Here you can find the source of getYesterdayDate(String format)
public static String getYesterdayDate(String format)
//package com.java2s; //License from project: Apache License import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; public class Main { public static String getYesterdayDate(String format) { Calendar day = Calendar.getInstance(); day.add(Calendar.DATE, -1); SimpleDateFormat sdf = new SimpleDateFormat(format);// "yyyy-MM-dd" String date = sdf.format(day.getTime()); return date; }/*from ww w . j a v a 2 s . c o m*/ public static String format(Date aTs_Datetime) { return format(aTs_Datetime, "yyyy-MM-dd"); } public static String format(Date aTs_Datetime, String as_Pattern) { if (aTs_Datetime == null || as_Pattern == null) return null; SimpleDateFormat dateFromat = new SimpleDateFormat(); dateFromat.applyPattern(as_Pattern); return dateFromat.format(aTs_Datetime); } public static String getTime(Date date) { SimpleDateFormat formatter_f = new SimpleDateFormat("yyyy-MM-dd"); String str = formatter_f.format(date); return str; } }