Eclipse Community Forums: Newcomers » Using 1.6 jdk in Neon not supported?

Help

Home

Home » Newcomers » Newcomers » Using 1.6 jdk in Neon not supported?(Using 1.6 jdk in Neon not supported?)

Show: Today's Messages :: Show Polls :: Message Navigator

Using 1.6 jdk in Neon not supported? [message #1750951]

Mon, 02 January 2017 16:52

Ryan Brown

Messages: 4
Registered: January 2017

Junior Member

I just started on a project that targets the 1.6 jre. I have set-up the proper execution environments and ant build tragets. However, when I try to run my ant dist target I get the following error.

eclipse.buildId=4.6.1.M20160907-1200
java.version=1.8.0_111
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Command-line arguments:  -os win32 -ws win32 -arch x86_64

org.eclipse.ant.launching
Error
Mon Jan 02 09:39:47 MST 2017
JRE version less than 1.7 is not supported.

Is this indicating that neon cannot actually build/run jre 1.6 applications? I feel like it is much more likely that I am missing some configuration option. This will build find from the command line for me.

Report message to a moderator

Re: Using 1.6 jdk in Neon not supported? [message #1750988 is a reply to message #1750951]

Tue, 03 January 2017 13:55

Eric Rizzo

Messages: 3070
Registered: July 2009

Senior Member

We'll need some more detail to help; the above looks like you are trying to launch Eclipse itself using a 1.6 JVM. Is that your intention?
All recent versions of Eclipse can be used to develop applications that target older JVMs, that's not a problem. Back up and describe in more detail what you are doing.

Report message to a moderator

Re: Using 1.6 jdk in Neon not supported? [message #1751010 is a reply to message #1750988]

Tue, 03 January 2017 16:19

Ryan Brown

Messages: 4
Registered: January 2017

Junior Member

Thanks for the reply. I am actually just trying to run an ant dist target when I get that error.

Attachment: eclipse_build_error.gif
(Size: 130.62KB, Downloaded 502 times)

Report message to a moderator

Re: Using 1.6 jdk in Neon not supported? [message #1751014 is a reply to message #1751010]

Tue, 03 January 2017 16:30

Eric Rizzo

Messages: 3070
Registered: July 2009

Senior Member

The Ant run configuration is probably using the project's JRE by default. You can edit the run configuration and change the JRE that it uses to execute. See http://help.eclipse.org/neon/index.jsp?topic=%2Forg.eclipse.platform.doc.user%2FgettingStarted%2Fqs-84_run_ant.htm&cp=0_1_2_0_2

Report message to a moderator

Re: Using 1.6 jdk in Neon not supported? [message #1751019 is a reply to message #1751014]

Tue, 03 January 2017 17:05

Ryan Brown

Messages: 4
Registered: January 2017

Junior Member

This [attached] is what I see in the run configuration.

index.php/fa/28002/0/

Attachment: run_config.png
(Size: 33.20KB, Downloaded 8187 times)

[Updated on: Tue, 03 January 2017 17:08]

Report message to a moderator

Re: Using 1.6 jdk in Neon not supported? [message #1751029 is a reply to message #1751019]

Tue, 03 January 2017 18:12

Eric Rizzo

Messages: 3070
Registered: July 2009

Senior Member

Well thur's yur problem right thur!
Smile

It's been a long time since I worked with Ant, so I don't know why it's complaining about 1.6, but you can just change that configuration to use 1.7 or 1.8. That is just configuring which JVM is used to execute Ant (which is a Java program, after all) and should not impact your application.

Report message to a moderator