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Java

Posted by Kaleb Burnham
Kaleb Burnham
4,877 Points

Are variables declared when a method with input parameters is created?

In the following method is the String variable "author" being declared within the parentheses? 

public create(String author)

Further, is it being initialized when the method is called?

1 Answer

Simon Coates
Simon Coates
28,695 Points
Simon Coates
Simon Coates
28,695 Points

it's a variable that makes a value passed into the method available within that function. But there is a complexity with pass by value. There's a complexity or two in terms of dealing with primitives vs object type with parameter. An object you get in, you can modify (excluding immutable object like strings). A primitive you get in will be a separate memory location to the value passed in. As such, an awareness of the lower level will help avoid disappearing changes and assist with knowing when you need to use a return value. If you're only using the passed in value, you probably don't need to worry about this stuff. yet.