Java tutorial
//package com.java2s; import java.util.Calendar; import java.util.Date; public class Main { public static long endOfThisMonth() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.DAY_OF_MONTH, 1); cal.set(Calendar.HOUR_OF_DAY, 23); cal.set(Calendar.MINUTE, 59); cal.set(Calendar.SECOND, 59); cal.set(Calendar.MILLISECOND, 999); cal.add(Calendar.MONTH, 1); cal.add(Calendar.DATE, -1); Date date = cal.getTime(); return date.getTime(); } }