#10 Java Type Casting Explained – Implicit & Explicit Conversion (2025)

Published: 06 May 2025
on channel: Web Tech Knowledge

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Master type casting in Java with this beginner-friendly tutorial! Learn how to convert between primitive and reference types safely using implicit and explicit casting, with practical examples.

1. Primitive Type Casting
Implicit (Widening) Casting
Automatically converts smaller → larger types

java
int num = 100;
double bigNum = num; // Auto-converts int → double
System.out.println(bigNum); // 100.0
Supported Path:
byte → short → int → long → float → double

Explicit (Narrowing) Casting
Manual conversion (may lose data)

java
double pi = 3.1416;
int intPi = (int) pi; // Truncates to 3
System.out.println(intPi); // 3
Example with Caution:

java
byte smallNum = (byte) 200; // Overflow! (Result: -56)

✔ Implicit: Safe (no data loss)
✔ Explicit: Requires (type) syntax (risk of overflow/ClassCastException)

#Java #TypeCasting #Programming #Coding #OOP

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