Question

From someone’s project, I am getting this error:

Java Build Path Problems (1 item)
Build path specifies execution environment J2SE-1.5.  There are no JREs installed in the workplace that are strictly compatible with this environment.  

I have the latest JDK (jdk1.6.0_25). From my understanding, I can do one of the following:

1. Download the J2SE-1.5 environment to match the project.
2. Edit the project to agree with the latest JDK. How can I do this?

Answer 1

Here’s a good discussion on this:

• How to use JDK 1.6 in 1.5 compliance mode

Basically you should

1. Download and install the 1.5 JDK. (download link)
2. In Eclipse, Go to Window → Preferences → Java → Installed JREs.
3. Add the 1.5 JDK to the list.
4. Select 1.5 as Compiler Compliance Level.