Q) In java multi-threading, a thread can be created by

        1 Extending Thread class
        2 Implementing Runnable interface
        3 Using both(Y)
        4 None

Q) Which method is called internally by Thread start() method?

        1 execute()
        2 run() (Y)
        3 launch()
        4 main()

Q) Which method must be implemented by a Java thread?

        1 run() (Y)
        2 execute()
        3 start()
        4 None