i have the following code but it has some sorts of error whenever i run the page after validation through javascript it calls for the servlets and then i tried to retrive the parameters but it is always showing me null values. My Html page is like this

<form action="sfkcreateaccount" method="post">
                <table style="width: 940px">
                    <tr>
                        <td style="width: 450px; margin: 5px; padding: 5px">
                            <div>
                                <table>
                                    <tr>
                                        <td>
                                            First Name:
                                        </td>
                                        <td>
                                            <input type="text" id="fname" placeholder="First Name" style="width: 157px" maxlength="2048">
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>
                                            Last Name:
                                        </td>
                                        <td>
                                            <input type="text" id="lname" placeholder="Last Name" style="width: 157px" maxlength="2048">
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>
                                            Choose Password:
                                        </td>
                                        <td>
                                            <input type="password" id="pwd1" placeholder="Choose Password" style="width: 157px" maxlength="40">
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>
                                            Choose Username:
                                        </td>
                                        <td>
                                            <input type="text" id="uname1" placeholder="Choose Username" style="text-transform: lowercase; width: 157px;" maxlength="100">
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>
                                            Gender:
                                        </td>
                                        <td>
                                            <input type="radio" name="gender" value="Male" checked="checked" id="male"><label for="male">Male</label>
                                            <input type="radio" name="gender" value="Female" id="female"><label for="female">Female</label>
                                        </td>
                                    </tr>                                        
                                </table>
                            </div>
                        </td>
                        <td style="width: 450px; margin: 5px;padding: 5px">
                            <div>
                                <table>
                                    <tr>
                                        <td>
                                            Middle Name:
                                        </td>
                                        <td>
                                            <input type="text" id="mname" placeholder="Middle Name" style="width: 157px" maxlength="2048">
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>
                                            Date of Birth:
                                        </td>
                                        <td>
                                            <input type="date" id="dob" placeholder="MM/DD/YYYY" style="width: 157px">
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>
                                            Verify Password:
                                        </td>
                                        <td>
                                            <input type="password" id="pwd2" placeholder="Verify Password" style="width: 157px" maxlength="40">
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>
                                            Verify Username:
                                        </td>
                                        <td>
                                            <input type="text" id="uname2" placeholder="Verify Username" style="text-transform: lowercase; width: 157px" maxlength="100">
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>
                                            Country:
                                        </td>
                                        <td>
                                            <select style="width: 157px" id="cntri">
                                                <option value="-1">Select Your Country</option>
                                                <option value="AF">Afghanistan</option> 
                                                <option value="AX">Ã?â?¦land Islands </option>
                                                <option value="AL">Albania </option>
                                                <option value="DZ">Algeria </option>
                                                <option value="AS">American Samoa </option>
                                                <option value="AD">AndorrA </option>
                                                <option value="AO">Angola </option>
                                                <option value="AI">Anguilla </option>
                                                <option value="AQ">Antarctica </option>
                                                <option value="AG">Antigua and Barbuda</option> 
                                                <option value="AR">Argentina </option>
                                                <option value="AM">Armenia </option>
                                                <option value="AW">Aruba </option>
                                                <option value="AU">Australia</option> 
                                                <option value="AT">Austria </option> 
                                                <option value="AZ">Azerbaijan </option>
                                                <option value="BS">Bahamas</option>
                                                <option value="BH">Bahrain </option>
                                                <option value="BD">Bangladesh </option>
                                                <option value="BB">Barbados </option>
                                                <option value="BY">Belarus </option>
                                                <option value="BE">Belgium </option>
                                                <option value="BZ">Belize </option>
                                                <option value="BJ">Benin</option>
                                                <option value="BM">Bermuda</option>
                                                <option value="BT">Bhutan</option>
                                                <option value="BO">Bolivia</option>
                                                <option value="BA">Bosnia and Herzegovina</option>
                                                <option value="BW">Botswana</option>
                                                <option value="BV">Bouvet Island</option>
                                                <option value="BR">Brazil</option>
                                                <option value="IO">British Indian Ocean Territory</option>
                                                <option value="BN">Brunei Darussalam</option>
                                                <option value="BG">Bulgaria</option>
                                                <option value="BF">Burkina Faso</option>
                                                <option value="BI">Burundi</option>  
                                                <option value="KH">Cambodia </option>
                                                <option value="CM">Cameroon </option>
                                                <option value="CA">Canada </option>
                                                <option value="CV">Cape Verde </option>
                                                <option value="KY">Cayman Islands </option>
                                                <option value="CF">Central African Republic</option>
                                                <option value="TD">Chad </option>
                                                <option value="CL">Chile </option>
                                                <option value="CN">China </option>
                                                <option value="CX">Christmas Island </option>
                                                <option value="CC">Cocos (Keeling) Islands </option>
                                                <option value="CO">Colombia </option>
                                                <option value="KM">Comoros </option>
