Why is the name of java file is same as public class?

hello friends
why we need to assign same name to .java file as the name of public class in .java file? while its not necessary for the class having no modifier?

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Unable to compile the JAXB generated java files

Hi
I am using JAXB 2.0 API for binding process.
I have products.xml file as
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE PRODUCTDATA SYSTEM "products.dtd">
<PRODUCTDATA>
<PRODUCT PRODID="P001" CATEGORY="Books">
<PRODUCTNAME>Gone with the wind</PRODUCTNAME>
<DESCRIPTION>This is abt American Civil War</DESCRIPTION>
<PRICE>25.00</PRICE>
<QUANTITY>3</QUANTITY>
</PRODUCT>
</PRODUCTDATA>
and products.xsd(Schema file) as
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:element name="PRODUCTDATA" type="prdt"/>
<xsd:complexType name="prdt">
<xsd:sequence>
<xsd:element name="PRODUCT" type="prd" maxOccurs="unbounded" />
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="prd">
<xsd:sequence>
<xsd:element name="PRODUCTNAME" type="xsd:string"/>
<xsd:element name="DESCRIPTION" type="xsd:string"/>
<xsd:element name="PRICE" type="xsd:positiveInteger"/>
<xsd:element name="QUANTITY" type="xsd:nonNegativeInteger"/>
</xsd:sequence>
<xsd:attribute name="PRODID" type="pid" use="required"/>
<xsd:attribute name="CATEGORY" type="xsd:string" use="optional"/>
</xsd:complexType>
<xsd:simpleType name="pid">
<xsd:restriction base="xsd:string">
<xsd:pattern value="[p]{1}/d{3}"/>
<xsd:length value="4"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:schema>
I am converting these schema file to java files by using binding compiler xjc.
So that three java files are genearated automatically.
1) ObjectFactory.java
// This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, vJAXB 2.0 in JDK 1.6
// See http://java.sun.com/xml/jaxb
// Any modifications to this file will be lost upon recompilation of the source schema.
// Generated on: 2008.06.23 at 04:09:25 PM IST
package testing.jaxb;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.XmlElementDecl;
import javax.xml.bind.annotation.XmlRegistry;
import javax.xml.namespace.QName;
* This object contains factory methods for each
* Java content interface and Java element interface
* generated in the testing.jaxb package.
* <p>An ObjectFactory allows you to programatically
* construct new instances of the Java representation
* for XML content. The Java representation of XML
* content can consist of schema derived interfaces
* and classes representing the binding of schema
* type definitions, element declarations and model
* groups. Factory methods for each of these are
* provided in this class.
@XmlRegistry
public class ObjectFactory {
private final static QName PRODUCTDATAQNAME = new QName("", "PRODUCTDATA");
* Create a new ObjectFactory that can be used to create new instances of schema derived classes for package: testing.jaxb
public ObjectFactory() {
* Create an instance of {@link Prd }
public Prd createPrd() {
return new Prd();
* Create an instance of {@link Prdt }
public Prdt createPrdt() {
return new Prdt();
* Create an instance of {@link JAXBElement }{@code <}{@link Prdt }{@code >}}
@XmlElementDecl(namespace = "", name = "PRODUCTDATA")
public JAXBElement<Prdt> createPRODUCTDATA(Prdt value) {
return new JAXBElement<Prdt>(_PRODUCTDATA_QNAME, Prdt.class, null, value);
2)Prdt.java
// This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, vJAXB 2.0 in JDK 1.6
// See http://java.sun.com/xml/jaxb
// Any modifications to this file will be lost upon recompilation of the source schema.
// Generated on: 2008.06.23 at 04:09:25 PM IST
package testing.jaxb;
import java.util.ArrayList;
import java.util.List;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlType;
* <p>Java class for prdt complex type.
* <p>The following schema fragment specifies the expected content contained within this class.
* <pre>
* <complexType name="prdt">
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="PRODUCT" type="{}prd" maxOccurs="unbounded"/>
* </sequence>
* </restriction>
* </complexContent>
* </complexType>
* </pre>
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "prdt", propOrder = {
"product"
public class Prdt {
@XmlElement(name = "PRODUCT", required = true)
protected List<Prd> product;
* Gets the value of the product property.
