Java syntax error-code that cannot be executed

In Java, it is not allowed to write code that cannot be executed, and such errors can be categorized in the following ways:

1. Return

   The statement after return is treated as invalid code.

2. Throw

   The code after throwing an exception directly with throw is treated as invalid code.

3. Catch
   

When there are multiple catch blocks, and there is an inheritance relationship between them, if the parent catch block is in front, the subsequent subclass catch block is treated as

As invalid code.

This article is from the "line of the World" blog, please be sure to keep this source http://4259297.blog.51cto.com/4249297/1656790

Java syntax error-code that cannot be executed