36th: Insist on using the override annotation

@Override annotations can only be used in a method declaration, which means that the annotated method declaration overrides a declaration in the super-type.

@Target (Elementtype.method) @Retention (Retentionpolicy.source)  public @Interface  Override {}

@Target the specified annotation only works on the method

@Retention specifies that annotations will be discarded at compile time

You should use the override annotation in each method declaration that you want to overwrite the superclass declaration so that when the method you want to overwrite is not overwritten, the compiler can prompt the error, greatly reducing the likelihood of the method overwriting the failure.

36th: Insist on using the override annotation