WFS: Added water flow sensor without grove dependency

Signed-off-by: Sisinty Sasmita Patra <sisinty.s.patra@intel.com>

examples/java/WFSSample.java

@@ -0,0 +1,44 @@
+/*
+ * Author: Stefan Andritoiu <stefan.andritoiu@intel.com>
+ * Copyright (c) 2015 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+//NOT TESTED!!!
+public class WFSSample {
+
+	public static void main(String[] args) throws InterruptedException {
+		// ! [Interesting]
+		// Instantiate a Water Flow Sensor on digital pin D2
+		upm_wfs.WFS flow = new upm_wfs.WFS(2);
+
+		flow.clearFlowCounter();
+		flow.startFlowCounter();
+
+		while (true) {
+			System.out.print("Millis: " + flow.getMillis() + " FlowCount: " + flow.flowCounter());
+			System.out.println(" Flow Rate: " + flow.flowRate() + " LPM");
+
+			Thread.sleep(2000);
+		}
+		// ! [Interesting]
+	}
+}