You need to install a plugin, There is a free one from the eclipse foundation called the Web Tools Platform. It has all the development functionality that you'll need.
You can get the Java EE Edition of eclipse with has it pre-installed.
To create and run your first servlet:
doGet()
method.That should do it for you. You can use ant to build here if that's what you'd like but eclipse will actually do the build and automatically deploy the changes to the server. With Tomcat you might have to restart it every now and again depending on the change.
I use Eclipse Java EE edition
Create a "Dynamic Web Project"
Install a local server in the server view, for the version of Tomcat I'm using. Then debug, and run on that server for testing.
When I deploy I export the project to a war file.
Alternatively you can use Jetty which is (now) part of the Eclipe Platform (the Help system is running Jetty). Besides Jetty is used by Android, Windows Mobile..
To get started check the Eclipse Wiki or if you prefer a Video And check out this related Post!
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