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A log library that embraces the kiss principle.

There is a newer version: 2.1.2

package org.mentalog.util;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

public class DateTimeFormatter {
	
	private final SimpleDateFormat dateFormatter = new SimpleDateFormat("ddMMyyyy");
	private final SimpleDateFormat timeFormatter = new SimpleDateFormat("HH:mm:ss.SSS");
	
	public DateTimeFormatter(TimeZone tz) {
		dateFormatter.setTimeZone(tz);
		timeFormatter.setTimeZone(tz);
	}
	
	public DateTimeFormatter() {
		this(TimeZone.getDefault());
	}
	
	public char[] getDay(long now) { 
		Date d = new Date(now);
		String s = dateFormatter.format(d);
		return s.substring(0,2).toCharArray();
	}
	
	public char[] getMonth(long now) {
		Date d = new Date(now);
		String s = dateFormatter.format(d);
		return s.substring(2,4).toCharArray();
	}
	
	public char[] getYear(long now) { 
		Date d = new Date(now);
		String s = dateFormatter.format(d);
		return s.substring(4,8).toCharArray();
	}
	
	public void changeTimeZone(TimeZone tz) {
		dateFormatter.setTimeZone(tz);
		timeFormatter.setTimeZone(tz);
	}
	
    public char[] formatTime(long timeInMillis) {
    	Date d = new Date(timeInMillis);
    	String s = timeFormatter.format(d);
    	return s.toCharArray();
    }
    
    public void formatTimeTo(StringBuilder sb, long timeInMillis) {
    	
    	char[] time = formatTime(timeInMillis);
    	
    	for(int i = 0; i < time.length; i++) {
    		
    		sb.append(time[i]);
    	}
    }
    
    public static void main(String[] args) {
    	
    	DateTimeFormatter formatter = new DateTimeFormatter();
    	
    	long now = System.currentTimeMillis();
    
    	System.out.println("F: " + new String(formatter.formatTime(now)));
    	
    	System.out.println("DAY: " + new String(formatter.getDay(now)));
    	System.out.println("MONTH: " + new String(formatter.getMonth(now)));
    	System.out.println("YEAR: " + new String(formatter.getYear(now)));
    }

}