Cursor Control on extension of JPanel

I have a time-series graphing class that extends JPanel. I want to be able to position the cursor very accurately on the graph and would like to use the arrow keys to 'nudge' the cursor around the graph. I can't find any suitable methods for controlling cursor movement from the Java program. Am I missing something obvious?

http://forum.java.sun.com/thread.jsp?forum=4&thread=157024
http://forum.java.sun.com/thread.jsp?forum=5&thread=11550
http://forum.java.sun.com/thread.jsp?forum=5&thread=8978

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