OnJava8-Examples/onjava/Timer.java at master · CSapprenticeWT/OnJava8-Examples · GitHub

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// onjava/Timer.java

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

package onjava;

import static java.util.concurrent.TimeUnit.*;

public class Timer {

private long start = System.nanoTime();

public long duration() {

return NANOSECONDS.toMillis(

System.nanoTime() - start);

}

public static long duration(Runnable test) {

Timer timer = new Timer();

test.run();

return timer.duration();

}