primitive-data-types

Primitive Data Types in Java

This folder contains a structured guide to primitive data types and their wrapper classes in Java. It is divided into two sections:

1. Primitive Types: The foundational data types in Java.
2. Wrapper Classes: Object representations of primitive types.

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Folder Structure

1. Primitive Types

The primitive-types/ folder contains detailed explanations and examples of Java's primitive data types.

Primitive Type	Description
boolean	Represents true/false values.
char	Represents a single character.
int	Represents 32-bit integers.
float	Represents 32-bit floating-point numbers.
double	Represents 64-bit floating-point numbers with higher precision.

2. Wrapper Classes

The wrapper-classes/ folder contains files explaining Java's wrapper classes, which provide object-based representations of primitive data types.

Wrapper Class	Primitive Type	Description
Boolean	boolean	Wraps a boolean value into an object.
Character	char	Wraps a character value into an object.
Integer	int	Wraps an int value into an object.
Float	float	Wraps a float value into an object.
Double	double	Wraps a double value into an object.

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Example Usage

Primitive Types

// Example: Using primitive types
boolean isJavaFun = true;
char grade = 'A';
int age = 25;
float price = 10.99f;
double pi = 3.14159;

System.out.println("Is Java fun? " + isJavaFun);
System.out.println("Grade: " + grade);
System.out.println("Age: " + age);
System.out.println("Price: " + price);
System.out.println("Pi: " + pi);

Wrapper Classes

// Example: Using wrapper classes
Boolean isJavaFun = Boolean.valueOf(true);
Character grade = Character.valueOf('A');
Integer age = Integer.valueOf(25);
Float price = Float.valueOf(10.99f);
Double pi = Double.valueOf(3.14159);

System.out.println("Is Java fun? " + isJavaFun);
System.out.println("Grade: " + grade);
System.out.println("Age: " + age);
System.out.println("Price: " + price);
System.out.println("Pi: " + pi);

Why Use Wrapper Classes?

• Object Manipulation: Wrapper classes allow primitive values to be treated as objects.
• Utility Methods: Provide utility methods for parsing, conversion, and manipulation.
• Collections Support: Enables storing primitive values in data structures like ArrayList and HashMap.