graphics.drawRect()方法

drawRect方法的官方API文档描述

drawRect

public void drawRect(int x,

                     int y,

                     int width,

                     int height)

Draws the outline of the specified rectangle. The left and right edges of the rectangle are at x and x + width. The top and bottom edges are at y and y + height. The rectangle is drawn using the graphics context's current color.

Parameters:

x - the x coordinate of the rectangle to be drawn.

y - the y coordinate of the rectangle to be drawn.

width - the width of the rectangle to be drawn.

height - the height of the rectangle to be drawn.

width和height的描述是错误的。

实践告诉我们，width,height参数应该是右下角的点的坐标。

巴特西

graphics.drawRect()方法

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