In java, why new operator not used before data type to allocate memory? -



In java, why new operator not used before data type to allocate memory? -

if need new operator allocate memory object, why don't utilize before info types allocate memory?

class-name class-var = new class-name(); new int a;

because james gosling said so.... (or bjarne stroustrup said so). really, question of language design, not technical laws.

javac hides these semantics , called boxing / unboxing (and automatically). types can exist values or "objects" (typically implemented heap). when context requires object reference, javac emits box instruction move int value object wrapper (int -> integer) , passes reference value. many low level jvm opcodes built handle scalar values built handle reference values (or references).

one prime illustration storing int collection. gets boxed.

but in end, asking why language syntactically asking artist why painted painting thus. because. languages designed whim , emotion, in java's case, syntax of new inherited c++ whim might have been bjarne stroustrup's instead. consider scala jvm language, yet has different syntax mutual ideas.

the key here compiler author can create decision tomorrow "new java" new language requires new in caps in front end of types. implemented without affecting semantics of language, whatsoever.

granted, there sound design , consistency behind choices, choices still choices. in case, selection indicates int primitive type, , new returns objects, not primitives. selection of syntax.

java new-operator

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