are they all different? I would think that the project's jre would be it. But if you are compiling for a different architecture, like a cell phone, you should probably specify the execution environment. Just my thought. --le ----- Original Message ----- From: "Homme, James" <james.homme@xxxxxxxxxxxx> To: <program-java@xxxxxxxxxxxxx> Sent: Friday, February 04, 2011 7:29 AM Subject: [program-java] Re: Beginning Java Ramblings Hi, I thought I would start to tackle Eclipse, so I wanted to start to make a small Java project, since the second real Java chapter of my Java book starts us on making a class and another program that runs the first class. Before I got Eclipse, I installed the JDK and was using a text editor. When I started to make my Java project in Eclipse, it asked me if I wanted to use several JRE's. One is for project specific, one says it's the default, which is the JDK I installed, and the other is an execution environment JRE. Which one should I tell it to use, and why? Thanks. Jim This e-mail and any attachments to it are confidential and are intended solely for use of the individual or entity to whom they are addressed. If you have received this e-mail in error, please notify the sender immediately and then delete it. If you are not the intended recipient, you must not keep, use, disclose, copy or distribute this e-mail without the author's prior permission. The views expressed in this e-mail message do not necessarily represent the views of Highmark Inc., its subsidiaries, or affiliates.