Add action for compiling monetdb-java on MS windows.

Author: mvdvm

.github/workflows/windows.yml

@@ -0,0 +1,45 @@
+# This workflow will build a Java project with Maven
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
+# or https://github.com/actions/checkout  and  https://github.com/actions/setup-java
+
+name: Windows
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: windows-latest
+
+#    services:
+#      monetdb_container:
+#        image: monetdb/monetdb:latest
+#        env:
+#          MDB_DAEMON_PASS: monetdb
+#          MDB_DB_ADMIN_PASS: monetdb
+#        ports:
+#          - 50000:50000
+# Error: docker: command not found
+
+    steps:
+    - uses: actions/checkout@v6
+
+    - name: Set up JDK
+      uses: actions/setup-java@v5
+      with:
+        java-version: 11
+        distribution: microsoft
+
+    - name: Build
+      run: make
+
+#    - name: Create jar symlink
+#      run: ln -s monetdb-jdbc*.jar monetdb-jdbc.jar
+#      working-directory: jars
+
+# running java test programs fails, due to failed connection. Probably the server was not started. Assistance needed.
+#    - name: Run JDBC_API_Tester
+#      run: java -cp jars/monetdb-jdbc.jar:jars/jdbctests.jar JDBC_API_Tester 'jdbc:monetdb://localhost:50000/monetdb?user=monetdb&password=monetdb'
+
+#    - name: Run OnClientTester
+#      run: java -cp jars/monetdb-jdbc.jar:jars/jdbctests.jar OnClientTester 'jdbc:monetdb://localhost:50000/monetdb?user=monetdb&password=monetdb' -v