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## javax.activation
Class URLDataSource

    java.lang.Object
      javax.activation.URLDataSource

All Implemented Interfaces:
  DataSource

public class URLDataSource
extends java.lang.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.

See Also:
  `DataSource`, `DataHandler`

Constructor Summary
`URLDataSource(java.net.URL url)` URLDataSource constructor.

Method Summary
`java.lang.String` | `getContentType()` Returns the value of the URL content-type header field.
`java.io.InputStream` | `getInputStream()` The getInputStream method from the URL.
`java.lang.String` | `getName()` Calls the `getFile` method on the URL used to instantiate the object.
`java.io.OutputStream` | `getOutputStream()` The getOutputStream method from the URL.
`java.net.URL` | `getURL()` Return the URL used to create this DataSource.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### URLDataSource

    public URLDataSource(java.net.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 java.lang.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 java.lang.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.

### getInputStream

    public java.io.InputStream getInputStream()
                                       throws java.io.IOException

  The getInputStream method from the URL. Calls the `openStream` method on the URL.

  Specified by:
    `getInputStream` in interface `DataSource`
  Returns:
    the InputStream.
  Throws:
    `java.io.IOException`

### getOutputStream

    public java.io.OutputStream getOutputStream()
                                         throws java.io.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:
    `java.io.IOException`

### getURL

    public java.net.URL getURL()

  Return the URL used to create this DataSource.

  Returns:
    The URL.

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