Compiling

For compiling the code and proceeding to the next step like

• Creating an Index
• Running

and so-on.

We need to execute this command on the root directory

mvn clean install

By running this command in the project’s root directory (where the pom.xml file resides), it first cleans up any previously compiled files or resources by removing the target/ directory (clean). Then, it compiles the source code, runs unit tests, packages the project (e.g., into a JAR or WAR), and installs the package into the local Maven repository (install). This process ensures a fresh build and makes the project available for other local projects that might depend on it. If desired, tests can be skipped by appending -DskipTests to the command.