Learn about Java primitive data types in detail. Explore the list of Java primitive types, their size, range, and examples with explanations.
Introduction to Java Data Types
When learning Java programming, one of the first things you encounter is Java data types. Data types define the kind of values a variable can hold. In simple terms, they act as blueprints that tell the compiler and programmer what type of data is stored in a variable.
In Java, data types are mainly classified into two categories:
Primitive types in Java
Reference types in Java
This blog focuses on Java primitive data types, their characteristics, examples, size, range, and the difference between primitive and reference types.
What Are the Primitive Data Types in Java?
Primitive data types in Java are the most basic data types built into the Java language. They represent simple values and are not objects. Java provides eight primitive types.
These are:
byte
short
int
long
float
double
char
boolean
So, if you are wondering, how many primitive data types does Java have? The answer is 8.
Why Are Primitive Types Important?
They are fast and efficient, directly stored in memory.
They help define the foundation of Java programs.
They form the basis for variables, expressions, and calculations.
Java Data Types List
Let’s break down the Java data types list and understand the Java basic data types one by one.
1. byte
Size: 1 byte (8 bits)
Range: -128 to 127
Default Value: 0
Use Case: Efficient for saving memory in large arrays.
Example:
byte age = 25;
System.out.println(age);
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