This course discusses variables in Java. You will learn about the eight primitives, also known as data types, and study the difference between local, instance, and class variables. In addition to learning the default values of each variable type, this unit discusses implicit and explicit casting and the operator types used by Java. Throughout this unit, you will note that Java is much like C's use of procedural elements.


  • Use primitive data types
  • Declare a variable
  • Distinguish between local, instance, and class variables
  • Cast larger data types into smaller types
  • Differentiate between implicit and explicit casting
  • Use operators with primitive types

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The Develpreneur Approach

Building Better Developers

Good developers and software come from foundational knowledge and steady improvement. However, there is far more to crafting a solution than simply writing code. Therefore, we explore a broad range of technical and business topics to help our community become well-rounded and highly knowledgeable about best serving their employers and customers.