How can I edit a jpg image through Java?

Question

I have loaded a jpg image in which I want to draw letters and circles, given a x,y coordinate.

I have been trying to figure out the paintIcon of the ImageIcon class

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Answer 1

I have used Java Advanced Imaging library (http://java.sun.com/products/java-media/jai/forDevelopers/jaifaq.html), but you can also look at ImageJ (http://rsbweb.nih.gov/ij/index.html)