How to convert InputStream to others, BufferedImage to othres.

How to convert InputStream to others, BufferedImage to othres.

• References
• Java API Doc http://java.sun.com/j2se/1.5.0/docs/api
• InputStream to BufferedImage
  

  InputStream inputStream;
  ........
  BufferedImage bufferedImage=javax.imageio.ImageIO.read(inputStream);
  

• BufferedImage to File
  

  File outputFile=new File("/tmp/test.jpg");
  BufferedImage bufferedImage;
  String formatName="jpeg";
  .....
  boolean result=javax.imageio.ImageIO.write(bufferedImage,formatName,outputFile);
  

• InputStream to File
  

  InputStream inputStream;
  File outputFile=new File("/tmp/test.jpg");
  BufferedImage bufferedImage;
  String formatName="jpeg";
  ........
  BufferedImage bufferedImage=ImageIO.read(inputStream);
  ImageIO.write(bufferedImage,formatName,outputFile);
  

• InputStream to OutputStream
  

  InputStream inputStream;
  OutputStream outputStream;
  .....
  byte[] streamBytes=new byte[1024];
  int ch=0;
  while((ch=inputStream.read(streamBytes)) != -1) {
    outputStream.write(streamBytes, 0, ch);
  }
  outputStream.flush();
  

  
  
• BufferedImage to ByteArrayInputStream
  

  BufferedImage bufferedImage;
  String formatName="jpeg";
  ......
  ByteArrayOutputStream byteArrayOutputStream=new ByteArrayOutputStream();
  ImageIO.write(bufferedImage,formatName,byteArrayOutputStream);
  byte[] imageBytes=byteArrayOutputStream.toByteArray();
  ByteArrayInputStream byteArrayInputStream=new ByteArrayInputStream(imageBytes);

• ByteArrayOutputStream to BufferedImage
  

  ByteArrayOutputStream byteArrayOutputStream=null;
  byte[] bytes=byteArrayOutputStream.toByteArray();
  ...
  ByteArrayInputStream  byteArrayInputStream=new ByteArrayInputStream(bytes);
  BufferedImage bufferedImage=ImageIO.read(byteArrayInputStream);
  

• Resize and Scale BufferedImage
  

  BufferedImage bufferedImage;
  .....
  //scale buffered image and create new Image Object
  Image tmpImage=bufferedImage.getScaledInstance((int)newImageWidth,(int)newImageHeight,Image.SCALE_AREA_AVERAGING);
  //create new BufferedImage object
  BufferedImage resizeImage=new BufferedImage((int)newImageWidth,(int)newImageHeight,bufferedImage.getType());
  //create new Graphics for BuffereImage and output Temporary Image object into it.
  Graphics2D resizeImageGraphics=resizeImage.createGraphics();
  resizeImageGraphics.drawImage(tmpImage,0,0,null);