Duration plusMillis(long) method in Java with Examples

The plusMillis(long) method of Duration Class in java.time package is used to get an immutable copy of this duration with the specified number of milli-seconds added, passed as the parameter.

Syntax:

public Duration plusMillis(long numberOfMillis)

Parameters: This method accepts a parameter numberOfMillis which is the number of milli-seconds to be added. It can be positive or negative but not null.



Return Value: This method returns a Duration which is an immutable copy of the existing duration with the parameter amount of milli-seconds added to it.

Exception: This method throws ArithmeticException if numeric overflow occurs.

Below examples illustrate the Duration.plusMillis() method:

Example 1:

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// Java code to illustrate plusMillis() method
  
import java.time.Duration;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Duration 1 using parse() method
        Duration duration1
            = Duration.parse("P2DT3H4M");
  
        // Get the duration added
        // using plusMillis() method
        System.out.println(duration1.plusMillis(2));
    }
}

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Output:

PT51H4M0.002S

Example 2:

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// Java code to illustrate plusMillis() method
  
import java.time.Duration;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Duration 1 using parse() method
        Duration duration1
            = Duration.parse("P0DT0H4M");
  
        // Get the duration added
        // using plusMillis() method
        System.out.println(duration1.plusMillis(5));
    }
}

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Output:

PT4M0.005S

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/Duration.html#plusMillis-long-



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