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LocalTime query() Method in Java with Examples
  • Last Updated : 08 Jan, 2019

query() method of an LocalTime class used to query this LocalTime using the specified query as parameter.The TemporalQuery object passed as parameter define the logic to be used to obtain the result from this LocalTime.

Syntax:

public <R> R query(TemporalQuery<R> query)

Parameters: This method accepts only one parameter query which is the query to invoke.

Return value: This method returns the query result, null may be returned.

Exception: This method throws following Exceptions:



  • DateTimeException – if unable to query .
  • ArithmeticException – if numeric overflow occurs.

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




// Java program to demonstrate
// LocalTime.query() method
  
import java.time.*;
import java.time.temporal.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create LocalTime object
        LocalTime lt = LocalTime.parse("10:15:30.00");
  
        // apply query method of LocalTime class
        String value
            = lt.query(TemporalQueries.precision())
                  .toString();
  
        // print the result
        System.out.println("Precision value for LocalTime is "
                           + value);
    }
}


Output:

Precision value for LocalTime is Nanos

Program 2: Showing if query did not found the required object then it returns null.




// Java program to demonstrate
// LocalTime.query() method
  
import java.time.*;
import java.time.temporal.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create LocalTime object
        LocalTime lt = LocalTime.parse("10:15:30.00");
  
        // apply query method of LocalTime class
        // print the result
        System.out.println("Zone value for LocalTime is "
                           + lt.query(
                                 TemporalQueries.offset()));
    }
}


Output:

Zone value for LocalTime is null

References:
https://docs.oracle.com/javase/10/docs/api/java/time/LocalTime.html#query(java.time.temporal.TemporalQuery)

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