java - Using reflection to set all of an object’s fields from SQL results -


the java tutorials oracle include page, class literals runtime-type tokens.

the code there shows how passing class object argument can used generics define type of object being instantiated newinstance(). example code goes on mention in comments:

use reflection , set of item's fields sql results. 

collection<empinfo> emps = sqlutility.select(empinfo.class, "select * emps"); ... public static <t> collection<t> select(class<t> c, string sqlstatement) {      collection<t> result = new arraylist<t>();     /* run sql query using jdbc. */     (/* iterate on jdbc results. */ ) {          t item = c.newinstance();          /* use reflection , set of item's          * fields sql results.           */           result.add(item);     }      return result;  }

i wondering such code looks use reflection populate object’s fields results of row resultset.

➠does care post example of such code?

my interest see example of reflection in action, , see how 1 might match members/properties of object fields of database row. whether approach optimal or recommended not issue, need references jdbc frameworks needed here.


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