Compile the program using the Sun javac compiler program. Execute the program using the Sun java virtual machine program named java . To my knowledge, Java programs cannot be written and executed interactively. My plan is to publish a new lesson about once every other week. These lessons will have something for just about everyone, depending on where the user enters the sequence of lessons.
Beginners start at the beginning, experienced programmers jump in later on.
Python can be used in an interactive, interpreted, or compiled mode. Both Python and JPython are free, True or False. As of this writing, both are freely usable and distributable, both for commercial and non-commercial use. Python is an object-oriented language, True or False. Just the opposite is true, small core and large library.