Как получить правильное время в формате hh:ss?

Calendar time = new GregorianCalendar();
String t = time.getTime().ToString();

Calendar time = new GregorianCalendar();
SimpleDateFormat dateFormat = new SimpleDateFormat("hh:ss");
dateFormat.setCalendar(time);
String t = dateFormat.format(time.getTime());

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Collectors;
 
 
public class OneTest {
 
static int n;
static String S,ch;
 
public static void main(String args[]) {
 
    Scanner s = new Scanner(System.in);
 
    
    Calendar time = new GregorianCalendar();
 
 
    SimpleDateFormat date = new SimpleDateFormat("hh:mm:ss");
 
    date.setCalendar(time);
    String t = date.format(time.getTime());
    System.out.println(t);
}
 
 
}

time.setTimeZone(TimeZone.getTimeZone("Europe/Moscow"));

time.setTimeZone(TimeZone.getTimeZone("Europe/Kiev"));

        Calendar calendar = Calendar.getInstance();
        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
        String date = sdf.format(calendar.getTime());
        System.out.println("date = " + date);

Stream.of(TimeZone.getAvailableIDs()).filter(z -> z.matches(".*Kh.*")).forEach(System.out::println);