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javax.activation

Class URLDataSource

Contents
  • All Implemented Interfaces:
    DataSource

    public class URLDataSource
extends Object
implements DataSource
    The URLDataSource class provides an object that wraps a URL object in a DataSource interface. URLDataSource simplifies the handling of data described by URLs within the JavaBeans Activation Framework because this class can be used to create new DataHandlers. NOTE: The DataHandler object creates a URLDataSource internally, when it is constructed with a URL.
    Since:
    1.6
    See Also:
    DataSource, DataHandler

    • Constructor Detail

      • URLDataSource

        public URLDataSource(URL url)
        URLDataSource constructor. The URLDataSource class will not open a connection to the URL until a method requiring it to do so is called.
        Parameters:
        url - The URL to be encapsulated in this object.

    • Method Detail

      • getContentType

        public String getContentType()
        Returns the value of the URL content-type header field. It calls the URL's URLConnection.getContentType method after retrieving a URLConnection object. Note: this method attempts to call the openConnection method on the URL. If this method fails, or if a content type is not returned from the URLConnection, getContentType returns "application/octet-stream" as the content type.
        Specified by:
        getContentType in interface DataSource
        Returns:
        the content type.

      • getName

        public String getName()
        Calls the getFile method on the URL used to instantiate the object.
        Specified by:
        getName in interface DataSource
        Returns:
        the result of calling the URL's getFile method.

      • getOutputStream

        public OutputStream getOutputStream()
                             throws IOException
        The getOutputStream method from the URL. First an attempt is made to get the URLConnection object for the URL. If that succeeds, the getOutputStream method on the URLConnection is returned.
        Specified by:
        getOutputStream in interface DataSource
        Returns:
        the OutputStream.
        Throws:
        IOException

      • getURL

        public URL getURL()
        Return the URL used to create this DataSource.
        Returns:
        The URL.

Document created the 11/06/2005, last modified the 04/03/2020
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