Topic 6.6: Working with Methods and Encapsulation - Determine the effect upon object references and primitive values when they are passed into methods that change the values

Question 1

This means a copy of the actual parameter’s value is passed to the formal parameter in a method.

Answer 1

What is pass-by-value in Java?

Question 2

For this Java uses “pass-by-value” for both primitive types and object references.

Answer 2

How does Java handle parameter passing in methods?

Question 3

What is pass-by-value in Java?

Answer 3

This means a copy of the actual parameter’s value is passed to the formal parameter in a method.

Question 4

How does pass-by-value work for object references?

Answer 4

• Object references are passed by value, meaning a copy of the reference (memory address) is passed to the method.
• When an object reference is passed to a method, the method receives a copy of the reference, not a copy of the object itself.
• Any changes made to the object through the reference inside the method will affect the original object outside the method.

Question 5

How does Java handle parameter passing in methods?

Answer 5

For this Java uses “pass-by-value” for both primitive types and object references.

Question 6

What happens when primitive types are passed to a method?

Answer 6

• Primitive types are passed by value, meaning a copy of the actual value is passed to the method.
• Any changes made to the parameters inside the method do not affect the original values outside the method.