the Archive

tar -xzvf /root/jdk-8u121-linux-x64.tar.gz

mv jdk1.8.0_121 /opt
cd /opt/jdk1.8.0_121

3.This step registers the downloaded version of Java as an alternative, and switches it to be used as the default:

update-alternatives --install /usr/bin/java java /opt/jdk1.8.0_121/bin/java 1

update-alternatives --install /usr/bin/javac javac /opt/jdk1.8.0_121/bin/javac 1

update-alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so mozilla-javaplugin.so /opt/jdk1.8.0_121/jre/lib/amd64/libnpjp2.so 1

update-alternatives --set java /opt/jdk1.8.0_121/bin/java

update-alternatives --set javac /opt/jdk1.8.0_121/bin/javac

update-alternatives --set mozilla-javaplugin.so /opt/jdk1.8.0_121/jre/lib/amd64/libnpjp2.so

4. Test

To check the version of Java you are now running

java -version

To check the browser plugin browse to http://www.java.com/ and click “Do I have Java?”

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