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public static String dateToString(Date d){
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String s=sdf.format(d);
return s;
}
public static String dateToYear(Date d){
SimpleDateFormat sdf=new SimpleDateFormat("yyyy");
String s=sdf.format(d);
return s;
}
public static String dateToMonth(Date d){
SimpleDateFormat sdf=new SimpleDateFormat("MM");
String s=sdf.format(d);
return s;
}
public static Date stringToDate(String s) throws ParseException{
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
Date d=sdf.parse(s);
return d;
}


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