The Java Developers Almanac 1.4


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Home > List of Packages > java.awt  [78 examples] > Shapes  [5 examples]

e586. Drawing Simple Shapes

There are two ways to draw basic shapes like circles, ovals, lines, arcs, squares, rectangles, rounded rectangles, and polygons. The first is to use specific drawing methods like Graphics.drawOval(). This example uses these methods. The second is to construct a shape and then use Graphics2D.draw() to draw the shape. See the java.awt.geom package for examples that create shapes.
    // See e575 The Quintessential Drawing Program
    public void paint(Graphics g) {
        Graphics2D g2d = (Graphics2D)g;
    
        g2d.drawLine(x1, y1, x2, y2);
        g2d.drawOval(x, y, w, h);
        g2d.drawRect(x, y, w, h);
    
        // A start angle of 0 represents a 3 o'clock position, 90 represents a 12 o'clock position,
        // and -90 (or 270) represents a 6 o'clock position
        int startAngle = 45;
        int arcAngle = -60;
        g2d.drawArc(x, y, w, h, startAngle, arcAngle);
    
        g2d.drawRoundRect(x, y, w, h, arcWidth, arcHeight);
    
        Polygon polygon = new Polygon();
        polygon.addPoint(x, y);
        // Add more points...
        g2d.drawPolygon(polygon);
    }

 Related Examples
e587. Filling Basic Shapes
e588. Creating a Shape from a Stroked Shape
e589. Stroking or Filling a Shape
e590. Drawing a Pie Chart

See also: Colors    Components    Containers    Cursors    Drawing    Events    Focus    Frames    GridBagLayout    Images    Simulating Events    Text    The Screen   


© 2002 Addison-Wesley.