/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

import java.time.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		
    Duration d = Duration.ofHours( 1 ).plusMinutes( 30 );
    String output = d.toString();

    Duration d2 = Duration.parse( output );

    long millis = d2.toMillis();

    System.out.println( "output: " + output );
    System.out.println( "d2: " + d2 );
    System.out.println( "dt.toMillis(): " + millis );

	}
}