Calculate the number of days for the difference between two dates

* Calculate the number of days between two dates (there is no sequence requirement; The format can be 20080808)
*
* @ Param str1
* String
* @ Param str2
* String
* @ Return int
*/
Public static int getdatedifference (string str1, string str2 ){
Java. util. Date date1 = NULL;
Java. util. Date date2 = NULL;
Simpledateformat format = new simpledateformat ("yyyymmdd ");
Try {
Date1 = format. parse (str1 );
Date2 = format. parse (str2 );
} Catch (exception e ){
System. Out. println ("date conversion error:" + E );
}
Long I1 = date1.gettime ();
Long I2 = date2.gettime ();
Long temp = (I1-I2)/(24x60*60*1000 );
Temp = java. Lang. Math. Abs (temp );
Int days = (INT) temp;
Return days;
}