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- import java.awt.image.*;
- import javax.imageio.*;
- import java.io.*;
- /**
- * hana
- * ImageFileManager is a small utility class with static methods to load
- * and save images.
- *
- * The files on disk can be in JPG or PNG image format. For files written
- * by this class, the format is determined by the constant IMAGE_FORMAT.
- *
- * @author Michael Kolling and David J Barnes
- * @version 2.0
- */
- public class ImageFileManager
- {
- // A constant for the image format that this writer uses for writing.
- // Available formats are "jpg" and "png".
- private static final String IMAGE_FORMAT = "jpg";
- /**
- * Read an image file from disk and return it as an image. This method
- * can read JPG and PNG file formats. In case of any problem (e.g the file
- * does not exist, is in an undecodable format, or any other read error)
- * this method returns null.
- *
- * @param imageFile The image file to be loaded.
- * @return The image object or null is it could not be read.
- */
- public static OFImage loadImage(File imageFile)
- {
- try {
- BufferedImage image = ImageIO.read(imageFile);
- if(image == null || (image.getWidth(null) < 0)) {
- // we could not load the image - probably invalid file format
- return null;
- }
- return new OFImage(image);
- }
- catch(IOException exc) {
- return null;
- }
- }
- /**
- * Write an image file to disk. The file format is JPG. In case of any
- * problem the method just silently returns.
- *
- * @param image The image to be saved.
- * @param file The file to save to.
- */
- public static void saveImage(OFImage image, File file)
- {
- try {
- ImageIO.write(image, IMAGE_FORMAT, file);
- }
- catch(IOException exc) {
- return;
- }
- }
- }
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