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# Maven Introducing External Dependencies **If we need to introduce third-party library files into our project, how should we operate?** The dependencies list in pom.xml lists all the external dependencies our project needs to build. To add a dependency, we generally first add a `lib` folder under the `src` folder, and then copy the jar files needed by your project into the `lib` folder. We are using `ldapjdk.jar`, which is a helper library for LDAP operations: !(#) Then add the following dependency to the `pom.xml` file: ldapjdkldapjdk1.0system${basedir}srclibldapjdk.jar The complete code of the `pom.xml` file is as follows: 4.0.0com.companyname.bankconsumerBankingjar1.0-SNAPSHOTconsumerBankinghttp://maven.apache.orgjunitjunit3.8.1testldapjdkldapjdksystem1.0${basedir}srclibldapjdk.jar