Can I use JDK 1.7 to compile the code written in JDK 1.6? Is Java strict downward compatible?
Do I need to keep JDK 1.6 and JDK 1.7 together in the same machine?
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Can I use JDK 1.7 to compile the code written in JDK 1.6? Is Java strict downward compatible?
Do I need to keep JDK 1.6 and JDK 1.7 together in the same machine?
Yes.
If the cross-compilation options are specified when compiling. Those are most notably:
-source-target-bootclasspath– which requires anrt.jarof the JRE (not JDK) being targeted