This folder contains a structured guide to primitive data types and their wrapper classes in Java. It is divided into two sections:
- Primitive Types: The foundational data types in Java.
- Wrapper Classes: Object representations of 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. |
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. |
// 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);// 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);- 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.