When classloader is used, the following error occurs: Java. Lang. noclassdeffounderror

When classloader is used to load resources, the following errors often occur:

Exception in thread "Main" Java. Lang. noclassdeffounderror: COM/tools/result
At java. Lang. Class. getdeclaredconstructors0 (native method)
At java. Lang. Class. privategetdeclaredconstructors (class. Java: 2328)
At java. Lang. Class. getconstructor0 (class. Java: 2640)
At java. Lang. Class. newinstance0 (class. Java: 321)
At java. Lang. Class. newinstance (class. Java: 303)
At com. Npower. dm. Tools. Backup. startup. Main (startup. Java: 78)

Solution:

Do not add useless classes in the same package

During packaging, you only need to call startup. Java instead of other classes,

Classloader will find it and load it after finding it

If the classloader is packed and loaded, it will be repeated, so the above situation occurs.

 

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