Java如何使用GUI绘制线条
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public void paintComponent(Graphics g){
super.paintComponent(g);
Graphcis2D g2d = (Graphics2D)g;
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g.setStroke(new BasicStroke(2f));
g.setPaint(Color.BLUE);
g.drawLine(x1,y1,x2,y2);
g.draw(new Line2D.Double(x1d,y1d,x2d,y2d));
}
在JPanel子类的paintComponent方法里绘制。
super.paintComponent(g);
Graphcis2D g2d = (Graphics2D)g;
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g.setStroke(new BasicStroke(2f));
g.setPaint(Color.BLUE);
g.drawLine(x1,y1,x2,y2);
g.draw(new Line2D.Double(x1d,y1d,x2d,y2d));
}
在JPanel子类的paintComponent方法里绘制。
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