Here you can find the source of getFirstDayOfCurMonth()
public static String getFirstDayOfCurMonth()
//package com.java2s; //License from project: Open Source License import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.GregorianCalendar; public class Main { public static String getFirstDayOfCurMonth() { Calendar calendar = new GregorianCalendar(); calendar.set(Calendar.DATE, 1); SimpleDateFormat simpleFormate = new SimpleDateFormat("yyyy-MM-dd"); return simpleFormate.format(calendar.getTime()).trim(); }/* ww w . j av a 2s . c o m*/ public static String format(java.util.Date date, String format) { String result = ""; try { if (date != null) { java.text.DateFormat df = new java.text.SimpleDateFormat(format); result = df.format(date); } } catch (Exception e) { } return result; } public static String format(java.util.Date date) { return format(date, "yyyy/MM/dd"); } public static String getTime(java.util.Date date) { return format(date, "HH:mm:ss"); } }