public class Connector
{
    public Connector (boolean debug)
    {
        _debug = debug;
    }

    private boolean _debug;
}
import java.util.*;

public class Connector
{
    public Connector (boolean debug)
    {
        _debug = debug;
    }

    public Vector<JoltageAdapter> connect (Vector<JoltageAdapter> adapters)
    {
        return null;
    }

    private boolean _debug;
}
Update Connector.java