When the program encounters a throw after processing

No matter where you throw out a exception, the following code will not execute, it will match the code in this layer has the corresponding catch statement to catch, if there is, then enter this catch block, execute the code in it. This time the exception is processed, and if not, it is handled by the previous layer of code, and continues to find out if there is catch statement snapping until the topmost layer of the call stack (which is a common way in Java).

The exception mechanism is simply used to separate the "code that solves the actual problem" from the "code that handles the error", reducing the coupling between them (coupling).

In general, this mechanism is used to handle errors rather than to control the program flow.

When the program encounters a throw after processing