为什么要在Java或Android中使用@Override？

在 java或 Android中有@Override注释.这是什么意思？我发现,当方法来自于子类或继承接口的方法时,我会使用它,我想进一步知道其他的是@SuppressWarnings它也是Anonation,如果是,由java使用多少个annonation和为了哪个目的.

解决方法

这个问题也在这里回答,相当简洁：
Android @Override usage

It’s an annotation that you can use to tell the compiler and your IDE that you intend the method that has that annotation to be an override of a super class method. They have warning/errors in case you make mistakes,for example if you intend to override a method but misspell it,if the annotation is there the IDE or the compiler will tell you that it is not in fact overriding the super class method and thus you can determine why and correct the misspelling.

This is all the more important for Android applications and activities for example,where all of the calls will be based on the activity lifecycle – and if you do not properly override the lifecycle methods they will never get called by the framework. Everything will compile fine,but your app will not work the way you intend it to. If you add the annotation,you’ll get an error.

换句话说,如果你添加了@Override,这有助于确保你真的覆盖现有的方法！相当有用