What are the basic concepts of Java

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1. IDE, SDK

1.1 IDE

Integrated Development Environment, integrated development environment

For example: Eclipse, Visual studio

1.2 SDK

Software Development Kit, Software Development Kit

For example: JDK, Andriod SDK

II. Deployment of Java development environment

2.1 Eclipse (IDE)

2.2 JDK (SDK)

JDK: SDK for developers, which provides the development and running environment for Java.

JRE:Java runs in an environment that is aimed at users of Java programs, not developers.

2.3 Tomcat

Apache,web server, corresponding HTML static web page.

Tomcat, application Java server, JSP and other dynamic web pages.

3. Java, JavaBean, Serverlet, JSP, JavaScript

MVC:Model 、 View 、 Controller

3.1 Java

A programming language that allows you to write applications, mainly for network programming.

J2SE (Java 2 Standard Edition): standard edition that contains the classes that form the core of the Java language.

J2EE (Java 2 Enterprise Edition): enterprise Edition, which contains classes for J2SE, as well as classes for developing enterprise applications.

J2ME (Java 2 Micro Edition): a miniature version that contains a classification of J2SE.

3.2 JavaBean

Reusable components written in Model,Java language.

3.3 serverlet

Server program written in Controller,Java language.

3.4 JSP

View, a network programming language based on Java, can only be used on web pages.

Same as ASP and PHP.

3.5 JavaScript

A scripting language that has nothing to do with Java.

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