Source Code : Determining If an Image Has Transparent Pixels

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Determining If an Image Has Transparent Pixels

  

import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.PixelGrabber;

import javax.swing.ImageIcon;

public class Main {
  public static void main(String[] argv) throws Exception {

    Image image = new ImageIcon("a.png").getImage();
    if (image instanceof BufferedImage) {
      BufferedImage bimage = (BufferedImage) image;
      System.out.println(bimage.getColorModel().hasAlpha());
    }

    PixelGrabber pg = new PixelGrabber(image, 0, 0, 1, 1, false);
    try {
      pg.grabPixels();
    } catch (InterruptedException e) {
    }

    ColorModel cm = pg.getColorModel();
    System.out.println(cm.hasAlpha());
  }
}

   
    
  

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