This is my program for Biodata in applet using JFrame

import javax.swing.*;
import java.awt.*;

public class Biodata extends JFrame
{
JLabel jlname,jladd,jlmobno,jldob,jlgender,jltab,jlhob,jllang;
JTextField jtname,jtmobno;
JTextArea jtadd;
JComboBox jcd,jcm,jcy;
JRadioButton jrm,jrf;
ButtonGroup bg;
JTable jtedu;
JScrollPane jsp,jshob;
JList jlhobby;
JCheckBox jc1,jc2,jc3;
JButton jb1,jb2;
JPanel jpr,jpcombo,jpcheck;
JFrame jf;
Biodata()
{
jf=new JFrame("Biodata");
jpr=new JPanel();
jf.setSize(500,500);
jf.setLayout(new GridLayout(9,2));
jlname=new JLabel("Enter Name : ");
jladd=new JLabel("Enter Address : ");
jlmobno=new JLabel("Enter Mobile No. : ");
jldob=new JLabel("DOB : ");
jlgender=new JLabel("Choose Gender : ");
jltab=new JLabel("Education details : ");
jlhob=new JLabel("Hobby : ");
jllang=new JLabel("Choose Language : ");
jtname=new JTextField(10);
jtmobno=new JTextField(10);
jcd=new JComboBox();
int i=1;
while(i<32)
{
    Integer i1=new Integer(i);
    String s=i1.toString();
    jcd.addItem(s);
    i++;
}
jcm=new JComboBox();
i=1;
while(i<13)
{
    Integer i1=new Integer(i);
    String s=i1.toString();
    jcm.addItem(s);
    i++;
}
jcy=new JComboBox();
i=1900;
while(i<2005)
{
    Integer i1=new Integer(i);
    String s=i1.toString();
    jcy.addItem(s);
    i++;
}
jtadd=new JTextArea(10,10);
jpcombo=new JPanel();
jrm=new JRadioButton("Male");
jrf=new JRadioButton("Female");
bg=new ButtonGroup();
bg.add(jrm);
bg.add(jrf);
Object cols[]={"Year","Degree","Percentage"};
Object data[][]={{"2010","SSC","90%"},{"2012","HSC","90%"},{"2015","BScIT","90%"}};
jtedu=new JTable(data,cols);
jsp=new JScrollPane(jtedu);
Object listdata[]={"Cricket","Football","Tennis","Reading","Chess","Volleyball"};
jlhobby=new JList(listdata);
jshob=new JScrollPane(jlhobby);
jc1=new JCheckBox("Marathi");
jc2=new JCheckBox("Hindi");
jc3=new JCheckBox("English");
jpcheck=new JPanel();
jb1=new JButton("Submit");
jb2=new JButton("Reset");
jf.add(jlname);
jf.add(jtname);
jf.add(jladd);
jf.add(jtadd);
jf.add(jlmobno);
jf.add(jtmobno);
jf.add(jldob);
jpcombo.add(jcd);
jpcombo.add(jcm);
jpcombo.add(jcy);
jf.add(jpcombo);
jpr.add(jrm);
jpr.add(jrf);
jf.add(jlgender);
jf.add(jpr);
jf.add(jltab);
jf.add(jsp);
jf.add(jlhob);
jf.add(jshob);
jpcheck.add(jc1);
jpcheck.add(jc2);
jpcheck.add(jc3);
jf.add(jllang);
jf.add(jpcheck);
jf.add(jb1);
jf.add(jb2);
jf.setVisible(true);
jf.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public static void main(String args[])
{
    new Biodata();
}
}

Following is shown if -Xlint is done

D:\java\jclg>javac Biodata.java -Xlint
Biodata.java:9: warning: [rawtypes] found raw type: JComboBox
JComboBox jcd,jcm,jcy;
^
  missing type arguments for generic class JComboBox<E>
  where E is a type-variable:
    E extends Object declared in class JComboBox
Biodata.java:9: warning: [rawtypes] found raw type: JComboBox
JComboBox jcd,jcm,jcy;
^
  missing type arguments for generic class JComboBox<E>
  where E is a type-variable:
    E extends Object declared in class JComboBox
Biodata.java:9: warning: [rawtypes] found raw type: JComboBox
JComboBox jcd,jcm,jcy;
^
  missing type arguments for generic class JComboBox<E>
  where E is a type-variable:
    E extends Object declared in class JComboBox
Biodata.java:14: warning: [rawtypes] found raw type: JList
JList jlhobby;
^
  missing type arguments for generic class JList<E>
  where E is a type-variable:
    E extends Object declared in class JList
Biodata.java:35: warning: [rawtypes] found raw type: JComboBox
jcd=new JComboBox();
        ^
  missing type arguments for generic class JComboBox<E>
  where E is a type-variable:
    E extends Object declared in class JComboBox
Biodata.java:41: warning: [unchecked] unchecked call to addItem(E) as a member o
f the raw type JComboBox
        jcd.addItem(s);
                   ^
  where E is a type-variable:
    E extends Object declared in class JComboBox
Biodata.java:44: warning: [rawtypes] found raw type: JComboBox
jcm=new JComboBox();
        ^
  missing type arguments for generic class JComboBox<E>
  where E is a type-variable:
    E extends Object declared in class JComboBox
Biodata.java:50: warning: [unchecked] unchecked call to addItem(E) as a member o
f the raw type JComboBox
        jcm.addItem(s);
                   ^
  where E is a type-variable:
    E extends Object declared in class JComboBox
Biodata.java:53: warning: [rawtypes] found raw type: JComboBox
jcy=new JComboBox();
        ^
  missing type arguments for generic class JComboBox<E>
  where E is a type-variable:
    E extends Object declared in class JComboBox
Biodata.java:59: warning: [unchecked] unchecked call to addItem(E) as a member o
f the raw type JComboBox
        jcy.addItem(s);
                   ^
  where E is a type-variable:
    E extends Object declared in class JComboBox
Biodata.java:74: warning: [rawtypes] found raw type: JList
jlhobby=new JList(listdata);
            ^
  missing type arguments for generic class JList<E>
  where E is a type-variable:
    E extends Object declared in class JList
Biodata.java:74: warning: [unchecked] unchecked call to JList(E[]) as a member o
f the raw type JList
jlhobby=new JList(listdata);
        ^
  where E is a type-variable:
    E extends Object declared in class JList
Biodata.java:4: warning: [serial] serializable class Biodata has no definition o
f serialVersionUID
public class Biodata extends JFrame
       ^
13 warnings

I have did several programs using swing & found those warning various times.
Finally I thought that I have to ask it here to understand what actually this warnings are there.
Still it is not actually affecting the output but Is there anyway to solve this problem?

Thanx for help but what about this

Biodata.java:4: warning: [serial] serializable class Biodata has no definition o
f serialVersionUID
public class Biodata extends JFrame
       ^

how to solve this???
This is only the thing remained now

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