How to display a single dot in java?

My teacher ask me to use digital differential analyzer(DDA) routine for rasterizing a line
the problem is i can't use the drawLine() method,i only can draw a lot of dot
so can somebody tell me how to display a single dot????
thanks in advance

In a loop, draw a line with very small difference in x1 and x2 (just a few pixels) so it looks like a dot. Or you can use a dot image and g.drawImage(..). You can also try g.fillOval(..) or fillArc(..)

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