In Java, there are numerous distinctions between method overloading and method overriding. The following is a list of the differences between method overloading and method overriding:
| No. | Method Overloading | Method Overriding |
|---|---|---|
| 1) | To make the program more readable, method overloading is used. | Method overriding is used to provide a specific implementation of a method that its superclass already provides. |
| 2) | Within a class, method overloading is done. | Method overriding occurs in two classes that have IS-A (inheritance) relationship. |
| 3) | When overloading a method, the parameter must be different. | When overriding a method, the parameter must be the same. |
| 4) | Compile-time polymorphism is demonstrated by method overloading. | Run-time polymorphism is demonstrated by method overriding. |
| 5) | In Java, method overloading is not possible by simply changing the method’s return type. In method overloading, the return type can be the same or different. However, you must alter the parameter. | In method overriding, the return type must be the same or covariant. |
Note: also read about the Runtime Polymorphism
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