Insert data into mysql table using java applets -

i have been given college assignment insert data mysql table using java applets. when press submit button, command prompt throws lot of exceptions(pic attached) , no data inserted table.

following code:

//student registration form (using applets , awt controls) import java.awt.*; import java.awt.event.*; import java.applet.*; import java.sql.*; import java.util.*;  public class mysql4 extends applet implements actionlistener{      label l1 = new label("roll no. : ");     textfield t1 = new textfield("",10);     label l2 = new label("name : ");     textfield t2 = new textfield("",20);     label l3 = new label("gender : ");     checkboxgroup radiogroup = new checkboxgroup();      checkbox r1 = new checkbox("male", radiogroup, false);      checkbox r2 = new checkbox("female", radiogroup, true);     label l4 = new label("hobbies : ");     checkbox c1 = new checkbox("sports");     checkbox c2 = new checkbox("cooking/gardening");     checkbox c3 = new checkbox("music");     checkbox c4 = new checkbox("arts/crafts");     label l5 = new label("course opted : ");     choice l=new choice();     label l6 = new label("feedback : ",label.center);     textarea ta = new textarea("",15,20);     button b1 = new button("submit");     button b2 = new button("reset");     public void init() {         l1.setalignment(label.center);         add(l1);         add(t1);              add(l2);         add(t2);             add(l3);         add(r1);         add(r2);         add(l4);         add(c1);         add(c2);         add(c3);         add(c4);          add(l5);         l.add("bca");         l.add("mca");         l.add("pgdca");         add(l);         add(l6);         add(ta);         b1.addactionlistener(this);          add(b1);         b2.addactionlistener(this);         add(b2);     }     public void actionperformed(actionevent e){         if(e.getsource()==b1){             try{                 string mydriver = "com.mysql.jdbc.driver";                 string myurl = "jdbc:mysql://localhost:3306/sonoo?usessl=false";                 class.forname(mydriver);                 connection con = drivermanager.getconnection(myurl, "root", "12345678");                 string query = "insert details (rollno, name, gender, hobbies, course, feedback)" + " values (?, ?, ?, ?, ?, ?)";                 preparedstatement ps = con.preparestatement(query);                 ps.setstring (1, l1.gettext());                 ps.setstring (2, l2.gettext());                 checkbox chkr = radiogroup.getselectedcheckbox();                 ps.setstring (3, chkr.getlabel());                 checkbox chk = radiogroup.getselectedcheckbox();                 ps.setstring (4, chk.getlabel());                 ps.setstring (5, l.getselecteditem());                 ps.setstring (6, ta.gettext());                 ps.execute();                 con.close();             }catch(exception ex){                  ex.printstacktrace();                   system.out.println(ex.getmessage());             }         }else if(e.getsource()==b2){             t1.settext(" ");             t2.settext(" ");             r1.setstate(false);             r2.setstate(true);             c1.setstate(false);             c2.setstate(false);             c3.setstate(false);             c4.setstate(false);             l.select("bca");             ta.settext(" ");         }else{}     } } 

output:

appletlayout:

you're getting accesscontrolexception when driver trying read file.encoding property. applet needs given permission driver work.