Web Reference: Short: All parameters in Java are passed by value. But that doesn't mean an Object gets copied (like the default in PHP4), but the reference to that object gets copied. Apr 10, 2024 · Java uses two distinct mechanisms for passing data: value semantics and reference semantics. Primitive data types in Java, like integers (int), decimals (double), true/false values (boolean), and characters (char), are handled using value semantics. Because of this, an object variable doesn’t actually store the object itself, but instead stores what we call a reference to the object. You can think of a reference as a “way to find” the object that exists somewhere else on your computer, like a set of directions to get to its address.
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