Optional function parameter Java

Question

I want to know if there is a way of makeing optional parameter in java.

for my experience in other programing languages there is an option to write function prototype like that: int foo(int num = 0) and if i call the func foo() the var num will be equal to 0.

I've been looking over the internet and its seem to be not exists in java.

No it doesn't exist in Java, if you want similar behavior you need to overload the method: create a version of the method that required no parameters and calls the other version of the method with a default parameter. (eG. `public int foo() { return foo(0);}`) — OH GOD SPIDERS, Jun 10 '20 at 15:55
Have you considered [varargs](https://docs.oracle.com/javase/8/docs/technotes/guides/language/varargs.html)? — Abra, Jun 10 '20 at 16:03

score 1 · Answer 1 · answered Jun 10 '20 at 16:42

1

Varargs should fulfill your request here. Call method without passing any arguments or pass null parameter:- foo(null) or foo().

Your method signature:-

void foo(String... name){//Business logic}

answered Jun 10 '20 at 16:42

Dipali

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Optional function parameter Java

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