sql - "The markup in the document preceding the root element must be well-formed" error while validating xml -

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i'm new xml, pls forgive me dumb question. have such schema 

 <?xml version="1.0" encoding="utf-8" ?>     <xs:schema xmlns:xs="http://www.w3.org/2001/xmlschema"  elementformdefault="qualified">  <xs:element name="product">    <xs:complextype>      <xs:sequence>         <xs:element name= "name" type = "xs:string"/>         <xs:element name= "price" type = "xs:decimal"/>         <xs:element name= "fish">              <xs:complextype>                 <xs:sequence>                     <xs:element name= "type">                         <xs:simpletype>                             <xs:restriction base="xs:string">                                 <xs:enumeration value="herbivourus"/>                                 <xs:enumeration value="predator"/>                                 <xs:enumeration value="detritophages"/>                                 <xs:enumeration value="omnivourus"/>                             </xs:restriction>                         </xs:simpletype>                     </xs:element>                     <xs:element name="clown">                         <xs:complextype>                             <xs:sequence>                                 <xs:element name="serialversionuid" type="xs:long"/>                                 <xs:element name="character" >                                     <xs:simpletype>                                         <xs:restriction base="xs:string">                                             <xs:enumeration value="slow"/>                                             <xs:enumeration value="quiet"/>                                             <xs:enumeration value="fearful"/>                                             <xs:enumeration value="motile"/>                                         </xs:restriction>                                     </xs:simpletype>                                 </xs:element>                                 <xs:element name="agressiveness">                                     <xs:simpletype>                                         <xs:restriction base="xs:string">                                             <xs:enumeration value="high"/>                                             <xs:enumeration value="medium"/>                                             <xs:enumeration value="low"/>                                         </xs:restriction>                                     </xs:simpletype>                                 </xs:element>                                 <xs:element name="gotspikes" type="xs:boolean"/>                             </xs:sequence>                         </xs:complextype>                      </xs:element>                      <xs:element name="lionfish">                         <xs:complextype>                             <xs:sequence>                                 <xs:element name="serialversionuid" type="xs:long"/>                                <xs:element name="gotspikes" type="xs:boolean"/>                             </xs:sequence>                         </xs:complextype>                      </xs:element>                       <xs:element name="triggerfish">                         <xs:complextype>                             <xs:sequence>                                 <xs:element name="serialversionuid" type="xs:long"/>                                <xs:element name="needshideout" type="xs:boolean"/>                             </xs:sequence>                         </xs:complextype>                      </xs:element>                       <xs:element name="trumpetfish">                         <xs:complextype>                             <xs:sequence>                                 <xs:element name="serialversionuid" type="xs:long"/>                                <xs:element name="gregarious" type="xs:boolean"/>                             </xs:sequence>                         </xs:complextype>                      </xs:element>                       <xs:element name="yellow_boxfish">                         <xs:complextype>                             <xs:sequence>                                 <xs:element name="serialversionuid" type="xs:long"/>                                <xs:element name="gregarious" type="xs:boolean"/>                             </xs:sequence>                         </xs:complextype>                      </xs:element>                 </xs:sequence>             </xs:complextype>         </xs:element>         <xs:element name="reptile">             <xs:complextype>                 <xs:sequence>                     <xs:element name="compatiblewithfish" type= "xs:boolean"/>                     <xs:element name="needsland" type= "xs:boolean"/>                     <xs:element name="turtle">                         <xs:complextype>                             <xs:sequence>                                 <xs:element name="serialversionuid" type="xs:long"/>                                <xs:element name="gregarious" type="xs:boolean"/>                             </xs:sequence>                         </xs:complextype>                      </xs:element>                   </xs:sequence>             </xs:complextype>         </xs:element>         <xs:element name="decoration">             <xs:complextype>                 <xs:sequence>                     <xs:element name="size" type= "xs:int"/>                     <xs:element name="alga">                         <xs:complextype>                             <xs:sequence>                                 <xs:element name="serialversionuid" type="xs:long"/>                                 <xs:element name="doesgetsoxygen" type="xs:boolean"/>                             </xs:sequence>                         </xs:complextype>                      </xs:element>                        <xs:element name="castle">                         <xs:complextype>                             <xs:sequence>                                 <xs:element name="serialversionuid" type="xs:long"/>                                 <xs:element name="ishideout" type="xs:boolean"/>                             </xs:sequence>                         </xs:complextype>                      </xs:element>                   </xs:sequence>             </xs:complextype>         </xs:element>      </xs:sequence>    </xs:complextype>  </xs:element>  </xs:schema>

and there xml 

<?xml version="1.0" encoding="utf-8"?>     xsi:schemalocation="tank.xsd">     <product>     <<fish>             <clown name = "clown">                 <serialversionuid>                     -7114819146190513293l                 </serialversionuid>                 <character>quiet</character>                 <aggressiveness>low</aggressiveness>                 <gotspikes>false</gotspikes>                 <type> herbivourus</type>                 <price> 51000 </price>              </clown>             <lionfish>                 <serialversionuid>                     5302423581237004299l                 </serialversionuid>                 <price>25000</price>                 <name> lionfish </name>                 <type> herbivourus</type>                 <gotspikes>true</gotspikes>             </lionfish>             <triggerfish>                 <serialversionuid>                     4102072582518577014l                 </serialversionuid>                 <price>27000</price>                 <name> triggerfish </name>                 <type> herbivourus</type>                 <needshideout>true</needshideout>             </triggerfish>             <trumpetfish>                 <serialversionuid>                      -6802935171639886135l                 </serialversionuid>                 <price>34500</price>                 <name> trumpetfish </name>                 <type> herbivourus</type>                 <gregarious> true</gregarious>             </trumpetfish>             <yellow_boxfish>                 <serialversionuid>                      4377441012026861992l                 </serialversionuid>                 <price>56900</price>                 <name> yellow_boxfish </name>                 <type> herbivourus</type>                 <gregarious> true</gregarious>             </yellow_boxfish>     </fish>     <reptile>             <turtle>                 <serialversionuid>                     -3606085842515781016l                 </serialversionuid>                 <price>129000</price>                 <name> turtle </name>                 <compatiblewithfish> true</compatiblewithfish>                 <needsland>true</needsland>                 <gregarious> true </gregarious>             </turtle>     </reptile>     <decoration>             <alga>                 <serialversionuid>                     -4311096533955485410l                 </serialversionuid>                 <price>15000</price>                 <name> alga </name>                 <doesgetoxygen> true</doesgetoxygen>             </alga>             <castle>                 <serialversionuid>                     1l                 </serialversionuid>                 <price>110300</price>                 <name> castle </name>                 <ishideout> true</ishideout>             </castle>     </decoration> </product>

also btw have such class hierarchy

  • abstract product
    • abstract fish
      • clown
      • lionfish
      • triggerfish
      • trumpetfish
      • yellow_boxfish
    • abstract reptile
      • turtle
    • abstract decoration
      • alga
      • calstle output of validator "the markup in document preceding root element must well-formed" please point me what's wrong

p.s. need show in xsd hierarchy of classes , base class product class , childs have field name , price, i'm not sure shows correctly in schema :c , btw im going instantiate classes

because have not configure root element proper config matters 

<?xml version="1.0" encoding="utf-8"?> <!doctype struts public "-//apache software foundation//dtd struts configuration 2.1//en" "http://struts.apache.org/dtds/struts-2.1.dtd">  <root>   paste code here </root>

so paste code according suggested in example. paste code in root clauses whatever is. , error shorted out.


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