Java Advanced Java - Technical Questions and Answers

101.	Is "abc" a primitive value?
	Answer: The String literal "abc" is not a primitive value. It is a String object. Workspace Report errors ... Name : Email: View Answer

102.	What is the relationship between an event-listener interface and an event-adapter class?
	Answer: An event-listener interface defines the methods that must be implemented by an event handler for a particular kind of event. An event adapter provides a default implementation of an event-listener interface. Workspace Report errors ... Name : Email: View Answer

103.	What restrictions are placed on the values of each case of a switch statement?
	Answer: During compilation, the values of each case of a switch statement must evaluate to a value that can be promoted to an int value. Workspace Report errors ... Name : Email: View Answer

104.	What modifiers may be used with an interface declaration?
	Answer: An interface may be declared as public or abstract. Workspace Report errors ... Name : Email: View Answer

105.	Is a class a subclass of itself?
	Answer: A class is a subclass of itself. Workspace Report errors ... Name : Email: View Answer

106.	What is the highest-level event class of the event-delegation model?
	Answer: The java.util.EventObject class is the highest-level class in the event-delegation class hierarchy. Workspace Report errors ... Name : Email: View Answer

107.	What event results from the clicking of a button?
	Answer: The ActionEvent event is generated as the result of the clicking of a button. Workspace Report errors ... Name : Email: View Answer

108.	How can a GUI component handle its own events?
	Answer: A component can handle its own events by implementing the required event-listener interface and adding itself as its own event listener. Workspace Report errors ... Name : Email: View Answer

109.	How are the elements of a GridBagLayout organized?
	Answer: The elements of a GridBagLayout are organized according to a grid. However, the elements are of different sizes and may occupy more than one row or column of the grid. In addition, the rows and columns may have different sizes. Workspace Report errors ... Name : Email: View Answer

110.	What advantage do Java's layout managers provide over traditional windowing systems?
	Answer: Java uses layout managers to lay out components in a consistent manner across all windowing platforms. Since Java's layout managers aren't tied to absolute sizing and positioning, they are able to accomodate platform-specific differences among windowing systems. Workspace Report errors ... Name : Email: View Answer