Advanced Java Questions and Answer for Interview

101. What is the relationship between clipping and repainting?
When a window is repainted by the AWT painting thread, it sets the clipping regions to the area of the window that requires repainting.

102. Is "abc" a primitive value?
The String literal "abc" is not a primitive value. It is a String object.

103. What is the relationship between an event-listener interface and an event-adapter class?
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.

104. What restrictions are placed on the values of each case of a switch statement?
During compilation, the values of each case of a switch statement must evaluate to a value that can be promoted to an int value.

105. What modifiers may be used with an interface declaration?
An interface may be declared as public or abstract.

106. Is a class a subclass of itself?
A class is a subclass of itself.

107. What is the highest-level event class of the event-delegation model?
The java.util.EventObject class is the highest-level class in the event-delegation class hierarchy.

108. What event results from the clicking of a button?
The ActionEvent event is generated as the result of the clicking of a button.

109. How can a GUI component handle its own events?
A component can handle its own events by implementing the required event-listener interface and adding itself as its own event listener.

110. How are the elements of a GridBagLayout organized?
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.

User Answer

  1. Be the first one to express your answer.

Advanced Java Questions and Answer for Interview