ChronoLocalDateTime minus(TemporalAmount) method in Java with Examples

The minus() method of a ChronoLocalDateTime interface is used to return a copy of this ChronoLocalDateTime with the specified amount subtracted to date-time. The amount is typically Period or Duration but may be any other type implementing the TemporalAmount interface.

Syntax:

default ChronoLocalDateTime minus(TemporalAmount amountTosubtract)

Parameters: This method accepts one single parameter amountTosubtract which is the amount to subtract, It should not be null.

Return value: This method returns ChronoLocalDateTime based on this date-time with the subtractition made, not null.

Exception:
This method throws following Exceptions:

DateTimeException – if the subtraction cannot be made
ArithmeticException – if numeric overflow occurs

Below programs illustrate the minus() method:
Program 1:

// Java program to demonstrate 
// ChronoLocalDateTime.minus() method 
  
import java.time.*; 
import java.time.chrono.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Get the ChronoLocalDateTime instance 
        ChronoLocalDateTime ldt 
            = LocalDateTime 
                  .parse("2019-12-31T19:15:30"); 
  
        // Get the String representation 
        // of this ChronoLocalDateTime 
        System.out.println("Original ChronoLocalDateTime: "
                           + ldt.toString()); 
  
        // subtract 10 Days to ChronoLocalDateTime 
        ChronoLocalDateTime value 
            = ldt.minus(Period.ofDays(10)); 
  
        // print result 
        System.out.println("ChronoLocalDateTime after"
                           + " subtracting Days: "
                           + value); 
    } 
} 

Output:

Original ChronoLocalDateTime: 2019-12-31T19:15:30
ChronoLocalDateTime after subtracting Days: 2019-12-21T19:15:30

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/ChronoLocalDateTime.html#minus-java.time.temporal.TemporalAmount-

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