Here you can find the source of getOffsetMonth(Date pDate, int offset, String pFormat)
public static String getOffsetMonth(Date pDate, int offset, String pFormat) throws Exception
//package com.java2s; //License from project: GNU General Public License import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; public class Main { public static String getOffsetMonth(Date pDate, int offset, String pFormat) throws Exception { SimpleDateFormat fmt = new SimpleDateFormat(pFormat); Calendar c = Calendar.getInstance(); String ret = ""; try {/*from w ww . j a v a2 s .c o m*/ c.setTime(pDate); c.add(Calendar.MONTH, offset); ret = fmt.format(c.getTime()); } catch (Exception e) { } return ret; } public static String getOffsetMonth(String strDate, int offset, String pFormat) throws Exception { SimpleDateFormat fmt = new SimpleDateFormat(pFormat); Date date = fmt.parse(strDate); return getOffsetMonth(date, offset, pFormat); } public static String getOffsetMonth(int offset, String pFormat) throws Exception { Date date = new Date(); return getOffsetMonth(date, offset, pFormat); } }