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    <p>Answering my own question:</p> <p><a href="http://download.oracle.com/javase/6/docs/api/java/awt/Container.html#add%28java.awt.Component,%20int%29">Container.add(Component, int)</a> and <a href="http://download.oracle.com/javase/6/docs/api/java/awt/Container.html#setComponentZOrder%28java.awt.Component,%20int%29">Container.setComponentZOrder(Component, int)</a> are virtually identical. The former invokes removeNotify() while the latter does not (for performance reasons).</p> <p>Container-layering only works if <a href="http://download.oracle.com/javase/6/docs/api/javax/swing/JComponent.html#isOptimizedDrawingEnabled%28%29http://download.oracle.com/javase/6/docs/api/javax/swing/JLayeredPane.html#isOptimizedDrawingEnabled%28%29">JComponent.isOptimizedDrawingEnabled()</a> returns false. One implementation that just-so-happens to return false is... you guessed it: <a href="http://download.oracle.com/javase/6/docs/api/javax/swing/JLayeredPane.html">JLayeredPane</a></p> <p>Using Container-layering is discouraged because it can have <a href="http://download.oracle.com/javase/6/docs/api/javax/swing/JLayeredPane.html">unexpected side-effects</a>.</p> <p>Finally, it is worth noting that while Container declares <a href="http://download.oracle.com/javase/6/docs/api/java/awt/Container.html#add%28java.awt.Component,%20int%29">add(Component, int)</a> it doesn't actually paint layered components properly. <a href="http://download.oracle.com/javase/6/docs/api/javax/swing/JComponent.html">JComponent</a> and its subclasses do.</p> <p>Another interesting find: never invoke repaint() on a child of JLayeredPane. This will cause the component to paint itself on top regardless of its z-order. You should only invoke repaint() on the JLayeredPane itself.</p>
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    1. CORe "never invoke repaint() on a child of JLayeredPane": I'm curious about what type of child component you found this with. I ran into [a similar problem](http://stackoverflow.com/questions/5668721/jmenuitems-painting-over-higher-components-in-jlayeredpane) and determined that, in my case at least, it was an issue with JMenuItems specifically. They behave as if they're always on top (unless they're transparent).
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      1. USAaron Novstrup
    2. CO@Aaron, I don't remember which component I used but when you think about it it makes sense that all components will behave they are always on top. paint() is meant to assume that you will set the clip bounds to prevent it from drawing outside the desired bounds. When you invoking repaint() directly on a child component (with no bounds) you are essentially asking for it to ignore its parent. In other words, this isn't a bug in the Swing implementation. It's user error.
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    3. COActually that's not correct. See [Painting in AWT and Swing](http://java.sun.com/products/jfc/tsc/articles/painting/), specifically the Paint Processing section. It states that when `repaint()` is called on a JComponent, the RepaintManager uses the clip rectangle and the component's `opaque` and `isOptimizedDrawingEnabled` properties to determine the 'root' component from which the paint operation must begin. Most components, in fact, do not behave as if they're always on top (i.e. `alwaysOnTop()` returns `false` by default).
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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