java - Reference to row in JTable -

jtable stores rows can added, deleted, shuffled, dynamically. in implementation row represent download, progress can dynamically updated, passing value of 1 of unique attribute called id. how map id actual row?

iterating on column not efficient approach. there way dynamically synchronize hashmap<id,object[]> jtable, such given key can update corresponding row, , vice versa?

private dfttasks=new defaulttablemodel(); public void addtask(string type, string name, int progress, int sessionid) {     object[] rowdata={type,name,new integer(progress),new integer(sessionid)};           dfttasks.addrow(rowdata); }  public void updateprogress(int sessionid, int progress) {     int = dfttasks.getrow(sessionid); //<--alternative method     dfttasks.setvalueat(new integer(progress), i, 2); //2nd column=progress } 

1. create class encapsulate data (eg type, name, progress, , id).
2. store instance of (1) in list, , if necessary other data structure quick access (eg map keyed id). order of list row order of table.
3. extend abstracttablemodel, , implement necessary methods return values list (1) , (2) based upon row/column.
4. when values of instances (2) changed (eg, progress updated), call firexxx within implementation in (3) (the source of defaulttablemodel example of how done)