IsoChronology resolveDate() method in Java with Example
Last Updated :
27 Mar, 2020
The resolveDate() method of java.time.chrono.IsoChronology class is used to retrieve the local date according to Iso calendar by parsing chrono field associated with a particular long value in a map with the help of particular resolver style.
Syntax:
public LocalDate resolveDate(
Map fieldValues,
ResolverStyle resolverStyle)
Parameter: This method takes the following argument as a parameter:
- fieldvalues: this will contain the chrono fields.
- resolverStyle: this will resolve the chrono field and provide the date.
Return Value: This method returns the local date according to Iso calendar by parsing Chrono field associated with a particular long value in a map with the help of particular resolver style.
Below are the examples to illustrate the resolveDate() method:
Example 1:
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.*;
import java.time.format.*;
public class GFG {
public static void main(String[] argv)
{
try {
LocalDate hidate
= LocalDate.now();
IsoChronology crono
= hidate.getChronology();
HashMap<TemporalField, Long> map
= new HashMap<TemporalField, Long>();
map.put((TemporalField)
ChronoField.EPOCH_DAY,
30l);
hidate
= crono.resolveDate(
map,
ResolverStyle.LENIENT);
System.out.println( "LocalDate is : "
+ hidate);
}
catch (DateTimeException e) {
System.out.println( "passed parameter can"
+ " not form a date" );
System.out.println( "Exception thrown: "
+ e);
}
}
}
|
Output:
LocalDate is : 1970-01-31
Example 2:
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.*;
import java.time.format.*;
public class GFG {
public static void main(String[] argv)
{
try {
LocalDate hidate
= LocalDate.now();
IsoChronology crono
= hidate.getChronology();
HashMap<TemporalField, Long> map
= new HashMap<TemporalField, Long>();
map.put((TemporalField)
ChronoField.HOUR_OF_AMPM,
2000l);
hidate
= crono.resolveDate(
map,
ResolverStyle.LENIENT);
System.out.println( "LocalDate is : "
+ hidate);
}
catch (DateTimeException e) {
System.out.println(
"passed parameter can"
+ " not form a date" );
System.out.println(
"Exception thrown: "
+ e);
}
}
}
|
Output:
LocalDate is : null
Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/IsoChronology.html#resolveDate-java.util.Map-java.time.format.ResolverStyle-
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