typecast list to string using hibernate in java -

I tried to type list data on string, but the error shown as java.lang.ClassCastException: java Can not .lang.String be inserted into Java.util.List please help me solve this problem. This is done using hibernate.

 for  (int i2 = 1; i2 & lt; = gantttablecolnameList.size (+; I2) {columnname = (string) ((list) gantttablecolnameList.get (i1)) Obtain (0); }   
 This list contains table column names.   
 
 
 If your  list gantttablecolnameList  actually  string  , Then try:  
 for  (int i2 = 0; i2 & lt; gantttablecolnameList.size (); i2 ++) {Columnname = (string) (Gentle colnameList.get ( I2)); }   
 You are doing this:  
  (list) gantttablecolnameList.get (i1)   
 Code> list gantttablecolnameList  in  string ,  gantttablecolnameList.get (i1)  gives you an  object  which is actually a  The string  example for the index specified by the runtime value of  i1  So, in a nutshell you are trying this:  
  (list) "someString";   
 Which is impossible.