Java Advanced Java - Technical Questions and Answers

31.	Name three Component subclasses that support painting.
	Answer: The Canvas, Frame, Panel, and Applet classes support painting. Workspace Report errors ... Name : Email: View Answer

32.	What value does readLine() return when it has reached the end of a file?
	Answer: The readLine() method returns null when it has reached the end of a file. Workspace Report errors ... Name : Email: View Answer

33.	What is the immediate superclass of the Dialog class?
	Answer: Window. Workspace Report errors ... Name : Email: View Answer

34.	What is clipping?
	Answer: Clipping is the process of confining paint operations to a limited area or shape. Workspace Report errors ... Name : Email: View Answer

35.	What is a native method?
	Answer: A native method is a method that is implemented in a language other than Java. Workspace Report errors ... Name : Email: View Answer

36.	Can a for statement loop indefinitely?
	Answer: Yes, a for statement can loop indefinitely. For example, consider the following: for(;;) ; Workspace Report errors ... Name : Email: View Answer

37.	What are order of precedence and associativity, and how are they used?
	Answer: Order of precedence determines the order in which operators are evaluated in expressions. Associatity determines whether an expression is evaluated left-to-right or right-to-left. Workspace Report errors ... Name : Email: View Answer

38.	When a thread blocks on I/O, what state does it enter?
	Answer: A thread enters the waiting state when it blocks on I/O. Workspace Report errors ... Name : Email: View Answer

39.	To what value is a variable of the String type automatically initialized?
	Answer: The default value of an String type is null. Workspace Report errors ... Name : Email: View Answer

40.	What is the catch or declare rule for method declarations?
	Answer: If a checked exception may be thrown within the body of a method, the method must either catch the exception or declare it in its throws clause. Workspace Report errors ... Name : Email: View Answer