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What is Apache Tomcat Server?

Apache Tomcat is an open-source Web server tool developed which allows to the implementation Java Servlets and JavaServer Pages (JSP) or in other words, it is a web container that allows or used to run Java applications.

Why we need Apache Tomcat?

In CGI (Common Gate Interface) when request comes from client to the server, then new process created every time for each request. Which decreases performance and it is very time consuming.

To resolve this problem Apache tomcat server comes into the existence. Which creates new thread instance of new process during every request. This consume very less time and increases performance level.

Function:

Tomcat acts or behaves as a development server on your desktop to use for testing when building applications that use JSF 2, servlets/JSP, or other Java-based dynamic Web technologies.

Basically, it implements the Java Servlet and the Java Server Pages (JSP) specifications from Sun Microsystem, and provides a "pure Java" HTTP web server environment for Java code to run in.

Apache Tomcat includes tools for configuration and management, but can also be configured by editing XML configuration files.

Following are the steps to configure Tomcat in Eclipse:

1. Install Java. Make sure you have Java 7 or Java 6 installed.

2. Unzip Tomcat. Unzip tomcat-7.0.34-preconfigured.zip. (If possible download the latest version of Apache Tomcat)

3. Download Eclipse 4.4 (Luna). Install Eclipse 4.4 (Luna).

4. Tell Eclipse about Tomcat. Start Eclipse and go to the Workbench. Click on Servers tab at bottom. R-click>New>Server>Apache>Tomcat v7.0, navigate to Tomcat installation folder (e.g., C:\apache-tomcat-7.0.34), OK.

5. Test the server. Test Tomcat within Eclipse.

6. Adjust Eclipse preferences. Point at your JDK: Window, Preferences, Java, Installed JREs, make sure a JDK (not JRE) is selected. If not, click Add and point at the install location of your JDK. Suppress unnecessary warnings about serialized classes: Window, Preferences, Java, Compiler, Errors /Warnings, change "Serializable class without ..." to "Ignore". Many other personal preferences re font size, indentation style, etc.

Hope this information regarding Apache Tomcat server is useful to the students of Advance Java.

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