Some good explanation of why 1.8 source cannot be compiled to 1.8- bytecode
http://stackoverflow.com/questions/16143684/can-java-8-code-be-compiled-to-run-on-java-7-jvm https://zeroturnaround.com/rebellabs/java-8-explained-default-methods On Wed, Oct 5, 2016 at 12:15 PM, Munagala Ramanath <r...@datatorrent.com> wrote: > Doing that gives us this lovely message: > > [INFO] Compiling 2 source files to /home/ram/tests/apex/ > myapexapp/target/classes > javacTask: source release 1.8 requires target release 1.8 > > An interesting page discussing possible problems: > http://www.draconianoverlord.com/2014/04/01/jdk-compatibility.html > > Ram > > > On Wed, Oct 5, 2016 at 10:22 AM, Thomas Weise <t...@apache.org> wrote: > >> Source level can be 1.8, which allows you to use 1.8 features. Did you >> keep target level at 1.7? >> >> >> On Wed, Oct 5, 2016 at 10:18 AM, hsy...@gmail.com <hsy...@gmail.com> >> wrote: >> >>> I think the problem is what people expect when we say "certified". To >>> me, If I see something is certified with java 8, I would assume that I can >>> use java 8 api(new features stream, lambda etc.) to write the operator >>> code, not only just run the code with jre 8 or compile existing code with >>> jdk 8 and run. >>> >>> I did try some operator code with java 8 stream API and some lambda >>> expression in some methods it works. I havn't tried any operators with new >>> features in their non-transient properties. And also we should take a look >>> to see if kryo fully works with java 8 classes/types >>> >>> Regards, >>> Siyuan >>> >>> >>> >>> On Wed, Oct 5, 2016 at 9:34 AM, Munagala Ramanath <r...@datatorrent.com> >>> wrote: >>> >>>> You can use Java 8 but the source and target compatibility >>>> configuration parameters in >>>> your pom.xml for the maven-compiler-plugin still need to be 1.7 >>>> >>>> Ram >>>> >>>> On Wed, Oct 5, 2016 at 9:14 AM, Feldkamp, Brandon (CONT) < >>>> brandon.feldk...@capitalone.com> wrote: >>>> >>>>> So is it safe to say that JDK 1.8 is supported to the same extent that >>>>> 1.7 is? >>>>> >>>>> >>>>> >>>>> We’re not running into any issues currently (that I know of…feel free >>>>> to chime back in Alex) but we’re making design decision and were curious >>>>> about being able to use Java 8 features. >>>>> >>>>> >>>>> >>>>> Thanks! >>>>> >>>>> Brandon >>>>> >>>>> >>>>> >>>>> *From: *Vlad Rozov <v.ro...@datatorrent.com> >>>>> *Organization: *DataTorrent >>>>> *Reply-To: *"users@apex.apache.org" <users@apex.apache.org> >>>>> *Date: *Monday, October 3, 2016 at 11:43 PM >>>>> *To: *"users@apex.apache.org" <users@apex.apache.org> >>>>> *Subject: *Re: Apex and Malhar Java 8 Certified >>>>> >>>>> >>>>> >>>>> We do test on Java 8 - both Apex Core and Malhar Apache Jenkins builds >>>>> use JDK 1.8 to run tests. >>>>> >>>>> Thank you, >>>>> >>>>> Vlad >>>>> >>>>> On 10/3/16 15:45, Thomas Weise wrote: >>>>> >>>>> Apex is built against Java 7 and expected to work as is on Java 8 >>>>> (Hadoop distros still support 1.7 as well). Are you running into specific >>>>> issues? >>>>> >>>>> >>>>> >>>>> Thanks, >>>>> >>>>> Thomas >>>>> >>>>> >>>>> >>>>> On Mon, Oct 3, 2016 at 12:06 PM, McCullough, Alex < >>>>> alex.mccullo...@capitalone.com> wrote: >>>>> >>>>> Hey All, >>>>> >>>>> >>>>> >>>>> I know there were talks about this at some point but is Apex and/or >>>>> Malhar Java 8 certified? If not, is there a current plan and date to be >>>>> so? >>>>> >>>>> >>>>> >>>>> Thanks, >>>>> >>>>> Alex >>>>> >>>>> >>>>> ------------------------------ >>>>> >>>>> The information contained in this e-mail is confidential and/or >>>>> proprietary to Capital One and/or its affiliates and may only be used >>>>> solely in performance of work or services for Capital One. The information >>>>> transmitted herewith is intended only for use by the individual or entity >>>>> to which it is addressed. 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