When is the finally clause of a try-catch-finally statement executed?
The finally clause of the try-catch-finally statement is always executed unless the thread of execution terminates or an exception occurs within the execution of... Read more »
Archive for May, 2007
When does the compiler supply a default constructor for a class?
The compiler supplies a default constructor for a class if no other constructors are provided. Read more »
How does multithreading take place on a computer with a single CPU?
The operating system’s task scheduler allocates execution time to multiple tasks. By quickly switching between executing tasks, it creates the impression that... Read more »
Which Math method is used to calculate the absolute value of a number?
The abs() method is used to calculate absolute values. Read more »
Can an exception be rethrown?
Yes, an exception can be rethrown. Read more »
What is the purpose of the File class?
The File class is used to create objects that provide access to the files and directories of a local file system. Read more »
What is the difference between the paint() and repaint() methods?
The paint() method supports painting via a Graphics object. The repaint() method is used to cause paint() to be invoked by the AWT painting thread. Read more »
What is the difference between static and non-static variables?
A static variable is associated with the class as a whole rather than with specific instances of a class. Non-static variables take on unique values with each object... Read more »
What modifiers can be used with a local inner class?
A local inner class may be final or abstract. Read more »
What is the Collection interface?
The Collection interface provides support for the implementation of a mathematical bag - an unordered collection of objects that may contain duplicates. Read more »
What advantage do Java’s layout managers provide over traditional windowing systems?
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... Read more »
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... Read more »
What is the difference between a while statement and a do statement?
A while statement checks at the beginning of a loop to see whether the next loop iteration should occur. A do statement checks at the end of a loop to see whether... Read more »
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. Read more »
What event results from the clicking of a button?
The ActionEvent event is generated as the result of the clicking of a button. Read more »