libtruth-java: FTBFS: xargs: /usr/lib/jvm/java-7-openjdk-*/bin/javac: No such file or directory

Imported from Debian bug http://bugs.debian.org/761544:

Source: libtruth-java
Version: 0.7.0-1
Severity: serious
Tags: jessie sid
User: <email address hidden>
Usertags: qa-ftbfs-20140913 qa-ftbfs
Justification: FTBFS on amd64

Hi,

During a rebuild of all packages in sid, your package failed to build on
amd64.

Relevant part (hopefully):
> debian/rules build
> dh build --with javahelper
> dh_testdir
> dh_auto_configure
> jh_linkjars
> debian/rules override_dh_auto_build
> make[1]: Entering directory '/«PKGBUILDDIR»'
> jh_build --javacopts="-source 1.5 -target 1.5" libtruth-0.7.0.jar src
> find src -name *.java -and -type f -print0 | xargs -0 /usr/lib/jvm/java-7-openjdk-*/bin/javac -g -cp /usr/share/java/junit4.jar:debian/_jh_build.libtruth-0.7.0 -d debian/_jh_build.libtruth-0.7.0 -source 1.5 -target 1.5
> xargs: /usr/lib/jvm/java-7-openjdk-*/bin/javac: No such file or directory
> make[1]: *** [override_dh_auto_build] Error 127

The full build log is available from:
   http://aws-logs.debian.net/ftbfs-logs/2014/09/13/libtruth-java_0.7.0-1_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.