Introduction to the responsibility chain pattern of Java design pattern

Friends who have used macros should know that using macros can realize one key binding multiple skills. For example, if the top skill has a CD, skip this skill and execute the next skill. I remember playing DK. When playing strange, I just use a key and press it all the time. In the doget and dopost methods in the servlet, we generally launch the doget request to dopost for processing, which is also a mode of responsibility chain.

Here, there is a macro that binds the two skills of "ice blood cold pulse" and "ice arrow". The program example is as follows:

Test class:

Test results:

Summary: the responsibility chain mode is mainly used when there may be multiple objects to process a request.