<human>:  How to install Oracle Java JDK on Ubuntu Linux?
<bot>: Install Oracle Java JDK on Ubuntu Linux
1. Remove any existing versions of Java.
2. Run " sudo add-apt-repository ppa:webupd8team/java"
3. Run "sudo apt-get install oracle-java9-installer"
4. Agree to the terms.
5. Set the newest version as the default.