Search your topic in Java2share
Home > FAQs
eXTReMe Tracker


CoreJava FAQs


Untitled Document

Q49. Can an object's finalize() method be invoked while it is reachable?
An object's finalize() method cannot be invoked by the garbage collector while the object is still reachable. However, an object's finalize() method may be invoked by other objects.

Q50. What is the immediate superclass of the Applet class?
Panel

Q51. What is the difference between preemptive scheduling and time slicing?
Under preemptive scheduling, the highest priority task executes until it enters the waiting or dead states or a higher priority task comes into existence. Under time slicing, a task executes for a predefined slice of time and then reenters the pool of ready tasks. The scheduler then determines which task should execute next, based on priority and other factors.

Q52 Name three Component subclasses that support painting.
The Canvas, Frame, Panel, and Applet classes support painting.