Implementing the MIDlet Utils class

To implement the Utils class:

1. Create the Utils.java class file.

2. Import the required packages and classes.

   package com.nokia.example.imagescaler;
   
   import javax.microedition.lcdui.Image;

3. Create the Utils class.

   public class Utils {

4. Create required variables.

   public static final String PHOTOS_DIR = System.getProperty("fileconn.dir.photos");

5. Create the scaleImage method. This method scales the given image to the given new size.

   public static Image scaleImage(Image image,
                                  final int newWidth,
                                  final int newHeight)
   throws OutOfMemoryError
   {
       if (image == null || newWidth <= 0 || newHeight <= 0) {
           return null;
       }
   
       final int sourceWidth = image.getWidth();
       final int sourceHeight = image.getHeight();
       int[] rgbImageData = null;
   
       if (rgbImageData == null) {
           rgbImageData = new int[sourceWidth * sourceHeight];
           image.getRGB(rgbImageData, 0, sourceWidth, 0, 0, sourceWidth, sourceHeight);
       }
   
       int rgbImageScaledData[] = new int[newWidth * newHeight];
   
       int tempScaleRatioWidth = ((sourceWidth << 16) / newWidth);
       int tempScaleRatioHeight = ((sourceHeight << 16) / newHeight);
       int i = 0;
   
       for (int y = 0; y < newHeight; y++) {
           for (int x = 0; x < newWidth; x++) {
               rgbImageScaledData[i++] =
                   rgbImageData[(sourceWidth * ((y * tempScaleRatioHeight) >> 16))
                                + ((x * tempScaleRatioWidth) >> 16)];
           }
       }
   
       return Image.createRGBImage(rgbImageScaledData, newWidth, newHeight, true);
   }
   }