Why am I getting a NoClassDefFoundError in Java?

java, noclassdeffounderror

Solution

This is caused when there is a class file that your code depends on and it is present at compile time but not found at runtime. Look for differences in your build time and runtime classpaths.

Problem

I am getting a `NoClassDefFoundError` when I run my Java application. What is typically the cause of this?

Original source

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