mysql - How can I sort excel file by the first column? java -


i have make program read data excel files 1 here enter image description here
, store them in table in mysql descending id. have made program read data , print them in console using apache poi, create table first row of excel file , store rest data. storing happen ids. made function first read first column ids , read rest data using linkedhashmap.

how sorting in ids?could me? have put spaces think changes should made.

add each tablerow list. use collections sort() method sort data , iterate through , insert.

you can customize compareto() determine order.

@override public int compareto(tablerow o) {     // descending order     return this.getid().compareto(o.getid())*(-1); }

using comparator, can :

 new comparator<tablerow>() {         @override         public int compare(tablerow o1, tablerow o2) {              // descending order             return o1.getid().compareto(o.getid())*(-1);         }   }

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