Learn Java Programming - @Override Annotation Tutorial

Published: 05 August 2015
on channel: Daniel Ross

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The @Override is an annotation, an annotation does not change the way your program works, but rather it flags the compiler to be on the lookup for a special condition. When you override a method in a subclass it is a good idea to include the @Override annotation on the line before the method signature. The @Override annotation flags the compiler that the following method is overriding a method in a superclass. If that method does not exist in the superclass, the compiler will generate an error. Discovering an error when overriding a method saves a ton of time, especially if the overloaded method has a small typo in the name. An even better reason for including the @Override is flag someone else who is looking at your code that the method is in fact a overridden method. Without the annotation, the only way to know would be to peck and hunt through the food chain of superclasses. I personally absolutely love it when I see the @Override in Java code. It tells me right off the bat that the programmer who wrote the class had the foresight and took the time to be thorough.

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