Red Hat Bugzilla – Bug 1104813
ant does not properly detect Java version 7
Last modified: 2016-05-10 20:14:11 EDT
The ant version shipped with RHEL6 can not properly detect Java 7, which means ${ant.java.version} gets set to 1.6 even when 1.7 is installed For example: Detected Java version: 1.6 in: /usr/lib/jvm/java-1.7.0-oracle-1.7.0.55.x86_64/jre It would appear this is hard coded within Ant as this version is too old to support 1.7 ? http://stackoverflow.com/questions/15418127/ant-1-8-1-showing-incorrect-java-version Looking at the source of ant, perhaps ant 1.7 does not support java 1.7 :) Perhaps an RPM requirement should be set on this? Or can support for this be backported?
I'm having this same issue - however, if I install Java 1.6 alongside 1.7, ant seems to function OK (so far) You can use the 'alternatives' utility to switch between versions of Java: # /usr/sbin/alternatives --config java
Confirmed. Java version detection code in JavaEnvUtils.java needs to be backported from latest upstream Ant.
Java 7, 8 and 9 detection was implemented in ant-1.7.1-14.el6 Reproducer: Run: "ant -diagnostics" with Java 7 Output should contain line: "ant.java.version: 1.7" When running with Java 8 or 9, the above line should (respectively) state 1.8 or 1.9 instead.
verified in ant-1.7.1-15.el6
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2016-0884.html