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Set Date value in Java HashMap?
Create a Calendar instance and Date object −
Calendar cal = Calendar.getInstance(); Date date = new Date(); cal.setTime(date);
Now, create a HashMap and store Date value −
LinkedHashMap<String, Integer>hashMap = new LinkedHashMap<String, Integer>();
hashMap.put("year", cal.get(Calendar.YEAR));
hashMap.put("month", cal.get(Calendar.MONTH));
hashMap.put("day", cal.get(Calendar.DAY_OF_MONTH));Example
import java.util.Calendar;
import java.util.Date;
import java.util.LinkedHashMap;
public class Demo {
public static void main(String[] argv) {
Calendar cal = Calendar.getInstance();
Date date = new Date();
System.out.println("Date = "+date);
cal.setTime(date);
LinkedHashMap<String, Integer>hashMap = new LinkedHashMap<String, Integer>();
hashMap.put("year", cal.get(Calendar.YEAR));
hashMap.put("month", cal.get(Calendar.MONTH));
hashMap.put("day", cal.get(Calendar.DAY_OF_MONTH));
System.out.println("HashMap (Date) = "+hashMap);
hashMap.put("hour", cal.get(Calendar.HOUR_OF_DAY));
hashMap.put("minute", cal.get(Calendar.MINUTE));
hashMap.put("second", cal.get(Calendar.SECOND));
hashMap.put("millisecond", cal.get(Calendar.MILLISECOND));
System.out.println("HashMap (DateTime) = "+hashMap);
}
}Output
Date = Fri Apr 19 17:45:24 IST 2019
HashMap (Date) = {year=2019, month=3, day=19}
HashMap (DateTime) = {year=2019, month=3, day=19, hour=17, minute=45, second=24, millisecond=98}
Updated on: 30-Jul-2019
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