Added some examples for Java

Signed-off-by: Andrei Vasiliu <andrei.vasiliu@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/java/Adxl345.java

@@ -0,0 +1,29 @@
+public class Adxl345 {
+    static {
+        try {
+            System.loadLibrary("javaupm_adxl345");
+        } catch (UnsatisfiedLinkError e) {
+            System.err.println("error in loading native library");
+            System.exit(-1);
+        }
+    }
+
+    public static void main(String argv[]) throws InterruptedException {
+        upm_adxl345.Adxl345 obj = new upm_adxl345.Adxl345(0);
+        int[] raw = new int[3];
+        float[] accel = new float[3];
+
+        while (true) {
+            obj.update();
+            raw = obj.getRawValues();
+            accel = obj.getAcceleration();
+
+            System.out.println("raw data: " + raw[0] + " " + raw[1] + " " +
+                    raw[2]);
+            System.out.println("accel data: " + accel[0] + " " + accel[1] + " "
+                    + accel[2]);
+
+            Thread.sleep(1000);
+        }
+    }
+}