servlet-api and cos.I added jar library and checked it
I put servlet-api in the Java jdk folder
Class pass was added to the environment variable.
I tried adding a library separately to Servlet InputStream.class, which is currently showing an error, but it doesn't work.
Why is that?
Below is an error window.
It's very difficult.Kodam
NoClassDefFoundError is literally an error caused by not finding the class.
The symptoms are the same as this person. servlet.jar, cos.You used both jar
He kindly explained why it didn't work.
Class loaders also have hierarchical structures~
It would be good to refer to this article as well.
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