public class A110x_ex { static { try { System.loadLibrary("javaupm_a110x"); } catch (UnsatisfiedLinkError e) { System.err.println("error in loading native library"); System.exit(-1); } } public static void main(String argv[]) throws InterruptedException { upm_a110x.A110X a110x = new upm_a110x.A110X(2); while(true) { if(a110x.magnetDetected()) { System.out.println("magnet detected..."); } else { System.out.println("magnet not detected..."); } Thread.sleep(1000); } } }