Re: Java/J2EE Openings in RTP, NC

AdrianWilsonTS@xxxxxxxxx wrote:
Location: Research Triangle Park (Cary, NC, Raleigh, NC)
Positions:
Java Struts Developer (5 openings)
JSP, EJB, DAO Developer (5 openings)
WebServices Developer (2 openings)

We are staffing a large Java project and need qualified Java/J2EE
developers. If you cannot pass a reasonable in-person interview please
do not respond (e.g. if you do not know the difference between an
abstract class and an interface or a JDBC Type 4 and Type 1 driver).

If you cannot pass a reasonable in-person interview, please do not respond, e.g., if you do not know the difference between a programmer's newsgroup and a jobs forum, or you're not willing to pay at least $200/hr (U.S.) plus expenses.

An abstract class is declared with the keyword "class" and is an implementation, i.e., its methods can contain bodies. It is also declared "abstract", making it impossible to instantiate itself. Its main purpose is to root an inheritance tree with some behaviors predefined. Inheritance from an abstract class follows the single-inheritance rule - a child class may only extend one parent class (or none, in the exceptional case of Object). Some methods of an abstract class may be declared "abstract", which means that the method body is not provided in the abstract class but in its descendants for polymorphic invocation.

An interface is a declaration (primarily) of public method signatures which taken together represent a type with a defined contract for interaction with other types. (Interfaces may have no defined methods, in which case they represent a type "marker".) An interface's purpose is to define a type, actually a supertype for classes to implement. A class may implement any number of interfaces, but for each interface it does implement, it must provide method bodies for every method defined in the interface or be itself an abstract class.

The primary differences are
- an interface defines a type whereas an abstract class defines a core implementation,
- interfaces may be multiply implemented and may multiply inherit other interfaces, but classes may only extend one parent class which itself might be abstract,
- interfaces may not have instance variables, abstract classes may.

A "Type 1" JDBC driver is a bridge to an ODBC driver which in turn interacts with the data store. A "Type 4" JDBC driver is a driver written in Java itself which directly uses the data store using the latter's native protocol.

... and you choose your own IDE.

My, my, how very generous. If it's not open source, you do pay for it, right?

If you can code and are interested please submit a resume and salary
requirements.

"If you can code"? That's all you think a developer is?

Terms: 6 month contract. Contract to perm (normally 1-2 years).
Pay: $45-$65/hr DOE

Multiply by five and add expenses, bucko.

--
Lew
.

Relevant Pages

  • Re: Declaring a Constructor in an Interface?
    ... i have read many places that an interface is faster than ... but would You also claim that an abstract class ... Dennis JD Myrén ... > Virtual methods always means performance overhead. ...
    (microsoft.public.dotnet.languages.csharp)
  • Re: Interfaces and abstract classes et al
    ... would it be fair to say that an interface is fairly pointless if all it ... I guess in larger developer environments where many people are working ... the difference between an interface and an abstract class ... some animals can be taken for a walk. ...
    (microsoft.public.dotnet.csharp.general)
  • Re: Abstract class or interface?
    ... >derived classes can only inherit one abstract class. ... The interface properties/methods have no implementation. ... and rotate "things" along all three X, Y, and Z coordinate axis. ...
    (microsoft.public.dotnet.languages.csharp)
  • Re: Adding abstract class...
    ... Therefore I think it is often best to keep the interface ... >>still probably best to keep the interface and add the abstract class ... Strictly speaking this is not correct, an abstract base class by definition ... It would be more correct to say there is a negligible performance penalty in ...
    (comp.object)
  • Re: public interface method Id rather not be
    ... > If I use an interface internally for my application, ... > I have a validation method which ordinarilly would be private. ... class can be extended by an inner class, ... method that returns the abstract class type when it creates ...
    (comp.lang.java.programmer)