Book Image

Java EE 8 Development with Eclipse - Third Edition

By : Ram Kulkarni
Book Image

Java EE 8 Development with Eclipse - Third Edition

By: Ram Kulkarni

Overview of this book

Java EE is one of the most popular tools for enterprise application design and development. With recent changes to Java EE 8 specifications, Java EE application development has become a lot simpler with the new specifications, some of which compete with the existing specifications. This guide provides a complete overview of developing highly performant, robust and secure enterprise applications with Java EE with Eclipse. The book begins by exploring different Java EE technologies and how to use them (JSP, JSF, JPA, JDBC, EJB, and more), along with suitable technologies for different scenarios. You will learn how to set up the development environment for Java EE applications and understand Java EE specifications in detail, with an emphasis on examples. The book takes you through deployment of an application in Tomcat, GlassFish Servers, and also in the cloud. It goes beyond the basics and covers topics like debugging, testing, deployment, and securing your Java EE applications. You'll also get to know techniques to develop cloud-ready microservices in Java EE.
Table of Contents (20 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Free Chapter
1
Introducing JEE and Eclipse
Index

Debugging a web application using Tomcat in Eclipse EE


We have already learned how to configure Tomcat in Eclipse EE and deploy web applications in it from Eclipse (refer to the Configuring Tomcat in Eclipse and Running JSP in Tomcat sections in Chapter 2, Creating a Simple JEE Web Application). We will use the Course Management application that we created in Chapter 4, Creating JEE Database Applications (JDBC version), for debugging.

Starting Tomcat in Debug mode

If you want to debug a remote Java process, you need to start the process using debug parameters. However, if you have configured Tomcat in Eclipse EE, you don't need to do this manually. Eclipse takes care of launching Tomcat in Debug mode. To start Tomcat in Debug mode, select the server in the Servers view and click the Debug button. Alternatively, right-click on the server and select Debug from the menu. Make sure that the project you want to debug is already added to Tomcat; in this case, the project is CourseManagementJDBC...