Add openjdk8 testing on Windows

Author: mkitti

.travis.yml

@@ -27,6 +27,9 @@ jobs:
     env: JULIA_COPY_STACKS=1
     os: osx
     osx_image: xcode9.3
+  - julia: 1
+    env: JULIA_COPY_STACKS=0 JAVA_PKG=openjdk8
+    os: windows
   exclude:
   - julia: 1.0
     env: JULIA_COPY_STACKS=0

test/windows_java.sh

@@ -3,9 +3,9 @@ if [ $TRAVIS_OS_NAME == "windows" ]; then
     #export JAVA_HOME=${JAVA_HOME:-/c/jdk}
     #export PATH=${JAVA_HOME}/bin:${PATH}
     #choco install jdk8 -params 'installdir=c:\\jdk' -y
-    choco install openjdk11
+    choco install ${JAVA_PKG:="openjdk11"}
     #export JAVA_HOME="C:\Program Files\OpenJDK\openjdk-11.0.5_10"
     JAVA_ROOT_DIR='C:\Program Files\OpenJDK\'
-    export JAVA_HOME=`find "$JAVA_ROOT_DIR" -name "openjdk-11*" | tail -n 1`
+    export JAVA_HOME=${JAVA_HOME:-`find "$JAVA_ROOT_DIR" -name "openjdk*" | tail -n 1`}
 fi
 echo "JAVA_HOME: "$JAVA_HOME