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Editorial Team
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Asked: 2026-06-05T10:05:45+00:00

[Tomcat] validateJarFile(servlet-api.jar) – jar not loaded. Offending class: javax/servlet/Servlet.class org.apache.catalina.loader.WebappClassLoader validateJarFile INFO: validateJarFile(\WEB-INF\lib\servlet-api.jar) –

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[Tomcat] validateJarFile(servlet-api.jar) – jar not loaded.
Offending class: javax/servlet/Servlet.class
org.apache.catalina.loader.WebappClassLoader validateJarFile INFO:
validateJarFile(\WEB-INF\lib\servlet-api.jar) – jar not
loaded. See Servlet Spec 2.3, section 9.7.2. Offending class:
javax/servlet/Servlet.class.

I googled for this,I got to know that I am using servlet-api.jar in my project WEB-INF/lib, and also I am having same servlet-api.jar in tomcat/lib folder. so I have to remove servlet-api.jar, But if I remove that jar, I am getting error in import javax.servlet.*; so how to I solve this, help me for fix this error.Thanks in advance

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1 Answer

  1. Editorial Team

    The error you are getting is because servlet-api needs to be on compile time build path, at runtime your app will have the servlet-api available from tomcat/lib

    So add it to your build path simply, In short servlet-api is required at compile aswell as runtime

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