How to find the package name?

To find the package name of a Java class, you can follow these steps:

Check the Class File: Open the Java file of the class you are interested in. The package name is usually declared at the top of the file. For example:
```
package com.example.vehicles;
```
Directory Structure: The package name corresponds to the directory structure where the class file is located. For instance, if your class file is located in src/com/example/vehicles/Car.java, the package name would be com.example.vehicles.
IDE Features: If you are using an Integrated Development Environment (IDE) like IntelliJ IDEA or Eclipse, you can usually see the package name in the project explorer or when you open the class file.
Build Configuration: If you are using a build tool like Maven or Gradle, the package structure is often defined in the src/main/java directory, and you can infer the package name from the directory structure.
Documentation: If the class is part of a library or framework, you can refer to the official documentation, which usually specifies the package names for the classes provided.

By following these methods, you should be able to determine the package name for any Java class.