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A Complete Guide to Java Programming

Types of Variables: Part 1

Explore the different types of variables in Java including reference, local, instance, and class variables. Understand their scope, lifecycle, and how they store data and state within methods and objects. This lesson will help you grasp the fundamentals necessary for managing variable behavior in Java applications.

We'll cover the following...

Reference variables

Now, we can give a summary of a few key rules about variables. We have found three types of variables so far:

  1. Reference variable
  2. Local variable
  3. Instance variable

The reference variables are directly related to the object scope. We have seen some problems and studied their nature through those problems.

Local variables

Local variables have some special characteristics. They are declared within a block, or method, or constructor. When the method is called, or the block is entered, these local variables are created and destroyed when we leave the block or if ...