Please consider the following debdiff patch to fix this issue.
diff -Nru jtreg-4.2-b13/debian/changelog jtreg-4.2-b13/debian/changelog --- jtreg-4.2-b13/debian/changelog 2018-08-02 04:16:44.000000000 -0300 +++ jtreg-4.2-b13/debian/changelog 2018-11-01 02:36:28.000000000 -0300 @@ -1,3 +1,9 @@ +jtreg (4.2-b13-2) UNRELEASED; urgency=medium + + * Use release instead of source/target. (Closes: #913853, LP: #1803628) + + -- Tiago Stürmer Daitx <tiago.da...@ubuntu.com> Thu, 01 Nov 2018 05:36:28 +0000 + jtreg (4.2-b13-1) unstable; urgency=medium * Team upload. diff -Nru jtreg-4.2-b13/debian/patches/series jtreg-4.2-b13/debian/patches/series --- jtreg-4.2-b13/debian/patches/series 2018-08-02 04:06:17.000000000 -0300 +++ jtreg-4.2-b13/debian/patches/series 2018-11-01 02:35:53.000000000 -0300 @@ -1,2 +1,3 @@ launchers.patch add-jcommander-to-classpath.patch +use-release-instead-of-source-target.patch diff -Nru jtreg-4.2-b13/debian/patches/use-release-instead-of-source-target.patch jtreg-4.2-b13/debian/patches/use-release-instead-of-source-target.patch --- jtreg-4.2-b13/debian/patches/use-release-instead-of-source-target.patch 1969-12-31 21:00:00.000000000 -0300 +++ jtreg-4.2-b13/debian/patches/use-release-instead-of-source-target.patch 2018-11-01 02:36:28.000000000 -0300 @@ -0,0 +1,22 @@ +Description: use 'release' instead of 'target' and 'source' + When running jtreg with openjdk-8 and the agentvm it will fail to run with + "java.lang.NoSuchMethodError: java.nio.ByteBuffer.flip()Ljava/nio/ByteBuffer". + An easy fix is to replace "source=1.7 target=1.7" with "release=7" in the + ant build script. +Author: Tiago Stürmer Daitx <tiago.da...@ubuntu.com> +Bug-Debian: https://bugs.debian.org/913853 +Bug-Ubuntu: https://launchpad.net/bugs/1803628 +Last-Update: 2018-11-01 +--- +This patch header follows DEP-3: http://dep.debian.net/deps/dep3/ +--- a/make/build.xml ++++ b/make/build.xml +@@ -172,7 +172,7 @@ + + <target name="-compile-jtreg.classes"> + <mkdir dir="${build.classes.dir}"/> +- <javac encoding="iso-8859-1" source="1.7" target="1.7" ++ <javac encoding="iso-8859-1" release="7" + debug="true" debuglevel="source,lines" + srcdir="${src.classes.dir}" + destdir="${build.classes.dir}"
