Variables in Java
In Java, variables are used to store data in a program. Variables have a name, a type, and a value. The type of a variable determines what kind of data it can store, and the value is the data stored in the variable. Java has several types of variables, including: Primitive types: These are the basic types of data that are built-in to Java, such as int (integer), float (decimal number), boolean (true/false value), char (single character), and double (double-precision decimal number). Reference types: These types of variables store a reference to an object, rather than the object itself. Examples of reference types include String (a sequence of characters), and arrays. Here are some examples of how to declare and initialize variables in Java: It's important to note that in Java all variables must be declared before they can be used. The syntax for declaring a variable is type variableName; and to initialize a variable, you use the assignment operator (=) to give it a value: var