                                                <option value="CG">Congo </option>
                                                <option value="CD">Congo, The Democratic Republic of the </option>
                                                <option value="CK">Cook Islands </option>
                                                <option value="CR">Costa Rica </option>
                                                <option value="CI">Cote D'Ivoire </option>
                                                <option value="HR">Croatia </option>
                                                <option value="CU">Cuba </option>
                                                <option value="CY">Cyprus </option>
                                                <option value="CZ">Czech Republic </option>                                                    
                                                <option value="DK">Denmark</option>  
                                                <option value="DJ">Djibouti</option> 
                                                <option value="DM">Dominica</option> 
                                                <option value="DO">Dominican Republic</option> 
                                                <option value="EC">Ecuador</option> 
                                                <option value="EG">Egypt</option> 
                                                <option value="SV">El Salvador</option> 
                                                <option value="GQ">Equatorial Guinea</option> 
                                                <option value="ER">Eritrea</option> 
                                                <option value="EE">Estonia</option> 
                                                <option value="ET">Ethiopia</option> 
                                                <option value="FK">Falkland Islands (Malvinas)</option> 
                                                <option value="FO">Faroe Islands</option> 
                                                <option value="FJ">Fiji</option> 
                                                <option value="FI">Finland</option> 
                                                <option value="FR">France</option> 
                                                <option value="GF">French Guiana</option> 
                                                <option value="PF">French Polynesia</option> 
                                                <option value="TF">French Southern Territories</option> 
                                                <option value="GA">Gabon</option> 
                                                <option value="GM">Gambia</option> 
                                                <option value="GE">Georgia</option> 
                                                <option value="DE">Germany</option> 
                                                <option value="GH">Ghana</option> 
                                                <option value="GI">Gibraltar</option> 
                                                <option value="GR">Greece</option> 
                                                <option value="GL">Greenland</option> 
                                                <option value="GD">Grenada</option> 
                                                <option value="GP">Guadeloupe</option> 
                                                <option value="GU">Guam</option> 
                                                <option value="GT">Guatemala</option> 
                                                <option value="GG">Guernsey</option> 
                                                <option value="GN">Guinea</option> 
                                                <option value="GW">Guinea-Bissau</option> 
                                                <option value="GY">Guyana</option> 
                                                <option value="HT">Haiti</option> 
                                                <option value="HM">Heard Island and Mcdonald Islands</option> 
                                                <option value="VA">Holy See (Vatican City State)</option> 
                                                <option value="HN">Honduras</option> 
                                                <option value="HK">Hong Kong</option> 
                                                <option value="HU">Hungary</option> 
                                                <option value="IS">Iceland</option> 
                                                <option value="IN">India</option> 
                                                <option value="ID">Indonesia</option> 
                                                <option value="IR">Iran, Islamic Republic Of</option> 
                                                <option value="IQ">Iraq</option> 
                                                <option value="IE">Ireland</option> 
                                                <option value="IM">Isle of Man</option> 
                                                <option value="IL">Israel</option> 
                                                <option value="IT">Italy</option> 
                                                <option value="JM">Jamaica</option> 
                                                <option value="JP">Japan</option> 
                                                <option value="JE">Jersey</option> 
                                                <option value="JO">Jordan</option> 
                                                <option value="KZ">Kazakhstan</option> 
                                                <option value="KE">Kenya</option> 
                                                <option value="KI">Kiribati</option> 
                                                <option value="KP">Korea, Democratic People'S Republic of</option> 
                                                <option value="KR">Korea, Republic of</option> 
                                                <option value="KW">Kuwait</option> 
                                                <option value="KG">Kyrgyzstan</option> 
                                                <option value="LA">Lao People'S Democratic Republic</option> 
                                                <option value="LV">Latvia</option> 
                                                <option value="LB">Lebanon</option> 
                                                <option value="LS">Lesotho</option> 
                                                <option value="LR">Liberia</option> 
                                                <option value="LY">Libyan Arab Jamahiriya</option> 
                                                <option value="LI">Liechtenstein</option> 
                                                <option value="LT">Lithuania</option> 
                                                <option value="LU">Luxembourg</option> 
                                                <option value="MO">Macao</option> 
                                                <option value="MK">Macedonia, The Former Yugoslav Republic of</option> 
                                                <option value="MG">Madagascar</option> 
                                                <option value="MW">Malawi</option> 
                                                <option value="MY">Malaysia</option> 
                                                <option value="MV">Maldives</option> 
                                                <option value="ML">Mali</option> 
                                                <option value="MT">Malta</option> 
                                                <option value="MH">Marshall Islands</option> 
                                                <option value="MQ">Martinique</option> 
                                                <option value="MR">Mauritania</option>     
                                                <option value="MU">Mauritius</option> 
                                                <option value="YT">Mayotte</option> 
                                                <option value="MX">Mexico</option> 
                                                <option value="FM">Micronesia, Federated States of</option> 
                                                <option value="MD">Moldova, Republic of</option> 
                                                <option value="MC">Monaco</option> 
                                                <option value="MN">Mongolia</option> 
                                                <option value="MS">Montserrat</option> 
                                                <option value="MA">Morocco</option> 
