Install JDK-8 on Ubuntu 14.04 using Terminal | OpenJDK 8

Thanks

Thanks. But after installation it still shows that I am running on Java 1.7. Where can I tell the system to regard the new version?

It says: E: could not create the Java Virtual Machine. I need some help here

E: Some index files failed to download. They have been ignored, or old ones used instead.
why?


TELL ME OKAY!

Do you realise that installing any version of JDK 8 or any JDK is not what we need. Many people need to install a very specific version of JDK or has to take care that the JDK should be above a particular version. What about that ? How do we install a specific jdk version which we want ?

thank you very much