Java Advanced Java - Technical Questions and Answers

21.	Which method of the Component class is used to set the position and size of a component?
	Answer: setBounds() method is used to set the position and size of a component. Workspace Report errors ... Name : Email: View Answer

22.	What is the difference between yielding and sleeping?
	Answer: When a task invokes its yield() method, it returns to the ready state. When a task invokes its sleep() method, it returns to the waiting state. Workspace Report errors ... Name : Email: View Answer

23.	Which java.util classes and interfaces support event handling?
	Answer: The EventObject class and the EventListener interface support event processing. Workspace Report errors ... Name : Email: View Answer

24.	Is sizeof a keyword?
	Answer: The sizeof operator is not a keyword. Workspace Report errors ... Name : Email: View Answer

25.	What are wrapped classes?
	Answer: Wrapped classes are classes that allow primitive types to be accessed as objects. Workspace Report errors ... Name : Email: View Answer

26.	Does garbage collection guarantee that a program will not run out of memory?
	Answer: Garbage collection does not guarantee that a program will not run out of memory. It is possible for programs to use up memory resources faster than they are garbage collected. It is also possible for programs to create objects that are not subject to garbage collection. Workspace Report errors ... Name : Email: View Answer

27.	What restrictions are placed on the location of a package statement within a source code file?
	Answer: A package statement must appear as the first line in a source code file (excluding blank lines and comments). Workspace Report errors ... Name : Email: View Answer

28.	Can an object's finalize() method be invoked while it is reachable?
	Answer: 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. Workspace Report errors ... Name : Email: View Answer

29.	What is the immediate superclass of the Applet class?
	Answer: Panel. Workspace Report errors ... Name : Email: View Answer

30.

What is the difference between preemptive scheduling and time slicing?