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Variables&Data Types Java

In Java, variables are fundamental storage units that hold data values. They can store various types of data, including numbers (integers, decimals), characters (letters), boolean values (true/false), and references to objects. Variables are essential for processing and managing data within a program ³⁴.

When declaring a variable in Java, you specify its data type and name. The syntax follows the format: dataType variableName = value;. For example, int age = 30; declares an integer variable named age and initializes it with the value 30. There are different types of variables, including local variables (accessible only within methods), instance variables (accessible by any method in a class), and static variables (shared among all instances of a class) ⁴⁵.

Java also categorizes data types into two main groups: primitive data types (like int, double, char, and boolean) and non-primitive data types (like classes, interfaces, and arrays) ⁴.

If you have more questions about Java variables or data types, feel free to ask!

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