16 bits bit depth

I have an image viewed in an applet. How do开发者_如何学JAVA I save the image as 16 bits bit depth png format? I'm using java.

Conversion to 16 bit is not a part of saving the image data. You'll first have to convert the image data itself by copying to to a BufferedImage with a 16 bit ColorModel. Then just save the result as PNG.