Java开发GUI之图形绘制 原

class DrawPanel extends Panel{
	private static final long serialVersionUID = 1L;
	public DrawPanel() {
		super();
	}
	@Override
	public void paint(Graphics g) {
		// TODO Auto-generated method stub
		super.paint(g);
		Color bg = Color.WHITE;
		Color fg = Color.RED;
		//绘制背景
		g.setColor(bg);
		g.draw3DRect(50, 50, 699, 140, true);
		g.draw3DRect(53, 53, 692, 133, true);
		
		g.setColor(fg);
		//绘制线
		g.drawLine(60, 60, 140, 60);
		//绘制矩形
		g.drawRect(150, 60, 80, 50);
		//绘制圆角矩形
		g.drawRoundRect(240, 60, 80, 50, 25, 25);
		//绘制椭圆
		g.drawOval(330, 60, 80, 50);
		//绘制弧线
		g.drawArc(420, 60, 50, 50, 0, 90);
		//绘制闭合折线
		Polygon polygon = new Polygon();
		polygon.addPoint(510, 60);
		polygon.addPoint(550, 60);
		polygon.addPoint(550, 110);
		polygon.addPoint(590, 110);
		g.drawPolygon(polygon);
		//填充矩形
		g.fillRect(600, 60, 80, 50);
		//填充3D矩形
		g.fill3DRect(60, 120, 80, 50, true);
		//填充圆角矩形
		g.fillRoundRect(150, 120, 80, 50, 25, 25);
		//填充椭圆
		g.fillOval(240, 120, 80, 50);
		//填充弧线
		g.fillArc(330, 120, 50, 50, 0, 90);
		//填充闭合折线
		Polygon polygon2 = new Polygon();
		polygon2.addPoint(390, 120);
		polygon2.addPoint(440, 120);
		polygon2.addPoint(440, 180);
		polygon2.addPoint(490, 180);
		g.fillPolygon(polygon2);
		//绘制文字
		g.drawString("finish draw test!", 500, 150);
	}
}