Java updating method parameter - will it loose scope?

Asked Oct 27 '16 at 13:49

Active Oct 27 '16 at 13:49

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If I update a method parameter to a new object will this be available for the entirety of the JVM life?

For example:

Class 1:

Pojo p = new Pojo("A");

class2.method2(p)

Class 2:

public void method2(Pojo p) {
  p = new Pojo("B");
}

I know this is a bit of a silly example and the new object should be returned instead of updated like this but curious to know what the behavior will be in terms of scopes / garbage collection.

asked Oct 27 '16 at 13:49

IanWatson

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Reassigning a variable inside a method doesn't affect the variable passed into the method. Java is passing pointers by value. – khelwood Oct 27 '16 at 13:51
Does this also apply if I did p.setValue("b") ? – IanWatson Oct 27 '16 at 13:54
No, it doesn't. – khelwood Oct 27 '16 at 13:56

Java updating method parameter - will it loose scope?

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