import java.awt.BorderLayout;

import java.awt.GridLayout;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

import java.util.TimeZone;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JSpinner;

import javax.swing.SpinnerDateModel;

public class Main {

String[] zones = { "Asia/Tokyo", "Asia/Hong_Kong", "Asia/Calcutta",

"Europe/Paris", "Europe/London", "America/New_York",

"America/Los_Angeles" };

JLabel[] labels = new JLabel[zones.length];

SimpleDateFormat[] formats = new SimpleDateFormat[zones.length];

JSpinner spinner;

SpinnerDateModel model = new SpinnerDateModel();

SimpleDateFormat format;

JPanel panel;

JFrame frame = new JFrame();

public Main() {

Calendar cal = Calendar.getInstance();

Date date = cal.getTime();

model.setValue(date);

spinner = new JSpinner(model);

spinner.addChangeListener(e -> {

Date d = (Date) ((JSpinner) e.getSource()).getValue();

for (int i = 0; i < labels.length; i++) {

labels[i].setText(formats[i].format(d));

}

});

format = ((JSpinner.DateEditor) spinner.getEditor()).getFormat();

format.setTimeZone(TimeZone.getTimeZone(zones[0]));

format.applyPattern("yyyy-MM-dd HH:mm:ss");

format.applyPattern("HH:mm:ss");

panel = new JPanel(new GridLayout(zones.length, 2, 10, 10));

for (int i = 0; i < zones.length; i++) {

formats[i] = new SimpleDateFormat("yyyy-MMM-dd HH:mm:ss");

formats[i] = new SimpleDateFormat("HH:mm:ss");

formats[i].setTimeZone(TimeZone.getTimeZone(zones[i]));

JLabel label = new JLabel(zones[i]);

labels[i] = new JLabel(formats[i].format(date));

labels[i].setHorizontalAlignment(JLabel.RIGHT);

panel.add(label);

panel.add(labels[i]);

}

frame.setLayout(new BorderLayout(10, 10));

frame.add(spinner, BorderLayout.NORTH);

frame.add(panel, BorderLayout.CENTER);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.pack();

frame.setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}