import java.time.Instant;
import java.time.LocalTime;
import java.time.OffsetDateTime;
import java.time.ZoneOffset;
 
public class Main {
	public static void main(String[] args) {
		String myStringTime = "12:30:10";
		long myLongDateAndTime = 1628197200000L;
 
		LocalTime time = LocalTime.parse(myStringTime);
		System.out.println(time);
 
		Instant instant = Instant.ofEpochMilli(myLongDateAndTime);
		System.out.println(instant);
 
		OffsetDateTime odt = instant.atOffset(ZoneOffset.of("-04:00"));
		System.out.println(odt);
 
		odt = odt.with(time);
		System.out.println(odt);
	}
}

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