Passing by Value (Primitive Data Types)
Hi Everyone,
I am continuing on with my video series on Java programming for beginners. In this video, I discuss a common difficulty that every beginner Java programmer encounters - and that is - does Java pass variables to method parameters by value or by reference. This issue is known as passing by value versus passing by reference.
Java *always* passes by value and never by reference. That is to say, Java always passes a copy of a variable to a method parameter, and never a reference to the original variable itself.
Hence, any changes made to the copy of the variable in the method does not affect the original variable in any way. This is always true for primitive data type in Java. It is a little more complex when dealing with objects in Java and I will provide a video that focuses explicitly on that scenario and explain in detail what happens when objects are passes as parameters.
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