public class GroveLED_ex { static { try { System.loadLibrary("javaupm_grove"); } catch (UnsatisfiedLinkError e) { System.err.println("error in loading native library"); System.exit(-1); } } public static void main (String args[]) throws InterruptedException { upm_grove.GroveLed led = new upm_grove.GroveLed(2); for (int i = 0; i < 10; ++i) { led.on(); Thread.sleep(1000); led.off(); Thread.sleep(1000); } led.delete(); } }