us.daveread.basicquery.images

Class ImageUtility

java.lang.Object

us.daveread.basicquery.images.ImageUtility

public class ImageUtility
extends java.lang.Object

General image access utility methods.

Copyright: Copyright (c) 2004-2014, David Read

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Author:

David Read

Field Summary

Fields

Modifier and Type	Field and Description
private static int	BLOCK_READ_SIZE The block size when loading images
private static ImageUtility	instance The instance of this class - a Singleton
private static org.apache.log4j.Logger	LOGGER Logger

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ImageUtility() Constructor is private for singleton.

Method Summary

Methods

Modifier and Type	Method and Description
static byte[]	getImageAsByteArray(java.lang.String saImageName) Get the image as a byte array.
static java.io.InputStream	getImageAsStream(java.lang.String saImageName) Get the image as a stream.
static java.net.URL	getImageAsURL(java.lang.String saImageName) Get the image as a URL.
private static ImageUtility	instance() Get the instance of this singleton, private as only the static utility methods can have access to the class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

instance

private static ImageUtility instance

The instance of this class - a Singleton

LOGGER

private static final org.apache.log4j.Logger LOGGER

Logger

BLOCK_READ_SIZE

private static final int BLOCK_READ_SIZE

The block size when loading images

See Also:

Constant Field Values

Constructor Detail

ImageUtility

private ImageUtility()

Constructor is private for singleton.

Method Detail

instance

private static ImageUtility instance()

Get the instance of this singleton, private as only the static utility methods can have access to the class.

Returns:

The single instance of the class.

getImageAsStream

public static java.io.InputStream getImageAsStream(java.lang.String saImageName)

Get the image as a stream.

Parameters:

saImageName - The file name of the image to be loaded.

Returns:

The InputStream opened for the image file.

getImageAsByteArray

public static byte[] getImageAsByteArray(java.lang.String saImageName)

Get the image as a byte array.

Parameters:

saImageName - The file name of the image to be loaded.

Returns:

The byte array containing the image data.

getImageAsURL

public static java.net.URL getImageAsURL(java.lang.String saImageName)

Get the image as a URL.

Parameters:

saImageName - The file name of the image to be loaded.

Returns:

The URL of the image. Under JDK1.3.1_01 on windows it appears that the underlying Class.getResource() call is not supported.