Current Time Code in JAVA

BD TIME.java

/*
@author Nasimuzzaman Nasim
*/

import javax.swing.JOptionPane;
import java.text.DecimalFormat;

public class Main
{
	public static void main(String args[])
	{
		DecimalFormat df1 = new DecimalFormat("00");
		long miliS = System.currentTimeMillis();
		long sec = miliS/1000;
		
		int currSec = (int) sec%60;
		
		long min = sec/60;
		int currMin = (int) min%60;
		
		long hour = min/60;
		int currHour = (int) (hour-1)%24;
		
		String time;
		if (currHour>12)
		{
			currHour = currHour%12;
			time = "PM";
		}
		else
			time = "AM";
		
		JOptionPane.showMessageDialog(null,df1.format (currHour) + " : "
		+ df1.format(currMin) + " : " + df1.format(currSec) + " " + time,
				"Current BD Time",JOptionPane.INFORMATION_MESSAGE);
	}
}