在JDK8 / JRE8 + Eclipse Luna上进行Google App Engine开发

Question

Since JDK7/JRE7 is being retired/obsoleted/unsupported, I would like to work using JDK8. I work on Linux.

Is there a way to run Eclipse, compile WARs and deploy them in some kind of a Java SE 7 "compatibility mode"? That is, Eclipse runs, and compilation, packaging, etc. all happens in SE 7, but only JDK8 is installed?

EDIT: I started a more generic question here .

Answer 1

You can set a compliance level in your project properties that will produce java7-compatible bytecode.

If you a actually want to compile against the java7 standard library then you will have to install jdk7 somewhere (just the JDK, no need for making the JRE the system default!), configure it in eclipse as alternative java installation and configure your project to build against its standard library.