Getalldeclaredmethods() method in httpservlet
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Java
Looking at apache-tomcat-7.0 When I saw the httpservlet in 40, I saw that the method getalldeclaredmethods () in it was written very well!
I want to say two things:
When we judge whether an array is empty, we should first judge whether the array is null, and judge the length of the array
The methods mentioned here are:
This is an array copy array function in Java Lang. system class.
Parameter meaning:
A good way to use
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