java_home doc notes

Author: plaird

docs/bef/install.md

@@ -22,8 +22,14 @@ Other platforms (yo, OS/2 user!) may also work, but you may need to contribute p
 
 At this time, we don't have specific guidance on what JDK version you should be using.
 Any JDK11 or above should work.
-We support modern versions of Java, so whatever you pick should just work.
 If you find one that does NOT work, let us know.
+
+Bazel generally has not been strong with hermetic Java configuration and relies on *JAVA_HOME*
+   in unexpected ways.
+If your build relies on *JAVA_HOME* being set, you will likely have problems with BEF.
+See [this issue](https://github.com/salesforce/bazel-eclipse/issues/417) for additional configuration steps
+   you will need to perform as workarounds.
+
 More details of our JDK support strategy can be [found here](../dev/jdk.md).
 
 ### Installing Eclipse

docs/bef/issues.md

@@ -40,6 +40,10 @@ In the meantime, there are two workarounds:
 - Only import one of the Bazel packages (```//a/b/c``` or ```//x/y/z```) into Eclipse to prevent the cycle.
 - Delete the error from the _Problems View_ in Eclipse and the Error will not return often. Right click on the error line, and choose _Delete_.
 
+### JDK Configuration Issues: "IllegalArgumentException: external/local_jdk" or "Unable to locate a Java Runtime."
+
+See [this BEF issue](https://github.com/salesforce/bazel-eclipse/issues/417) for status and
+  workarounds for these types of problems.
 
 ### "CreateProcess Error Code 5 Access Denied", "Error fetching repository" (Windows)