pass-by-reference

Is Java “pass-by-reference” or “pass-by-value”?

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Java is always pass-by-value. Unfortunately, when we deal with objects we are really dealing with object-handles called references which are passed-by-value as well. This terminology and semantics easily confuse many beginners. It goes like this: public static void main(String[] args) { Dog aDog = new Dog(“Max”); Dog oldDog = aDog; // we pass the object to foo foo(aDog); … Read more

How do I pass a variable by reference?

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Are parameters are passed by reference or value? How do I pass by reference so that the code below outputs ‘Changed’ instead of ‘Original’? class PassByReference: def __init__(self): self.variable=”Original” self.change(self.variable) print(self.variable) def change(self, var): var=”Changed” 3 36 Arguments are passed by assignment. The rationale behind this is twofold: the parameter passed in is actually a … Read more