How to write an Image without running out of memory in Java?

final BufferedImage img = new BufferedImage(3500, 2480, BufferedImage.TYPE_BYTE_INDEXED);
final Graphics2D g2D = img.createGraphics();
g2D.setBackground(Color.white);
g2D.clearRect(0, 0, width, height);

(full code in this question).

This code results in a Java Heap Space exception although I've set the jvm attribute to 3GB. Could that be the problem?

Anyway isn't it possible t开发者_JAVA百科o draw the image with less memory? I'm after an A4-size BMP for printing, only with text. Most of the time it's black-and-white only, while at some times I'll need to use blue, pink, and gray too.

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There is something very fishy about the facts stated in your question. Unless I'm mistakened, that BufferedImage uses 1 byte per pixel, and therefore 3500 x 2480 bytes ... around 10Mbytes. But you claim to have set the heap size to 3Gbytes.

What JVM options did you actually use?