Before Java 1.5 you couldn't:
AWT and Swing didn't provide this feature. All you could do was to use a (modal) [J]Dialog, and make sure the [J]Dialog is provided with the correct parent/owner in the constructor.
Since Java 1.5:
Window.setAlwaysOnTop(), which is inherited by the other top-level containers like JFrame.
Explain about locks?
Explain about semaphores?
Explain about fully synchronized objects?
Explain about open systems?
Explain about closed subsystems?
Explain about particle canvas?
Explain about state dependence?
State the purpose of why a Java singleton should be used?
Explain the difference between Canonical and GoF form?
Explain about abstract factory method?
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