Learning Java/Basic Java Language: Difference between revisions

is called a '''[[w:Javadoc |Javadoc comment]]'''. These comments are used to generate documentation for your code, and they generally appear at the beginning of a class or a method definition. A special program (also named javadoc) can be used to automatically create documentation from the Javadoc comments, usually in the form of a set of HTML files. It is generally good practice to fully document your code by using Javadoc comments, but it is not required. We will use comments to document and explain our code from now on.

 

Variables are used to store information in a computer's memory. Like its name implies, variables are values that can be changed. There are two main categories of variables: reference variables and primitive variables. Reference variables are place holders for objects (More on objects in Lesson 4, Java Objects and Classes.) Primitive variables are given a value of a primitive data type, a fundamental value. Variables are all given a type when they are declared, such as "int" or "float".