java - @override 在 java 中如何工作

Question

我看到@override注释是标记注释。编译器如何知道如何处理这个注释？检查方法是否真的重写父类(super class)方法的逻辑在哪里？我想它考虑了所有注释，因为没有逻辑

Answer 1

standard documentation很好地回答了这个问题。

@Override @Override annotation informs the compiler that the element is meant to override an element declared in a superclass. Overriding methods will be discussed in Interfaces and Inheritance.

// mark method as a superclass method
// that has been overridden
@Override 
int overriddenMethod() { }

While it is not required to use this annotation when overriding a method, it helps to prevent errors. If a method marked with @Override fails to correctly override a method in one of its superclasses, the compiler generates an error.