e577. Enabling Antialiasing

// See e575 The Quintessential Drawing Program
    public void paint(Graphics g) {
        // Retrieve the graphics context; this object is used to paint shapes
        Graphics2D g2d = (Graphics2D)g;

        // Determine if antialiasing is enabled
        RenderingHints rhints = g2d.getRenderingHints();
        boolean antialiasOn = rhints.containsValue(RenderingHints.VALUE_ANTIALIAS_ON);

        // Enable antialiasing for shapes
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                             RenderingHints.VALUE_ANTIALIAS_ON);

        // Disable antialiasing for shapes
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                             RenderingHints.VALUE_ANTIALIAS_OFF);

        // Draw shapes...; see e586 Drawing Simple Shapes

        // Enable antialiasing for text
        g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                             RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

        // Draw text...; see e591 Drawing Simple Text

        // Disable antialiasing for text
        g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                             RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
    }

原文地址：https://www.cnblogs.com/borter/p/9575637.html