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Suppose we have defined a class called mPoint for a movable point which has position (x,y) Color color and can be moved by amount (dx,dy) at each step
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mPoint BunchofPoints[2]; /* defines BunchofPoints to be 2 dimensional array of mPoint objects -- it does not instantiate BunchofPoints */
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FirstPoint = new mPoint(); /* Allocates an instance of mPoint and invokes Constructor of mPoint to Initialize */
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FirstPoint.dx=5;
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FirstPoint.dy=5; /* Redefines values of instance variables dx,dy for object FirstPoint */
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mPoint could be defined by
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import java.awt.*;
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public class mPoint {
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int x, y;
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int dx = 1, dy = 1;
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Color color = Color.black;
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}
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