drawbasic.html
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<TITLE>Drawing Basic Shapes
(Java Developers Almanac Example)
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<META CONTENT="Patrick Chan" NAME="AUTHOR">
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<B><A HREF="../java.awt/pkg.html">java.awt</A></B><font color="#666666" SIZE="-2">
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<B><A HREF="../java.awt/pkg.html#Shapes">Shapes</A></B><font color="#666666" SIZE="-2">
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<h3>
e590.
Drawing Basic Shapes</h3>
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
<code>Graphics.drawOval()</code>. This example uses these methods. The
second is to construct a shape and then use <code>Graphics2D.draw()</code> to
draw the shape. See the <code>java.awt.geom</code> package for examples that
create shapes.
<P> See also <a href="../java.awt/BasicDraw.html" class="eglink"><font size="-1"><b>e580</b> The Quintessential Drawing Program</font></a>.
<pre>
public void paint(Graphics g) {
Graphics2D g2d = (Graphics2D)g;
g2d.drawLine(<font color="#0066ff"><i>x1</i></font>, <font color="#0066ff"><i>y1</i></font>, <font color="#0066ff"><i>x2</i></font>, <font color="#0066ff"><i>y2</i></font>);
g2d.drawOval(<font color="#0066ff"><i>x</i></font>, <font color="#0066ff"><i>y</i></font>, <font color="#0066ff"><i>w</i></font>, <font color="#0066ff"><i>h</i></font>);
g2d.drawRect(<font color="#0066ff"><i>x</i></font>, <font color="#0066ff"><i>y</i></font>, <font color="#0066ff"><i>w</i></font>, <font color="#0066ff"><i>h</i></font>);
// 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 = <font color="#0066ff"><i>45</i></font>;
int arcAngle = <font color="#0066ff"><i>-60</i></font>;
g2d.drawArc(<font color="#0066ff"><i>x</i></font>, <font color="#0066ff"><i>y</i></font>, <font color="#0066ff"><i>w</i></font>, <font color="#0066ff"><i>h</i></font>, startAngle, arcAngle);
g2d.drawRoundRect(<font color="#0066ff"><i>x</i></font>, <font color="#0066ff"><i>y</i></font>, <font color="#0066ff"><i>w</i></font>, <font color="#0066ff"><i>h</i></font>, <font color="#0066ff"><i>arcWidth</i></font>, <font color="#0066ff"><i>arcHeight</i></font>);
Polygon polygon = new Polygon();
polygon.addPoint(<font color="#0066ff"><i>x</i></font>, <font color="#0066ff"><i>y</i></font>);
// Add more points...
g2d.drawPolygon(polygon);
}
</pre>
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Related Examples
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e591. <a class="eglink" href="FillBasic.html?l=rel">
Filling Basic Shapes
</a>
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e592. <a class="eglink" href="StrokeShape.html?l=rel">
Creating a Shape from a Stroked Shape
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e593. <a class="eglink" href="StrokeFill.html?l=rel">
Stroking or Filling a Shape
</a>
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e594. <a class="eglink" href="Pie.html?l=rel">
Drawing a Pie Chart
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See also:
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Colors">
Colors
</a>
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Components">
Components
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Containers">
Containers
</a>
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Cursors">
Cursors
</a>
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Drawing">
Drawing
</a>
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Events">
Events
</a>
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Focus">
Focus
</a>
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Frames">
Frames
</a>
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#GridBagLayout">
GridBagLayout
</a>
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Images">
Images
</a>
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Simulating%20Events">
Simulating Events
</a>
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Text">
Text
</a>
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#The%20Screen">
The Screen
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