Java tutorial
//package com.java2s; import java.text.SimpleDateFormat; import java.util.Calendar; public class Main { public static String getYestoryDate() { Calendar calendar = Calendar.getInstance(); calendar.add(Calendar.DATE, -1); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String yestoday = sdf.format(calendar.getTime()); return yestoday; } public static String getTime(long timeStamp) { String time = null; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String date = sdf.format(timeStamp * 1000); String[] split = date.split("\\s"); if (split.length > 1) { time = split[1]; } return time; } }