long start = System.getCurrentTimeMillis();
while ( running == true ) { // do nothing }
long end = System.currentTimeMillis();
long time = end - start;
oder mit System.nanoTime()
long start = System.getCurrentTimeMillis();
while ( running == true ) { // do nothing }
long end = System.currentTimeMillis();
long time = end - start;
oder mit System.nanoTime()