If they are vectors, you could use an SVG Editor (eg, Inkscape) along with Kirill's SVG to Java2D Transcoder to simplify this. It isn't perfect, but Kirill is very responsive in responding to requests for enhancement.
While not what you were looking for, I should mention that XPM (X Pixmap) format is basically a subset of C programming language. XPM2 simplified it more by removing the trappings of C syntax. XPM3 brought them back again.
In a sense XPM image converters are source code generators and translators. You are looking for something similar to output Java AWT, but for many real images or photographs it would be complicated to do analysis on the image to find oval,etc and create the code for drawing them with lines and shapes (well unless the image had filters applied to simplify it, or was an SVG as someone pointed out). It would probably have to convert to a bitmap of some form and keep it in an array in the generated Java source.
It's unclear what you are asking. Two guesses:
You want an existing program that allows you to draw a picture, captures what you do as you draw, and writes each action as a Java command. When you click the "Drawl Oval" tool and click at 0,0 and then at 50,50, it would generate the line g.drawOval(0,0,50,50).
I do not know of any such tool. But the above might help you reword your question so that others can share their knowledge.
You want a program that takes an existing bitmap and converts it into a series of commands that will replicate the bitmap. Other than simply outputting pixels, such a tool is nearly impossible to write; attempting to decompose an arbitrary picture into simple drawing commands is very hard.
In this case, I would recommend simply importing the bitmap as a JPG, PNG, whatever, and using drawImage() instead of using Graphics calls.