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copied!<p>Colors in Java are composed by <code>RGB</code>values.</p> <pre><code>Color c = new Color(red, green, blue) </code></pre> <p><code>Red</code>, <code>Green</code>and <code>Blue</code> all have <code>integer</code> values between 0 and 255. Netbeans visual editor allows you to set both <code>maximum</code> and <code>minimum</code> values for your slider.</p> <p>To add transparency to a color use</p> <pre><code>Color c = new Color(red, green, blue, alpha) </code></pre> <p><code>Red</code>, <code>Green</code>, <code>Blue</code> and <code>Alpha</code>all have float values between 0.0 and 1.0.</p> <p>To change color when the slider is moved, add an event for when the mouse is dragged (you can do this using the visual editor) and use <code>slider.getValue()</code> to retrieve the value.</p> <p>To paint the rectangle near the <em>sliders</em> (there should be at least 3 sliders, one for each rbg component) retrieve the slider position and dimensions with <code>slider.getBounds()</code> (bounds contains <code>x</code> and <code>y</code> coordinates plus <code>width</code> and <code>height</code>)</p> <p>Example (draws a rectangle 30x30 20 pixels right the sliders)</p> <pre><code>private void mouseDragged(java.awt.event.MouseEvent evt) { color = new Color(sliderRed.getValue(), sliderGreen.getValue(), sliderBlue.getValue()); this.repaint(); } public void paint(Graphics g) { g.setColor(color) g.fillRect(sliderRed.getBounds().x + sliderRed.getBounds().width + 20, sliderRed.getBounds().y, 30, 30); } </code></pre>

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