* <p>
* This accessor method returns a reference to the live list,
* not a snapshot. Therefore any modification you make to the
* returned list will be present inside the JAXB object.
* This is why there is not a <CODE>set</CODE> method for the product property.
* <p>
* For example, to add a new item, do as follows:
* <pre>
* getPRODUCT().add(newItem);
* </pre>
* <p>
* Objects of the following type(s) are allowed in the list
* {@link Prd }
public List<Prd> getPRODUCT() {
if (product == null) {
product = new ArrayList<Prd>();
return this.product;
3) Prd.java
// This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, vJAXB 2.0 in JDK 1.6
// See http://java.sun.com/xml/jaxb
// Any modifications to this file will be lost upon recompilation of the source schema.
// Generated on: 2008.06.23 at 04:09:25 PM IST
package testing.jaxb;
import java.math.BigInteger;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlType;
* <p>Java class for prd complex type.
* <p>The following schema fragment specifies the expected content contained within this class.
* <pre>
* <complexType name="prd">
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="PRODUCTNAME" type="{http://www.w3.org/2001/XMLSchema}string"/>
* <element name="DESCRIPTION" type="{http://www.w3.org/2001/XMLSchema}string"/>
* <element name="PRICE" type="{http://www.w3.org/2001/XMLSchema}positiveInteger"/>
* <element name="QUANTITY" type="{http://www.w3.org/2001/XMLSchema}nonNegativeInteger"/>
* </sequence>
* <attribute name="CATEGORY" type="{http://www.w3.org/2001/XMLSchema}string" />
* <attribute name="PRODID" use="required" type="{}pid" />
* </restriction>
* </complexContent>
* </complexType>
* </pre>
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "prd", propOrder = {
"productname",
"description",
"price",
"quantity"
public class Prd {
@XmlElement(name = "PRODUCTNAME", required = true)
protected String productname;
@XmlElement(name = "DESCRIPTION", required = true)
protected String description;
@XmlElement(name = "PRICE", required = true)
protected BigInteger price;
@XmlElement(name = "QUANTITY", required = true)
protected BigInteger quantity;
@XmlAttribute(name = "CATEGORY")
protected String category;
@XmlAttribute(name = "PRODID", required = true)
protected String prodid;
* Gets the value of the productname property.
* @return
* possible object is
* {@link String }
public String getPRODUCTNAME() {
return productname;
* Sets the value of the productname property.
* @param value
* allowed object is
* {@link String }
public void setPRODUCTNAME(String value) {
this.productname = value;
* Gets the value of the description property.
* @return
* possible object is
* {@link String }
public String getDESCRIPTION() {
return description;
* Sets the value of the description property.
* @param value
* allowed object is
* {@link String }
public void setDESCRIPTION(String value) {
this.description = value;
* Gets the value of the price property.
* @return
* possible object is
* {@link BigInteger }
public BigInteger getPRICE() {
return price;
* Sets the value of the price property.
* @param value
* allowed object is
* {@link BigInteger }
public void setPRICE(BigInteger value) {
this.price = value;
* Gets the value of the quantity property.
* @return
* possible object is
* {@link BigInteger }
public BigInteger getQUANTITY() {
return quantity;
* Sets the value of the quantity property.
* @param value
* allowed object is
* {@link BigInteger }
public void setQUANTITY(BigInteger value) {
this.quantity = value;
* Gets the value of the category property.
* @return
* possible object is
* {@link String }
public String getCATEGORY() {
return category;
* Sets the value of the category property.
* @param value
* allowed object is
* {@link String }
public void setCATEGORY(String value) {
this.category = value;
* Gets the value of the prodid property.
* @return
* possible object is
* {@link String }
public String getPRODID() {
return prodid;
* Sets the value of the prodid property.
