examples/java: Update, indent and add [Interesting] tags to examples

Signed-off-by: Petre Eftime <petre.p.eftime@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

examples/java/GpioRead6.java

@@ -24,21 +24,32 @@
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
+import mraa.Dir;
+import mraa.Gpio;
+import mraa.mraa;
+
 public class GpioRead6 {
-  static {
-    try {
-      System.loadLibrary("mraajava");
-    } catch (UnsatisfiedLinkError e) {
-      System.err.println(
-          "Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" +
-          e);
-      System.exit(1);
+    static {
+        try {
+            System.loadLibrary("mraajava");
+        } catch (UnsatisfiedLinkError e) {
+            System.err.println(
+                    "Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" +
+                            e);
+            System.exit(1);
+        }
+    }
+    public static void main(String argv[]) throws InterruptedException {
+        System.out.println(String.format("MRAA Version: %s\nStarting Read on IO6\n", mraa.getVersion()));
+        //! [Interesting]
+        Gpio gpio = new Gpio(6);
+
+        gpio.dir(Dir.DIR_IN);
+
+        while (true) {
+            System.out.format("Gpio is %d\n", gpio.read());
+            Thread.sleep(1000);
+        }
+        //! [Interesting]
     }
-  }
-  public static void main(String argv[]) {
-    mraa.mraa.init();
-    mraa.Gpio gpio_in = new mraa.Gpio(6);
-    gpio_in.dir(mraa.Dir.DIR_IN);
-    System.out.format("Gpio is %d\n", gpio_in.read());
-  }
 }