Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields, ...

Q: When would you create static methods as opposed to instance methods? I understand that static methods allow you to use those methods without having to create an instance of that class, and that ...

Many object-oriented analysis (OOA) methods are now available for use in system analysis. The methods have many common essential features. For example, they build analysis models for systems and ...

A new propulsion method for metallic micro- and nano-objects has been developed. The process is based on the novel concept of bipolar electrochemistry: under the influence of an electric field, one ...

Scientists have demonstrated how to levitate a variety of objects -- ceramic and polyethylene spheres, glass bubbles, ice particles, lint strands and thistle seeds -- between a warm plate and a cold ...

Although scientists have been able to levitate specific types of material, a pair of UChicago undergraduate physics students helped take the science to a new level. Third-year Frankie Fung and ...