                                                <option value="MZ">Mozambique</option> 
                                                <option value="MM">Myanmar</option> 
                                                <option value="NA">Namibia</option> 
                                                <option value="NR">Nauru</option> 
                                                <option value="NP">Nepal</option> 
                                                <option value="NL">Netherlands</option> 
                                                <option value="AN">Netherlands Antilles</option> 
                                                <option value="NC">New Caledonia</option> 
                                                <option value="NZ">New Zealand</option> 
                                                <option value="NI">Nicaragua</option> 
                                                <option value="NE">Niger</option> 
                                                <option value="NG">Nigeria</option> 
                                                <option value="NU">Niue</option> 
                                                <option value="NF">Norfolk Island</option> 
                                                <option value="MP">Northern Mariana Islands</option> 
                                                <option value="NO">Norway</option> 
                                                <option value="OM">Oman</option> 
                                                <option value="PK">Pakistan</option> 
                                                <option value="PW">Palau</option> 
                                                <option value="PS">Palestinian Territory, Occupied</option> 
                                                <option value="PA">Panama</option> 
                                                <option value="PG">Papua New Guinea</option> 
                                                <option value="PY">Paraguay</option> 
                                                <option value="PE">Peru</option> 
                                                <option value="PH">Philippines</option> 
                                                <option value="PN">Pitcairn</option> 
                                                <option value="PL">Poland</option> 
                                                <option value="PT">Portugal</option> 
                                                <option value="PR">Puerto Rico</option> 
                                                <option value="QA">Qatar</option> 
                                                <option value="RE">Reunion</option> 
                                                <option value="RO">Romania</option> 
                                                <option value="RU">Russian Federation</option> 
                                                <option value="RW">RWANDA</option> 
                                                <option value="SH">Saint Helena</option> 
                                                <option value="KN">Saint Kitts and Nevis</option> 
                                                <option value="LC">Saint Lucia</option> 
                                                <option value="PM">Saint Pierre and Miquelon</option> 
                                                <option value="VC">Saint Vincent and the Grenadines</option> 
                                                <option value="WS">Samoa</option> 
                                                <option value="SM">San Marino</option>     
                                                <option value="ST">Sao Tome and Principe</option> 
                                                <option value="SA">Saudi Arabia</option>   
                                                <option value="SN">Senegal </option> 
                                                <option value="CS">Serbia and Montenegro</option> 
                                                <option value="SC">Seychelles</option> 
                                                <option value="SL">Sierra Leone</option> 
                                                <option value="SG">Singapore</option> 
                                                <option value="SK">Slovakia</option> 
                                                <option value="SI">Slovenia</option> 
                                                <option value="SB">Solomon Islands</option> 
                                                <option value="SO">Somalia</option> 
                                                <option value="ZA">South Africa</option> 
                                                <option value="GS">South Georgia and the South Sandwich Islands</option> 
                                                <option value="ES">Spain</option> 
                                                <option value="LK">Sri Lanka</option> 
                                                <option value="SD">Sudan</option> 
                                                <option value="SR">Suriname</option> 
                                                <option value="SJ">Svalbard and Jan Mayen</option> 
                                                <option value="SZ">Swaziland</option> 
                                                <option value="SE">Sweden</option> 
                                                <option value="CH">Switzerland</option> 
                                                <option value="SY">Syrian Arab Republic</option> 
                                                <option value="TW">Taiwan, Province of China</option> 
                                                <option value="TJ">Tajikistan</option> 
                                                <option value="TZ">Tanzania, United Republic of</option> 
                                                <option value="TH">Thailand</option> 
                                                <option value="TL">Timor-Leste</option> 
                                                <option value="TG">Togo</option> 
                                                <option value="TK">Tokelau</option> 
                                                <option value="TO">Tonga</option> 
                                                <option value="TT">Trinidad and Tobago</option> 
                                                <option value="TN">Tunisia</option> 
                                                <option value="TR">Turkey</option> 
                                                <option value="TM">Turkmenistan</option> 
                                                <option value="TC">Turks and Caicos Islands</option> 
                                                <option value="TV">Tuvalu</option> 
                                                <option value="UG">Uganda</option> 
                                                <option value="UA">Ukraine</option> 
                                                <option value="AE">United Arab Emirates</option> 
                                                <option value="GB">United Kingdom</option> 
                                                <option value="US">United States</option> 
                                                <option value="UM">United States Minor Outlying Islands</option> 
                                                <option value="UY">Uruguay</option> 
                                                <option value="UZ">Uzbekistan</option> 
                                                <option value="VU">Vanuatu</option>
                                                <option value="VE">Venezuela</option> 
                                                <option value="VN">Viet Nam</option>  
                                                <option value="VG">Virgin Islands, British</option>
                                                <option value="VT">Virgin Islands, U.S.</option>
                                                <option value="WF">Wallis and Futuna</option>
                                                <option value="EH">Western Sahara</option>
                                                <option value="YE">Yemen</option>
                                                <option value="ZM">Zambia</option>
                                                <option value="ZW">Zimbabwe</option>
                                            </select>
                                        </td>
                                    </tr>
                                </table>                        
                            </div>
                        </td>
                    </tr>
                </table>
                <div style="text-align: center;padding-top: 20px">

