IBM Support

Why am I encountering java.lang.NoClassDefFoundError at runtime?

Troubleshooting


Problem

In workbench, adding projects directly to the java build path will allow code to compile, but it will not be able to resolve the same classes at runtime, resulting in class not found errors.

[{"Product":{"code":"SSPVUA","label":"IBM InfoSphere Master Data Management Server"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Workbench","Platform":[{"code":"PF033","label":"Windows"}],"Version":"10.1;11.0;11.3;11.4;11.5","Edition":"WebSphere","Line of Business":{"code":"LOB76","label":"Data Platform"}}]

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Document Information

Modified date:
22 June 2026

UID

swg21991203