Java Module 5 - Writing Classes
Link to Kjell Chapter on Objects
Also, I just found this interactive ‘Introduction to Programming with Java’ textbook from Runestone Academy that looks promising.
This is another course from Runestone Academy, which is tailored to AP CS students but is still useful for general Java learning: CSAwesome2. The chapter related to this module is Class Creation.
Also found this online Java sandbox: CodeHS Java Sandbox
To create UML diagrams, you can use draw.io which is a free online tool.
Working on EX 5.12 Write a method called sum100 that returns the sum of the integers from 1 to 100, inclusive.
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