* @param value
* allowed object is
* {@link String }
public void setPRODID(String value) {
this.prodid = value;
Next step is to compile these three files
So I am compiling these three files it gives me compiler error as:
testing/jaxb/ObjectFactory.java:31: illegal character: \64
@XmlRegistry
^
testing/jaxb/ObjectFactory.java:63: illegal character: \64
@XmlElementDecl(namespace = "", name = "PRODUCTDATA")
^
testing/jaxb/ObjectFactory.java:65: <identifier> expected
return new JAXBElement<Prdt>(_PRODUCTDATA_QNAME, Prdt.class, null, value
^
testing/jaxb/ObjectFactory.java:65: <identifier> expected
return new JAXBElement<Prdt>(_PRODUCTDATA_QNAME, Prdt.class, null, value
^
testing/jaxb/ObjectFactory.java:65: '{' expected
return new JAXBElement<Prdt>(_PRODUCTDATA_QNAME, Prdt.class, null, value
^
testing/jaxb/Prdt.java:38: illegal character: \64
@XmlAccessorType(XmlAccessType.FIELD)
^
testing/jaxb/Prdt.java:39: illegal character: \64
@XmlType(name = "prdt", propOrder = {
^
testing/jaxb/Prdt.java:44: illegal character: \64
@XmlElement(name = "PRODUCT", required = true)
^
testing/jaxb/Prdt.java:45: <identifier> expected
protected List<Prd> product;
^
testing/jaxb/Prdt.java:69: <identifier> expected
public List<Prd> getPRODUCT() {
^
testing/jaxb/Prdt.java:75: ';' expected
^
testing/jaxb/Prd.java:43: illegal character: \64
@XmlAccessorType(XmlAccessType.FIELD)
^
testing/jaxb/Prd.java:44: illegal character: \64
@XmlType(name = "prd", propOrder = {
^
testing/jaxb/Prd.java:52: illegal character: \64
@XmlElement(name = "PRODUCTNAME", required = true)
^
testing/jaxb/Prd.java:53: <identifier> expected
protected String productname;
^
testing/jaxb/Prd.java:54: illegal character: \64
@XmlElement(name = "DESCRIPTION", required = true)
^
testing/jaxb/Prd.java:55: <identifier> expected
protected String description;
^
testing/jaxb/Prd.java:56: illegal character: \64
@XmlElement(name = "PRICE", required = true)
^
testing/jaxb/Prd.java:57: <identifier> expected
protected BigInteger price;
^
testing/jaxb/Prd.java:58: illegal character: \64
@XmlElement(name = "QUANTITY", required = true)
^
testing/jaxb/Prd.java:59: <identifier> expected
protected BigInteger quantity;
^
testing/jaxb/Prd.java:60: illegal character: \64
@XmlAttribute(name = "CATEGORY")
^
testing/jaxb/Prd.java:61: <identifier> expected
protected String category;
^
testing/jaxb/Prd.java:62: illegal character: \64
@XmlAttribute(name = "PRODID", required = true)
^
testing/jaxb/Prd.java:63: <identifier> expected
protected String prodid;
^
25 errors
I want all three files to compiled successfully.If it is compiled only then I will continue on Unmarshalling process

I suspect you are trying to compile the files one by one. You may also be trying to compile them disregarding the package structure.
From your post, I gather these files are in the package: com.geindustrial.sqms
Therefore, if they are not so already, put them under a directory structure:
com/geindustrial/sqms
and then compile with:
javac com/geindustrial/sqms/AddCtq.java com/geindustrial/sqms/Ctq.java com/geindustrial/sqms/VariableData.java
(The above is all on one line.)
HTH,
Manuel Amago.

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You're missing the point.
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When you set the name of the file, the Finder needs two things - the original file that you're trying to rename, and the new name you want it to take.
In your revised script you're specifying the existing name (not path) of the file you want to change, and specifying its path along with the new name. That's the wrong way around.
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Now, in the case of the 'original file specification' you need to provide enough information for the Finder to identify the file. You're just saying 'work.txt', but that is not enough (and that's why it's complaining). There could be a hundred 'work.txt' files spread around in different directories on your disk. How is the Finder supposed to know which one you want to change?
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Now, if the file is not on your desktop you can amend the script to include the relevant path, e.g.:
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Hi, Im trying to validate an file name that is sent with a form
I want that the Validator Checks if the filename ends with some extensions (.jpg ,etcc) for only addmit one type of files (images)
I ve build my own Pluggable Validator , but I dont know how to extract the filename from Validator.
