swing - Java order jlist by status -

i have small problem, don't know how sort jlist status retrieved database. want sort "online" , "offline", mean online computers go first , offline computers, have code now, makes icon+text jlist

can tell me how can filter/sortby status?

public void acx_pc(string query) {     try {         statement st = con.createstatement();         resultset rs = st.executequery(query);         string comb;         map<object, icon> icons = new hashmap<>();         arraylist<string> pc_list = new arraylist<>();         int = 0;           while (rs.next()) {             //getting info db              string pc_name = rs.getstring("nombre_pc");             string pc_ip = rs.getstring("ip");             string status = rs.getstring("estado");             //setting text jlist             comb = pc_name + " - " + pc_ip;             //comparing status             switch (status) {                 case "online":                     //this rendering image+text jlist                     icons.put(comb, new imageicon(getclass().getresource("/imagenes/com_on_30x30.png")));                      break;                 case "offline":                      //this rendering image jlist                     icons.put(comb, new imageicon(getclass().getresource("/imagenes/com_off_30x30.png")));                     break;             }             //adding info arraylist             pc_list.add(i, comb);             i++;          }          con.close();         // setting list/text on jlist         home.computer_jlist.setlistdata(pc_list.toarray());         // create cell renderer add appropriate icon         home.computer_jlist.setcellrenderer(new pc_cell_render(icons));      } catch (exception e) {         system.out.println("error aqui: " + e);      } } 

i want (should automatically order) http://imageshack.us/a/img27/9018/2mx1.png

and not: http://imageshack.us/a/img407/346/e9r.png

you can sort pc_list using collections.sort utility method custom comparator.

however, that's overkill. easier use 2 lists:

arraylist<string> pc_list = new arraylist<>(); arraylist<string> pc_offline_list = new arraylist<>();  // . . .  switch (status) {     case "online":         //this rendering image+text jlist         icons.put(comb, new imageicon(getclass().getresource("/imagenes/com_on_30x30.png")));         pc_list.add(comb);         break;     case "offline":          //this rendering image jlist         icons.put(comb, new imageicon(getclass().getresource("/imagenes/com_off_30x30.png")));         pc_offline_list.add(comb);         break; }  // . . .  pc_list.addall(pc_offline_list); home.computer_jlist.setlistdata(pc_list.toarray()); 

so keep offline ones separate @ first, , tack them onto end 1 you've found them all. keeping them separate avoid having sorting!

also, add method adds end (appends) default, you'll notice wrote pc_list.add(comb) instead of pc_list.add(i, comb).