Web Reference: Chapter 3: Know Your Variables: Primitive variables and references Learn about Java's primitive data types, reference variables, and how they are stored in memory. Covers declaring, initializing, and using variables, as well as understanding variable scope. Head First Java, 3rd edition, is a valid alternative to today’s excellent video materials: It allows learners—ju-nior and senior alike—to quickly grasp concepts without losing them in details, but also without dumbing down the material, and with enough of the correct references for further reading. This chapter discusses variables in Java including primitive types like int and double, reference variables that hold references to objects, and arrays. It covers declaring and assigning variables, garbage collection, and creating objects using the new keyword.
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