🟢 Foundation · Lesson 06
Data Types in Java
Data Types in Java
Two Categories
Java data types are primitive (basic values) and non-primitive (objects like String and arrays).
Primitive Types
| Type | Stores | Example |
|---|---|---|
| int | whole numbers | int x = 10; |
| double | decimals | double p = 9.5; |
| char | single character | char g = 'A'; |
| boolean | true/false | boolean ok = true; |
| long | big whole numbers | long n = 100000L; |
Non-Primitive Types
String, arrays, and classes. These store references to objects, not the value directly.
String city = "Delhi";
int[] marks = {88, 92, 79};Summary
- Primitive: int, double, char, boolean, long, etc.
- Non-primitive: String, arrays, objects.
दो श्रेणियाँ
Java data types primitive (basic values) और non-primitive (String, arrays जैसे objects) होते हैं।
Primitive Types
| Type | रखता है | Example |
|---|---|---|
| int | पूर्ण संख्या | int x = 10; |
| double | decimals | double p = 9.5; |
| char | एक character | char g = 'A'; |
| boolean | true/false | boolean ok = true; |
| long | बड़ी पूर्ण संख्या | long n = 100000L; |
Non-Primitive Types
String, arrays, और classes। ये value सीधे नहीं, objects के references रखते हैं।
String city = "Delhi";
int[] marks = {88, 92, 79};सारांश
- Primitive: int, double, char, boolean, long आदि।
- Non-primitive: String, arrays, objects।