                        <input id="Create_Account_Control" type="submit" value="Create My New Account" style="border-width: 2px; border-radius: 6px; border-color: threeddarkshadow; background-color: snow; width: 180px; height: 25px;" onmousedown="musdown()" onmouseout="musout()" onmouseover="musover()" onmouseup="musup()" onkeypress="musdown()">

                </div>
                     </form>

After This i added Java Scripts by following

function musup()
{
    document.getElementById('Create_Account_Control').style.backgroundColor='#6f6';
    document.getElementById("Create_Account_Control").style.borderColor='threedshadow';
    document.getElementById("Create_Account_Control").style.fontStyle='italic';
    document.getElementById("Create_Account_Control").style.fontWeight='bold';
}
function musdown()
{
    document.getElementById('Create_Account_Control').style.backgroundColor='lightblue';
    document.getElementById("Create_Account_Control").style.borderColor='threedshadow';
    document.getElementById("Create_Account_Control").style.fontStyle='oblique';
    document.getElementById("Create_Account_Control").style.fontWeight='bold';
    click_action();
}
function musover()
{            
    document.getElementById('Create_Account_Control').style.backgroundColor='#6f6';
    document.getElementById("Create_Account_Control").style.borderColor='threedshadow';
    document.getElementById("Create_Account_Control").style.fontStyle='italic';
    document.getElementById("Create_Account_Control").style.fontWeight='bold';
}
function musout()
{
    document.getElementById('Create_Account_Control').style.backgroundColor='snow';
    document.getElementById("Create_Account_Control").style.borderColor='threeddarkshadow';
    document.getElementById("Create_Account_Control").style.fontStyle='normal';
    document.getElementById("Create_Account_Control").style.fontWeight='normal';
}
function click_action()
{
    var fname,mname,lname,pwd1,pwd2,uname1,uname2,gender,cntri,t,dob_year,dob_month,dob_date,current_year,current_month,current_date,temp,dob,current;
    t=new Date();
    fname=document.getElementById("fname").value;
    mname=document.getElementById("mname").value;
    lname=document.getElementById("lname").value;
    t=document.getElementById("dob").value;
    pwd1=document.getElementById("pwd1").value;
    pwd2=document.getElementById("pwd2").value;
    uname1=document.getElementById("uname1").value;
    uname2=document.getElementById("uname2").value;
    cntri=document.getElementById("cntri").value;
    temp=document.getElementsByName("gender");

