How to handle "Default constructor cannot handle exception type ClassNotFoundException" error

The error is "Default constructor cannot handle exception type ClassNotFoundException thrown by implicit super constructor. Must define an explicit constructor"
in the " = new DriveStore()" declaration in this class

import ..... ;

@WebServlet("/create_drive")
public class create_Drice extends HttpServlet {
	private static final long serialVersionUID = 1L;
	private DriveStore drive_store = new DriveStore();
	
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        ...
        ...
	}
	protected void doPost(HttpServletRequest request, HttpServletResponse response) 
			throws ServletException, IOException {
		...
        ...
	}
}

try-catch block outside doGet() and doPost did not work and drive_store is used in both.
How could this be solved?

The reason for the compile error is that the creation of a DriveStore instance using the default constructor might throw a ClassNotFoundException, but the Compiler can neither automatically handle the exception nor rethrow it, because the implicit default constructor of the shown class create_Drice does not declare any exceptions (implicit constructors can never throw declared exceptions in Java).

As the error message says, the fix is to add an explicit constructor to the create_Drice class. This constructor can either declare and throw the exception like this:

public class create_Drice {
	
	private DriveStore drive_store;
	
	public create_Drice() throws ClassNotFoundException {
		drive_store = new DriveStore();
	}

}

... or it can handle the exception in some way:

public class create_Drice {
	
	private DriveStore drive_store;
	
	public create_Drice() {
		try {
			drive_store = new DriveStore();
		} catch (ClassNotFoundException exc) {
			throw new RuntimeException("Cannot create DriveStore", exc);
		}
	}

}

The "handling" of the exception shown here is the conversion to a runtime exception, which does not have to be declared in Java. Of course you can implement some other way to handle the exception.