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Editorial Team
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Asked: 2026-05-14T06:18:51+00:00

In Java, I can easily pass data using (ObjectA)objB. How can I do the

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In Java, I can easily pass data using (ObjectA)objB. How can I do the similar things in Objective C? Also, why the Objective C can’t return an Object, but only can return the id only? I do -(MyObj)returnMyObject{ }, but the Xcode warning me that I can’t use the MyObj, but I can return the id….. -(id) returnMyObject {}.

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  1. Editorial Team

    The underlying model of Java and Apple’s Objective C objects is really the same both have all objects on the heap and are accessed via pointers.

    The difference is in Java the pointers are hidden so (ObjectA)objB is a pointer to data of type ObjectA. In Objective C the pointer is explicit and you need to say (MyObj*)returnMyObject{ }

    id is a pointer to an object (so is an exception in that the pointer is implicit like Java)

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