    dob=new Date(t);
    current=new Date();

    dob_year=dob.getFullYear();
    dob_month=dob.getMonth();
    dob_date=dob.getDate();
    current_year=current.getFullYear();
    current_month=current.getMonth();
    current_date=current.getDate();

    if(fname.length<=0||mname.length<=0||lname.lenght<=0||pwd1.lenght<=0||pwd2.length<=0||uname1.length<=0||uname2.lenght<=0||cntri==-1)
    {
        alert("Please Fill All the Fields First");
    }
    else
    {
        if(t==null)
        {
            alert("Please Select your Birth Date")
        }
        else
        {
            if(current_year>=dob_year)
            {
                if(current_month>=dob_month)
                {
                    if(current_date>dob_date)
                    {
                        if(temp[0].checked == true || temp[1].checked == true )
                        { 
                            if(temp[0].checked==true)
                            {
                                gender=temp[0].value;
                            }
                            if(temp[1].checked==true)
                            {
                                gender=temp[1].value;
                            }
                           validity();
                        }    
                        else
                        {
                            alert("Please Select a Gender");
                        }
                    }
                    else
                    {
                        alert("Invalid Date");
                    }
                }
                else
                {
                    alert("Invalid month");
                }
            }
            else
            {
                alert("Invalid Year");
            }
        }
    }
}
function validity()
{
    var pwd1,pwd2,uname1,uname2;

    pwd1=document.getElementById("pwd1").value;
    pwd2=document.getElementById("pwd2").value;
    uname1=document.getElementById("uname1").value;
    uname2=document.getElementById("uname2").value;
    uname1.toString().toLowerCase();
    uname2.toString().toLowerCase();
        if(pwd1==pwd2)
        {
            if(uname1==uname2)
            {
                Name_validaton();
            }
            else
            {
                alert("Usernames didn't matches");
            }
        }
        else
        {
            alert("Passwords didn't matches");
        }
}
function Name_validaton()
{
    var fname,mname,lname;
    fname=document.getElementById("fname").value;
    mname=document.getElementById("mname").value;
    lname=document.getElementById("lname").value;

