public void translate (int dx, int dy)

Translates this Rectangle the indicated distance, to the right along the X coordinate axis, and downward along the Y coordinate axis.

Parameters:
dx    the distance to move this Rectangle along the X axis
dy    the distance to move this Rectangle along the Y axis

See also:
java.awt.Rectangle.setLocation(int, int), java.awt.Rectangle.setLocation(java.awt.Point)