Java and XML

[lethal.b]

I have created an XML schema that holds flights and i want to use to be able to create an XML document that contains all the flights. However, i can only write single flights to the XML file. So can anyone tell me how i can add multiple flights to the XML file.

Here is the XML schema:

<?xml version="1.0" encoding="UTF-8"?>

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    targetNamespace="http://xml.netbeans.org/schema/Flights"
    xmlns:tns="http://xml.netbeans.org/schema/Flights"
    elementFormDefault="qualified">
    <xsd:element name="Flight">
        <xsd:complexType>
            <xsd:sequence>
                <xsd:element name="OriginCity" type="xsd:string"/>
                <xsd:element name="DestinationCity" type="xsd:string"/>
                <xsd:element name="Airline" type="xsd:string"/>
                <xsd:element name="AvailableSeats" type="xsd:int"/>
                <xsd:element name="Currency" type="xsd:string"/>
                <xsd:element name="Value" type="xsd:double"/>
            </xsd:sequence>
            <xsd:attribute name="ID" type="xsd:int"/>
        </xsd:complexType>
    </xsd:element>
</xsd:schema>

My code that i tried:

public class Cwtestings {

    public static void main(String[] args) {
        // TODO code application logic here
        FlightRequestss.Flight quickXML = new FlightRequestss.Flight();
        
        
        
         quickXML.setID(1);
        quickXML.setOriginCity("London");
        quickXML.setDestinationCity("Glasgow");
        quickXML.setAirline("BMI");
        quickXML.setAvailableSeats(200);
        quickXML.setCurrency("GBP");
        quickXML.setValue(150.00);
        
        quickXML.setID(2);
        quickXML.setOriginCity("Nottingham");
        quickXML.setDestinationCity("Paris");
        quickXML.setAirline("EasyJet");
        quickXML.setAvailableSeats(400);
        quickXML.setCurrency("GBP");
        quickXML.setValue(155.00);
        
        quickXML.setID(3);
        quickXML.setOriginCity("Paris");
        quickXML.setDestinationCity("Nottingham");
        quickXML.setAirline("EasyJet");
        quickXML.setAvailableSeats(300);
        quickXML.setCurrency("EUR");
        quickXML.setValue(156.00);
        
        try {            
            javax.xml.bind.JAXBContext jaxbCtx = javax.xml.bind.JAXBContext.newInstance(quickXML.getClass().getPackage().getName());
            javax.xml.bind.Marshaller marshaller = jaxbCtx.createMarshaller();
            marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_ENCODING, "UTF-8"); //NOI18N
            marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
            marshaller.marshal(quickXML, System.out);
        } catch (javax.xml.bind.JAXBException ex) {
            // XXXTODO Handle exception
            java.util.logging.Logger.getLogger("global").log(java.util.logging.Level.SEVERE, null, ex); //NOI18N
        }  
    }
}

The above code will only display flight witht he ID 3 as it was the last thing enetered so i assume its overwriting each time.

After writing all the flights to a file i then need to be able to open that file and search for certain things. If possible, could i read them into a List somehow?

[peter_budo]

Yes of course, because you overwrite previous values. You need to store these data in a collection(array, array list, vector etc)