how to update checkbox list in database

how to update checkbox list in database

Issues: i am using different checkboxs for getting role then all role list store in one string array i want to update one by one but it's not updating by using below code .it's not adding new entry.plz kindly help about this issues( when i am inserting any record in the database below logic is working fine by using insert command )

EditRole.java file 1) Role_Id = request.getParameter("RoleId"); String[] role= request.getParameterValues("role"); int result=0; try { db = new DataBase(); { for(int j=0;jid= '"+RoleId+"'"; ut.println("row value"+role[j]); result = db.executeUpdate(query); } }

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