- import java.time.*; 
- import java.time.temporal.ChronoUnit; 
-   
- class Ideone 
- { 
- 	{ 
- 		LocalDateTime start = LocalDateTime.now(); 
- 		Period period = Period.parse("P1M"); 
- 		LocalDateTime end = start.plus(period); 
- 		long milliseconds = start.until(end, ChronoUnit.MILLIS); 
- 		System- . out- . println(- milliseconds );
 
- 	} 
- } 
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