Java Type Conversion – Implicit & Explicit with Examples

Must be specified explicitly using a cast operator.
Converts data from a larger size to a smaller size, which might result in data loss.
Syntax: (targetType) value

Example

double num = 10.5;

int intNum = (int) num; // double to int (narrowing)

int aa=600;

byte byteNum=(byte)aa;

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Type Conversion Between Strings and Primitives:

Primitive to String: Use String.valueOf() or concatenation.
String to Primitive: Use wrapper classes like Integer.parseInt() or Double.parseDouble().

Example

int num = 10;

String str = String.valueOf(num); // "10"

String str2 = "25";

int num2 = Integer.parseInt(str2); // 25

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Automatic Type Promotion in Expressions:

In expressions, smaller types (byte, short, char) are automatically promoted to int.

Example

byte a = 10;

byte b = 20;

int result = a + b; // Automatically promoted to int

System.out.println("Result: " + result);

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