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| 1 | +import java.awt.Graphics2D; |
| 2 | +import java.awt.Image; |
| 3 | +import java.awt.image.BufferedImage; |
| 4 | +import java.io.File; |
| 5 | +import javax.imageio.ImageIO; |
| 6 | + |
| 7 | +public class BatchResizeImages { |
| 8 | + |
| 9 | + public static void main(String[] args) { |
| 10 | + if (args.length != 4) { |
| 11 | + System.out.println("Usage: java BatchResizeImages <input_folder> <output_folder> <width> <height>"); |
| 12 | + return; |
| 13 | + } |
| 14 | + |
| 15 | + String inputFolder = args[0]; |
| 16 | + String outputFolder = args[1]; |
| 17 | + int width = Integer.parseInt(args[2]); |
| 18 | + int height = Integer.parseInt(args[3]); |
| 19 | + |
| 20 | + File inputDir = new File(inputFolder); |
| 21 | + if (!inputDir.exists() || !inputDir.isDirectory()) { |
| 22 | + System.out.println("Input directory does not exist: " + inputFolder); |
| 23 | + return; |
| 24 | + } |
| 25 | + |
| 26 | + File outputDir = new File(outputFolder); |
| 27 | + if (!outputDir.exists()) { |
| 28 | + outputDir.mkdirs(); |
| 29 | + } |
| 30 | + |
| 31 | + File[] files = inputDir.listFiles((_, name) -> name.toLowerCase().endsWith(".jpg") || |
| 32 | + name.toLowerCase().endsWith(".jpeg") || |
| 33 | + name.toLowerCase().endsWith(".jpg") || |
| 34 | + name.toLowerCase().endsWith(".png")); |
| 35 | + |
| 36 | + if (files == null || files.length == 0) { |
| 37 | + System.out.println("No image files found in: " + inputFolder); |
| 38 | + return; |
| 39 | + } |
| 40 | + |
| 41 | + for (File file : files) { |
| 42 | + try { |
| 43 | + BufferedImage original = ImageIO.read(file); |
| 44 | + if (original == null) { |
| 45 | + System.out.println("Skipping unreadable file: " + file.getName()); |
| 46 | + continue; |
| 47 | + } |
| 48 | + |
| 49 | + Image scaled = original.getScaledInstance(width, height, Image.SCALE_SMOOTH); |
| 50 | + BufferedImage resized = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); |
| 51 | + |
| 52 | + Graphics2D g2d = resized.createGraphics(); |
| 53 | + g2d.drawImage(scaled, 0, 0, null); |
| 54 | + g2d.dispose(); |
| 55 | + |
| 56 | + String format = file.getName().toLowerCase().endsWith(".png") ? "png" : "jpg"; |
| 57 | + File outputFile = new File(outputDir, file.getName()); |
| 58 | + ImageIO.write(resized, format, outputFile); |
| 59 | + |
| 60 | + System.out.println("✅ Resized: " + file.getName()); |
| 61 | + } catch (Exception e) { |
| 62 | + System.out.println("❌ Error processing " + file.getName() + ": " + e.getMessage()); |
| 63 | + } |
| 64 | + } |
| 65 | + |
| 66 | + System.out.println("\n🎉 All done! Resized images saved to: " + outputDir.getAbsolutePath()); |
| 67 | + } |
| 68 | +} |
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