Bean utils doesn't contains in the default package of JDK or Tomcat, So you need to add it manually as it is a dependency.

If you are building and web project using J2EE

Then add bean utils (.jar file) in your WebContent/WEB-INF/lib directory.

Also add all dependency in this directory

If it's a maven project add the commons-beanutils dependency

  <dependency>            
      <groupId>commons-beanutils</groupId>
      <artifactId>commons-beanutils</artifactId>
      <version>1.9.2</version>        
  </dependency>

Using provided scope can have side effects on runtime. Provided scope dependencies are used in compilation but not packaged so if the commons-beanutils-core has a method which is not present in commons-beanutils you will get NoSuchMethodException.

Better solution will be use mvn dependency:tree to find which dependencies had dependency on commons-beanutils-core and

1. Either update the dependency to a version which uses 1.9.4 version of commons-beanutils.

2. Or use exclusion to exclude commons-beanutils-core from the dependencies using commons-beanutils-core as a dependency.

If you can use method 1 it's better if you cannot find a dependency which uses the latest version, then use method 2.

Try running the following commands and examine the output:

$ mvn dependency:tree
$ mvn help:effective-pom

Look for commons-lang, maybe something will draw your attention like excludes or dependency overrides. Also, is:

$ mvn dependency:copy-dependencies

copying commons-lang JAR to your target?