Web Reference: Nov 12, 2025 · Upcasting is the process of casting a subtype to a supertype in the inheritance tree's upward direction. When a sub-class object is referenced by a superclass reference variable, an automatic process is triggered without any further effort. Real-Life Example Here is a real-life example of type casting. We calculate the percentage of a user's score in relation to the maximum score in a game. We use type casting to make sure that the result is a floating-point value, rather than an integer: Feb 22, 2024 · I’ve compiled a list of questions and answers about fundamental topics in Java that I believe every Java developer should be aware of. This is part 1, covering the concepts of type-casting, upcasting and downcasting.
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