java.time.Duration.minus(long amountToSubtract, TemporalUnit unit)

package com.codingdict;

import java.time.Duration;
import java.time.LocalTime;
import java.time.temporal.ChronoUnit;

public class DurationDemo {
   public static void main(String[] args) {

      Duration duration = Duration.between(LocalTime.NOON,LocalTime.MAX);  
      System.out.println(duration.getSeconds());
      Duration duration1 = duration.minus(100,ChronoUnit.SECONDS);
      System.out.println(duration1.getSeconds());
   }
}