Can anyone help me??
the Code is something like this
where
package jmar5439.webpage.validator;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import java.io.Serializable;
import org.apache.struts.action.*;
import org.apache.commons.validator.ValidatorAction;
import org.apache.commons.validator.*;
import org.apache.commons.validator.Field;
import org.apache.commons.validator.GenericValidator;
import org.apache.commons.validator.util.ValidatorUtils;
import org.apache.commons.validator.Validator;
import org.apache.struts.validator.Resources;
import org.apache.commons.logging.LogFactory;
import jmar5439.webpage.action.InsertRoomAction;
import org.apache.commons.logging.Log;
public class ImageFileValidator implements Serializable {
// public ImageFileValidator() {}
public static boolean validateImageFile(Object bean, ValidatorAction va,
Field field, ActionMessages errors,
HttpServletRequest request, Validator validator) {
String value = null;
if (field.getProperty() != null && field.getProperty().length() > 0) {
value = ValidatorUtils.getValueAsString(bean, field.getProperty());
String file = new String(value);
file = file.toLowerCase();
if (!GenericValidator.isBlankOrNull(value)) {
try {
if (!file.endsWith(".jpeg") || !file.endsWith(".gif") ||
!file.endsWith(".jpg")) {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
return false;
} catch (Exception e) {
errors.add(field.getKey(),Resources.getActionMessage(request, va,field));
return false;
return false;
return false;
I ve declared
<form-property name="file"
type="org.apache.struts.upload.FormFile"/>
in struts-config file and
<field property="file"
depends="imagefile">
in validate file.
Thanks

I ve solved like this
package jmar5439.webpage.validator;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import java.io.Serializable;
import org.apache.struts.action.*;
import org.apache.commons.validator.ValidatorAction;
import org.apache.commons.validator.*;
import org.apache.commons.validator.Field;
import org.apache.commons.validator.GenericValidator;
import org.apache.commons.validator.util.ValidatorUtils;
import org.apache.commons.validator.Validator;
import org.apache.struts.validator.Resources;
import org.apache.commons.logging.LogFactory;
import jmar5439.webpage.action.InsertRoomAction;
import org.apache.commons.logging.Log;
import org.apache.struts.upload.FormFile;
import org.apache.commons.beanutils.PropertyUtils;
import java.lang.reflect.*;
public class ImageFileValidator implements Serializable {
// public ImageFileValidator() {}
public static boolean validateImageFile(Object bean, ValidatorAction va,
Field field, ActionMessages errors,
Validator validator,
HttpServletRequest request) {
Log log = LogFactory.getLog(ImageFileValidator.class);
//log.info(form.toString() );
String value = ValidatorUtils.getValueAsString(
bean,
field.getProperty());
if (!GenericValidator.isBlankOrNull(value)) {
try {
FormFile file = (FormFile) PropertyUtils.getSimpleProperty(bean,
"file");
String filename=file.getFileName().toLowerCase() ;
//log.info("Filename:" + file.getFileName());
if (filename.endsWith(".jpeg") ||
filename.endsWith(".jpg") ||
filename.endsWith(".gif")) {
log.info("return true");
return true;
} else {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
log.info("return false");
return false;
} catch (NoSuchMethodException ex) {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
return false;
} catch (InvocationTargetException ex) {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
return false;
} catch (IllegalAccessException ex) {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
return false;
//return false;
// log.info("Entra0");
/* if (field.getProperty() != null && field.getProperty().length() > 0) {
// log.info("Entra");
// value = ValidatorUtils.getValueAsString(bean, field.getProperty());
value = ValidatorUtils.getValueAsString(bean, field.getProperty());
String file = new String(value);
file = file.toLowerCase();
if (!GenericValidator.isBlankOrNull(value)) {
// log.info("Entra2");
try {
if (!file.endsWith(".jpeg") || !file.endsWith(".gif") ||
!file.endsWith(".jpg")) {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
//log.info("Entra3");
return false;
} catch (Exception e) {
errors.add(field.getKey(),Resources.getActionMessage(request, va,field));
return false;
return false;
// return true;
} else {
return false;
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