You can download Image Magick for free at http://www.imagemagick.org
Images are in C:\images
ImageMagick executable is in C:\ImageMagick\convert.exe
Loop through all files in folder and scale them down 25% of their original size.
Use this command to resize the image and append “s_” to the begining of the file name.
Example:
C:\ImageMagick\convert.exe C:\images\1.jpg -resize 25% C:\images\s_1.jpg
import java.io.File; import java.io.IOException; public class ImgManipulator { public static void main(String[] args) { String path = "c:\\images\\"; String files; File folder = new File(path); File[] listOfFiles = folder.listFiles(); for (int i = 0; i < listOfFiles.length; i++) { if (listOfFiles[i].isFile()) { files = listOfFiles[i].getName(); System.out.println("Scaling"+files); try { Process p = Runtime.getRuntime().exec( "C:\\ImageMagick\\convert.exe C:\\images\\"+files+" -resize 25% C:\\images\\s_"+files); } catch (IOException e) { e.printStackTrace(); } } } } } |