Java is always pass by value and not pass by reference, as proven with a simple example.
There are a few ways to achieve pass by reference, such as passing an object of a class and updating the public member variable of that object.
Pass-by-value means that the actual value of the variable is passed and pass-by-reference means the memory location is passed where the value of the variable is stored.
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Java is always Pass by Value and not pass by reference, we can prove it with a simple example.
Let’s say we have a class Balloon like below.
And we have a simple program with a generic method to swap two objects, the class looks like below.
Java is Pass by Value and Not Pass by Reference - JournalDev
Java is always a pass by value ; but, there are a few ways to achieve pass by reference :
In this method, an object of a class passes in the function and updates the public member variable of that object; changes are visible in the original memory address.
This is a simple method
How to pass by reference in Java
But Java uses only call by value. It creates a copy of references and pass them as value to the methods. If reference contains objects, then the value of an ...
Pass by reference vs Pass by Value in java