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 remote Java application


You may have debugged standalone Java applications from Eclipse. You set breakpoints in the code, run the application in the Debug mode from Eclipse, and then debug the application by stepping through the code. Debugging remote Java applications is a bit different, particularly when it comes to how you launch the debugger. In the case of local application, the debugger launches the application. In the case of remote application, it is already launched and you need to connect the debugger to it. In general, if you want to allow remote debugging for the application, you need to run the application using the following parameters:

-Xdebug -Xrunjdwp:transport=dt_socket,address=9001,server=y,suspend=n
  • Xdebug enables debugging
  • Xrunjdwp runs the debugger implementation of the Java Debug Wire Protocol (JDWP)

Instead of -Xdebug -Xrunjdwp, you can also use -agentlib:jdwp for JDK 1.5 and above, for example:

-agentlib:jdwp=transport= dt_socket,address=9001,server=y,suspend...