Access Modifiers in Java

access modifiers in Java are the limitations to the scope of the Java properties, basically there are four types which are described in detail in this topic.

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E-Government

E-Government (short for electronic government, also known as e-gov, digital government, online government, or connected government) is digital interactions between a government and citizens (G2C), government and businesses/Commerce (G2B), government and employees, and also between government and governments /agencies (G2G). Essentially, the e-Government delivery models can be briefly summed up as:

1.) G2C (Government to Citizens)

2.) G2B (Government to Businesses)

3.) G2E (Government to Employees)

4.) G2G (Government to Governments)

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Model for E-commerce transaction

E-commerce transactions can be defined or modeled by identifying the business partners directly involved in the transaction. This is the most convenient and useful way of building models for e-commerce transactions.
Some significant models are :

1.) Business-to-Business e-Commerce (B2B)
2.) Business to consumer (B2C)
3.) Business-to-Government (B2G)
4.) Consumer-to-Consumer (C2C)
5.) Consumer-to-Government (C2G)
6.) Consumer-to-Business (C2B)

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What is e-commerce or e-business ?

E-Commerce stands for “Electronic Commerce”. It initially started during the Berlin Airlift, Germany in 1948 when big corporate started taking order for goods electronically with the help of telephones and other private networks.

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Use of Existing Classes in java

Most common class in JAVA is Java.Lang package and its classes. Which are Object, System, Integer, Boolean, String, StringBuffer, Float, Double, Short, Long and many more.

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Spiral model

Spiral model was originally proposed by Boehm.It is an evolutionary software process model which is a combination of an iterative nature of prototyping and controlled and systematic aspects oftraditional waterfall model. 

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