    f=String(fname);
    m=String(mname);
    l=String(lname);
    A0=String("?");
    A1=String("|");
    A2=String("\\");
    A3=String("[");
    A4=String("+");
    A5=String(")");
    A6=String("(");
    A7=String("*");
    A8=String("&");
    A9=String("^");
    B0=String("$");
    B1=String("$");
    B2=String("$");
    if(f.match("@")||m.match("@")||l.match("@")||f.match("!")||m.match("!")||l.match("!")||f.match("~")||m.match("~")||l.match("~")||f.match("`")||m.match("`")||l.match("`")||f.match("%")||m.match("%")||l.match("%")||f.match("#")||m.match("#")||l.match("#")||f.match("_")||m.match("_")||l.match("_")||f.match("=")||m.match("=")||l.match("=")||f.match("}")||m.match("}")||l.match("}")||f.match("{")||m.match("{")||l.match("{")||f.match("]")||m.match("]")||l.match("]")||f.match("\"")||m.match("\"")||l.match("\"")||f.match("'")||m.match("'")||l.match("'")||f.match(";")||m.match(";")||l.match(";")||f.match(":")||m.match(":")||l.match(":")||f.match(",")||m.match(",")||l.match(",")||f.match("<")||m.match("<")||l.match("<")||f.match(">")||m.match(">")||l.match(">")||f.match("/")||m.match("/")||l.match("/")||f.match("0")||f.match("1")||f.match("2")||f.match("3")||f.match("4")||f.match("5")||f.match("6")||f.match("7")||f.match("8")||f.match("9")||m.match("0")||m.match("1")||m.match("2")||m.match("3")||m.match("4")||m.match("5")||m.match("6")||m.match("7")||m.match("8")||m.match("9")||l.match("0")||l.match("1")||l.match("2")||l.match("3")||l.match("4")||l.match("5")||l.match("6")||l.match("7")||l.match("8")||l.match("9"))
    {
        alert("Invalid Character in Name");
        /*if(f.match(B0)||m.match(B0)||l.match(B0)||f.match(B1)||m.match(B1)||l.match(B1)||f.match(B2)||m.match(B2)||l.match(B2)||f.match(A0)||m.match(A0)||l.match(A0)||f.match(A1)||m.match(A1)||l.match(A1)||f.match(A2)||m.match(A2)||l.match(A2)||f.match(A3)||m.match(A3)||l.match(A3)||f.match(A4)||m.match(A4)||l.match(A4)||f.match(A5)||m.match(A5)||l.match(A5)||f.match(A6)||m.match(A6)||l.match(A6)||f.match(A7)||m.match(A7)||l.match(A7)||f.match(A8)||m.match(A8)||l.match(A8)||f.match(A9)||m.match(A9)||l.match(A9))
        {
        }*/
    }
    else
    {
        custname_validation();
    }
}
function custname_validation()
{
    var pwd1,pwd2,uname1,uname2;
    pwd1=document.getElementById("pwd1").value;
    pwd2=document.getElementById("pwd2").value;
    uname1=document.getElementById("uname1").value;
    uname2=document.getElementById("uname2").value;
    u1=String(uname1);
    u2=String(uname2);
    if(pwd1.length<=7||pwd2.length<=7)
    {
        alert("Password Must be between 8 to 40");
    }
    else
    {
        if(uname1.length<=4||uname2.length<=4)
        {
            alert("Username Must be between 5 to 100");
        }
        else
        {
            if(u1.match("-")||u2.match("-")||u1.match("_")||u2.match("_")||u1.match(".")||u2.match(".")||u1.match("0")||u2.match("0")||u1.match("1")||u2.match("1")||u1.match("2")||u2.match("2")||u1.match("3")||u2.match("3")||u1.match("4")||u2.match("4")||u1.match("5")||u2.match("5")||u1.match("6")||u2.match("6")||u1.match("7")||u2.match("7")||u1.match("8")||u2.match("8")||u1.match("9")||u2.match("9")||u1.match("a")||u2.match("a")||u1.match("b")||u2.match("b")||u1.match("c")||u2.match("c")||u1.match("d")||u2.match("d")||u1.match("e")||u2.match("e")||u1.match("f")||u2.match("f")||u1.match("g")||u2.match("g")||u1.match("h")||u2.match("h")||u1.match("i")||u2.match("i")||u1.match("j")||u2.match("j")||u1.match("k")||u2.match("k")||u1.match("l")||u2.match("l")||u1.match("m")||u2.match("m")||u1.match("n")||u2.match("n")||u1.match("o")||u2.match("o")||u1.match("p")||u2.match("p")||u1.match("q")||u2.match("q")||u1.match("r")||u2.match("r")||u1.match("s")||u2.match("s")||u1.match("t")||u2.match("t")||u1.match("u")||u2.match("u")||u1.match("v")||u2.match("v")||u1.match("w")||u2.match("w")||u1.match("x")||u2.match("x")||u1.match("y")||u2.match("y")||u1.match("z")||u2.match("z"))
            {
                submiting();
            }
            else
            {
                alert("Only [-,_,.],[0-9],[a-z] characters are allowed");
            }
        }
    }
   //document.getElementById("Create_Account_Control").disabled=true; 
}
function submiting()
{
    submit();
}

And at the End i created Servlet page:

package Classfiles;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Date;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class sfkcreateaccount extends HttpServlet 
{
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException 
    {
        PrintWriter out = response.getWriter();
        String fname,mname,lname,uname, pwd,cntri,gender;
        Date dob;
        java.util.Date db1;
        //db1=new java.util.Date(request.getParameter("dob"));
        fname=request.getParameter("fname");
        mname=request.getParameter("mname");
        lname=request.getParameter("lname");
        uname=request.getParameter("uname2");
        pwd=request.getParameter("pwd2");
        //dob=(Date) db1;
        out.println(fname);
        out.println(mname);
        out.println(lname);
        out.println(uname);
        out.println(pwd);
        //out.println(dob.toString());
    }
    @Override
    public String getServletInfo() {
        return "Short description";
    }
}

This Servlets always showing me null value So can any one tell me what to do to remove this error I also want to optimise the code so please help me.