add missing java pipeline

Signed-off-by: Aidan Oldershaw <aoldershaw@pivotal.io>

pipelines/java.yml

@@ -0,0 +1,42 @@
+jobs:
+- name: test
+  plan:
+  - get: apache-kafka-git
+    trigger: true
+  - config:
+      caches:
+      - path: $HOME/.m2/repository
+      - path: $HOME/.gradle/caches/
+      - path: $HOME/.gradle/wrapper/
+      container_limits: {}
+      image_resource:
+        name: ""
+        source:
+          repository: gradle
+          tag: jdk8-slim
+        type: registry-image
+      inputs:
+      - name: apache-kafka-git
+      platform: linux
+      run:
+        args:
+        - -c
+        - |
+          java -Xmx32m -version
+          javac -J-Xmx32m -version
+
+          cd apache-kafka-git
+
+          gradle wrapper
+          ./gradlew rat
+          ./gradlew systemTestLibs
+        path: /bin/sh
+        user: root
+    task: run-tests
+  public: true
+resources:
+- icon: github
+  name: apache-kafka-git
+  source:
+    uri: https://github.com/apache/kafka.git
+  type: git

pipelines/set-pipelines.yml

@@ -31,7 +31,7 @@ jobs:
         file: concourse-examples/pipelines/pipeline-vars.yml
         vars:
           first: initial
-          number: "9000"
+          number: 9000
           hello: HAL
       - set_pipeline: task-passing-artifact
         file: concourse-examples/pipelines/task-passing-artifact.yml
@@ -51,3 +51,5 @@ jobs:
         file: concourse-examples/pipelines/nodejs-app-testing.yml
       - set_pipeline: php
         file: concourse-examples/pipelines/php-larvel-app-testing.yml
+      - set_pipeline: java
+        file: concourse-examples/pipelines/java.yml