examples/java: Port examples containing [Interesting] tag from C/C++

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

examples/java/BlinkIO.java

@@ -0,0 +1,72 @@
+/*
+ * Author: Brendan Le Foll <brendan.le.foll@intel.com>
+ * Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ * Author: Petre Eftime <petre.p.eftime@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.
+ */
+
+
+import mraa.Dir;
+import mraa.Gpio;
+import mraa.Result;
+import mraa.mraa;
+
+public class BlinkIO {
+    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);
+        }
+    }
+
+    final static int DEFAULT_IOPIN = 8;
+
+    public static void main(String argv[]) throws InterruptedException {
+        int iopin = DEFAULT_IOPIN;
+        if (argv.length == 0) {
+            System.out.println("Provide an int arg if you want to flash on something other than " + DEFAULT_IOPIN);
+        } else {
+            iopin = Integer.valueOf(argv[0], DEFAULT_IOPIN);
+        }
+
+        //! [Interesting]
+        Gpio gpio = new Gpio(iopin);
+        Result result = gpio.dir(Dir.DIR_OUT);
+        if (result != Result.SUCCESS) {
+            mraa.printError(result);
+            System.exit(1);
+        }
+
+        while (true) {
+            gpio.write(1);
+            Thread.sleep(1000);
+            gpio.write(0);
+            Thread.sleep(1000);
+        }
+        //! [Interesting]
+    }
+}