JPA

The Java Persistence API is enabling us to create the persistence layer for desktop and web applications. 

JCA

Java Cryptography Architecture term from Sun for implementing security functions for the Java platform. It provides a platform and gives architecture and APIs for encryption and decryption. 

GSM, 3G, Edge, WIFI, GPS

GSM: (Global System for Mobile Communications: originally from Groupe Spécial Mobile) is the most popular standard for mobile.


3G stands: for 3rd-generation mobile technology. The services associated with 3G provide the ability to transfer both voice data and non-voice data. 3G brings wireless transmission speeds, which allow full motion video, high-speed internet access and video-conferencing. 


Edge means: Enhanced Data rates for GSM Evolution (EDGE) is a digital mobile phone technology which acts as a bolt-on enhancement to 2G and 2.5G GPRS networks. It can carry data speeds up to 384 kbit/s in packet mode and will therefore meet the International Telecommunications Union's requirement for a 3G network.

WIFI:  wireless local area network: a local area network that uses high frequency radio signals to transmit and receive data over distances of a few hundred feet; uses ethernet protocol)

GPS: (a navigational system involving satellites and computers that can determine the latitude and longitude of a receiver on Earth by computing the time difference for signals from different satellites to reach the receiver)

RMI

The Remote Method Invocation API allows an object to invoke methods of an object running on another Java Virtual Machine.

JNDI

Java Naming and Directory Interface enables accessing the Naming and Directory Service such as DNS and LDAP.

FTP

File Transfer Protocol (FTP) is a standard network protocol used to transfer files from one host to another host over a TCP-based network, such as theInternet. It is often used to upload web pages and other documents from a private development machine to a public web-hosting server. FTP is built on aclient-server architecture and uses separate control and data connections between the client and the server.

HTTP

The Hypertext Transfer Protocol (HTTP) is an application protocol for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web.

URL

A URL is a specialization of URI that defines the network location of a specific resource. Unlike a URN, the URL defines how the resource can be obtained. We use URLs every day in the form ofhttp://damnhandy.com, etc. But a URL doesn’t have to be an HTTP URL, it can be ftp://damnhandy.com, smb://damnhandy.com, etc.

URN

A URI identifies a resource by name in a given namespace but not define how the resource maybe obtained. This type of URI is called a URN. You may see URNs used in XML Schema documents to define a namespace, usually using a syntax such as:

xsd:schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="urn:example"

Here the targetNamespace use a URN. It defines an identifier to the namespace, but it does not define a location.

URI

A URI identifies a resource either by location, or a name, or both. More often than not, most of us use URIs that defines a location to a resource. The fact that a URI can identify a resources by both name and location has lead to a lot of the confusion in my opinion. A URI has two specializations known as URL and URN

MIME

Multipurpose Internet Mail Extensions (MIME) is an Internet standard that extends the format of email to support:

1. Text in character sets other than ASCII
2. Non-text attachments
3. Message bodies with multiple parts
4. Header information in non-ASCII character sets