Pass by value in Java [duplicate]

This question already has answers here: 开发者_运维知识库 Closed 12 years ago.

Possible Duplicates:

Does Java pass by reference?

Is Java pass by reference?

Hey,

Is it true that Java passes everything by value, and we can't pass something by reference ?

Thanks.

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Good God, it can't be asked again. Java is pass by value - always, in all cases. That's it.

Here's a reference that quotes James Gosling, who should be authoritative enough for anyone:

From the authors of Java: "There is exactly one parameter passing mode in Java - pass by value - and that helps keep things simple." The Java Programming Language, 2nd ed. by Ken Arnold and James Gosling, section 2.6.1, page 40, 3rd paragraph.

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Java passes value of references of the objects you are passing and simple value for primitive types. See following discussion on this: Is Java pass by reference?

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Java passes primitives by value by default, and all types have their object references passed by value. See http://java.sun.com/docs/books/jls/third_edition/html/typesValues.html#4.3.1 for details.