nanoTimeを
1
000
000__000`で分割するか、
TimeUnit.SECONDS.convert`を使って変換します。
JavaExample.java
package com.mkyong;
import java.util.concurrent.TimeUnit;
public class JavaExample {
public static void main(String[]args) throws InterruptedException {
long start = System.nanoTime();
Thread.sleep(5000);
long end = System.nanoTime();
long elapsedTime = end - start;
System.out.println(elapsedTime);
//1 second = 1__000__000__000 nano seconds
double elapsedTimeInSecond = (double) elapsedTime/1__000__000__000;
System.out.println(elapsedTimeInSecond + " seconds");
//TimeUnit
long convert = TimeUnit.SECONDS.convert(elapsedTime, TimeUnit.NANOSECONDS);
System.out.println(convert + " seconds");
}
}
出力
5000353564 5.000353564 seconds 5 seconds
