Java converts white background images to colorless

 PackageCom.cxf.dao;ImportJava.awt.Graphics2D;ImportJava.awt.Image;ImportJava.awt.image.BufferedImage;ImportJava.io.ByteArrayOutputStream;ImportJava.io.File;ImportJava.io.FileInputStream;ImportJava.io.InputStream;ImportJavax.imageio.ImageIO;ImportJavax.swing.ImageIcon; Public classAlpha { Public Static voidMain (string[] args) {transferalpha (); } Public Static byte[] Transferalpha () {Bytearrayoutputstream Bytearrayoutputstream=NewBytearrayoutputstream (); File File=NewFile ("E:/07.png");   InputStream is; Try{ is=Newfileinputstream (file); BufferedImage Bi=Imageio.read (IS); Image Image=(Image) bi; ImageIcon ImageIcon=NewImageIcon (image); BufferedImage BufferedImage=Newbufferedimage (ImageIcon. Geticonwidth (), Imageicon.geticonheight (), BUFFEREDIMAGE.TYPE_4BYTE_ABGR); Graphics2D g2d=(graphics2d) bufferedimage.getgraphics (); G2d.drawimage (Imageicon.getimage (),0, 0, ImageIcon. Getimageobserver ()); intAlpha = 0;  for(intJ1 = Bufferedimage.getminy (); J1 <bufferedimage. GetHeight (); J1++) {      for(intJ2 = Bufferedimage.getminx (); J2 <bufferedimage. getwidth (); J2++) {      intRGB =Bufferedimage.getrgb (J2, J1); intR = (RGB & 0xff0000) >> 16 ; intg= (RGB & 0xff00) >> 8 ; intb= (RGB & 0xFF ); if((255-r) <30) && ((255-g) <30) && ((255-b) <30) ) {RGB= ((alpha + 1) << 24) | (RGB & 0X00FFFFFF);     } bufferedimage.setrgb (J2, J1, RGB); }} g2d.drawimage (BufferedImage,0, 0, Imageicon.getimageobserver ()); Imageio.write (BufferedImage,"PNG",NewFile ("E:/67.png") );//Direct Output file//Imageio.write (bufferedimage, "PNG", bytearrayoutputstream);//Convert to byte array}Catch(Exception e) {e.printstacktrace (); }finally{      }   returnBytearrayoutputstream.tobytearray ();}}

Java converts white background images to colorless