What are optional parameters in Java?

What are optional parameters in Java?

In Java, optional parameters allow methods to be called with fewer arguments than defined. This is often achieved using method overloading or varargs.

Can you give me an example of how to use optional parameters?

Sure! You can define a method like this: void display(int a, String... messages) { ... }. Here, messages is an optional parameter.

What happens if I don't provide the optional parameters?

If you don't provide the optional parameters, the method will still work using the default values or just the required parameters.

Are there any limitations to using optional parameters in Java?

Yes, one limitation is that you can't have optional parameters before required ones in the method signature.