When you pass an element from an ArrayList to a method, the...

When you pass an element from an ArrayList to a method, the method receives:
a. a copy of the ArrayList
b. the address of the ArrayList
c. a copy of the value in the element of the ArrayList
d. the address of the element in the ArrayList
e. none of the above

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Key Concepts

Parameter Passing in Java

In Java, method arguments are always passed by value. This means that when you pass an argument to a method, a copy of that argument is made. For objects, the value that is passed is the copy of the reference (or pointer) to the object, not the object itself.

Object References

Objects in Java are accessed via references, which serve as pointers to the actual data stored in memory. When these references are passed to methods, the method receives a copy of the reference, allowing it to access and modify the object, though reassigning the reference within the method does not affect the original reference.

ArrayList Elements

An ArrayList in Java stores objects by maintaining a list of object references. When you access an element from an ArrayList, you get the reference to the object. Passing this element to a method means that a copy of the object reference is passed, which allows the method to interact with the actual object stored in the ArrayList.

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