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What is the Set interface?
What is the Set interface? The Set interface provides methods for accessing the elements of a finite mathematical set. Sets do not allow duplicate elements. 2013-01-03, 2570👍, 0💬

What is the GregorianCalendar class?
What is the GregorianCalendar class? The GregorianCalendar provides support for traditional Western calendars. 2012-10-19, 2569👍, 0💬

Which java.util classes and interfaces support event handling?
Which java.util classes and interfaces support event handling? The EventObject class and the EventListener interface support event processing. 2012-09-28, 2568👍, 0💬

What is the difference between the &gt&gt and &gt&gt&gt operators?
What is the difference between the &gt&gt and &gt&gt&gt operators? The &gt&gt operator carries the sign bit when shifting right. The &gt&gt&gt zero-fills bits that have been shifted out. 2012-09-26, 2568👍, 0💬

Why do we need wrapper classes?
Why do we need wrapper classes? It is sometimes easier to deal with primitives as objects. Moreover most of the collection classes store objects and not primitive data types. And also the wrapper classes provide many utility methods also. Because of these resons we need wrapper classes. And since we... 2013-05-27, 2567👍, 0💬

When to Use the Concurrent Low Pause Collector?
When to Use the Concurrent Low Pause Collector? Use the concurrent low pause collector if your application would benefit from shorter garbage collector pauses and can afford to share processor resources with the garbage collector when the application is running. Typically applications which have a r... 2013-03-27, 2566👍, 0💬

What does it mean that a method or class is abstract?
What does it mean that a method or class is abstract? An abstract class cannot be instantiated. Only its subclasses can be instantiated. You indicate that a class is abstract with the abstract keyword like this: public abstract class Container extends Component { Abstract classes may contain abstrac... 2013-02-19, 2565👍, 0💬

Which class is the immediate superclass of the Container class?
Which class is the immediate superclass of the Container class? Component 2012-12-17, 2564👍, 0💬

What is a layout manager?
What is a layout manager? A layout manager is an object that is used to organize components in a container. 2013-01-16, 2563👍, 0💬

Which containers may have a MenuBar?
Which containers may have a MenuBar? Frame 2012-10-30, 2563👍, 0💬

Name three Component subclasses that support painting.
Name three Component subclasses that support painting. The Canvas, Frame, Panel, and Applet classes support painting. 2012-10-04, 2560👍, 0💬

Can I have multiple main methods in the same class?
Can I have multiple main methods in the same class? No the program fails to compile. The compiler says that the main method is already defined in the class. 2013-05-08, 2559👍, 0💬

What is the Locale class?
What is the Locale class? The Locale class is used to tailor program output to the conventions of a particular geographic, political, or cultural region. 2013-06-11, 2557👍, 0💬

How are commas used in the initialization and iteration parts of a for statement?
How are commas used in the initialization and iteration parts of a for statement? Commas are used to separate multiple statements within the initialization and iteration parts of a for statement. 2012-10-31, 2557👍, 0💬

What is the purpose of finalization?
What is the purpose of finalization? The purpose of finalization is to give an unreachable object the opportunity to perform any cleanup processing before the object is garbage collected. 2012-10-17, 2557👍, 0💬

What are wrapper classes?
What are wrapper classes? Wrapper classes are classes that allow primitive types to be accessed as objects. 2012-10-01, 2556👍, 0💬

What are E and PI?
What are E and PI? E is the base of the natural logarithm and PI is mathematical value pi. 2013-01-04, 2552👍, 0💬

What modifiers may be used with an inner class that is a member of an outer class?
What modifiers may be used with an inner class that is a member of an outer class? A (non-local) inner class may be declared as public, protected, private, static, final, or abstract. 2012-09-25, 2551👍, 0💬

What is the basic difference between the 2 approaches to exception handling.
520. What is the basic difference between the 2 approaches to exception handling. 1. try catch block and 2. specifying the candidate exceptions in the throws clause? When should you use which approach? In the first approach as a programmer of the method, you urself are dealing with the exception. Th... 2013-06-03, 2550👍, 0💬

Describe synchronization in respect to multithreading.
Describe synchronization in respect to multithreading. With respect to multithreading, synchronization is the capability to control the access of multiple threads to shared resources. Without synchonization, it is possible for one thread to modify a shared variable while another thread is in the pro... 2013-04-23, 2550👍, 0💬

Which Container method is used to cause a container to be laid out and redisplayed?
Which Container method is used to cause a container to be laid out and redisplayed? validate() 2012-10-22, 2550👍, 0💬

What is the % operator?
What is the % operator? It is referred to as the modulo or remainder operator. It returns the remainder of dividing the first operand by the second operand. 2012-11-09, 2549👍, 0💬

If a variable is declared as private, where may the variable be accessed?
If a variable is declared as private, where may the variable be accessed? A private variable may only be accessed within the class in which it is declared. 2012-11-07, 2549👍, 0💬

How many times may an object's finalize() method be invoked by the garbage collector?
How many times may an object's finalize() method be invoked by the garbage collector? An object's finalize() method may only be invoked once by the garbage collector. 2012-10-23, 2549👍, 0💬

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.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML