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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, 2427👍, 0💬

Where and how can you use a private constuctor.
Where and how can you use a private constuctor. Private constructor can be used if you do not want any other class to instanstiate it by using new. The instantiation is done from a static public method, which is used when dealing with the factory method pattern. 2012-08-17, 2427👍, 0💬

What is synchronization and why is it important?
What is synchronization and why is it important? With respect to multithreading, synchronization is the capability to control the access of multiple threads to shared resources. Without synchronization, it is possible for one thread to modify a shared object while another thread is in the process of... 2013-06-05, 2426👍, 0💬

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, 2426👍, 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, 2426👍, 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, 2426👍, 0💬

Is there a way I can set the inactivity lease period on a per-session basis?
Is there a way I can set the inactivity lease period on a per-session basis? Typically, a default inactivity lease period for all sessions is set within your JSPengine admin screen or associated properties file. However, if your JSP engine supports the Servlet 2.1 API, you can manage the inactivity ... 2013-07-31, 2425👍, 0💬

Can you retrieve complex data types like structs from the PInvoke calls?
Can you retrieve complex data types like structs from the PInvoke calls? Yes, just make sure you re-declare that struct, so that managed code knows what to do with it. 2014-12-08, 2424👍, 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, 2424👍, 0💬

In the Servlet 2.4 specification SingleThreadModel has been deprecated, why?
In the Servlet 2.4 specification SingleThreadModel has been deprecated, why? Because it is not practical to have such model. Whether you set isThreadSafe to true or false, you should take care of concurrent client requests to the JSP page by synchronizing access to any shared objects defined at the ... 2013-07-16, 2423👍, 0💬

How can I customize the seralization process? i.e. how can one have a control over the serialization process?
How can I customize the seralization process? i.e. how can one have a control over the serialization process? Yes it is possible to have control over serialization process. The class should implement Externalizable interface. This interface contains two methods namely readExternal and writeExternal.... 2013-05-21, 2423👍, 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, 2423👍, 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, 2423👍, 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, 2422👍, 0💬

When is an object subject to garbage collection?
When is an object subject to garbage collection? An object is subject to garbage collection when it becomes unreachable to the program in which it is used. 2013-01-29, 2421👍, 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, 2421👍, 0💬

What is the difference between declaring a variable and defining a variable?
What is the difference between declaring a variable and defining a variable? In declaration we just mention the type of the variable and it's name. We do not initialize it. But defining means declaration + initialization. e.g String s; is just a declaration while String s = new String ("abcd"); Or S... 2013-05-14, 2420👍, 0💬

What is the SimpleTimeZone class?
What is the SimpleTimeZone class? The SimpleTimeZone class provides support for a Gregorian calendar. 2012-11-16, 2420👍, 0💬

What if the main method is declared as private?
What if the main method is declared as private? The program compiles properly but at runtime it will give "Main method not public." message. 2013-05-02, 2418👍, 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, 2418👍, 0💬

What does length(%HASH) produce if you have thirty-seven random keys in a newly created hash?
What does length(%HASH) produce if you have thirty-seven random keys in a newly created hash? 5 length() is a built-in prototyped as sub length($), and a scalar prototype silently changes aggregates into radically different forms. The scalar sense of a hash is false (0) if it's empty, otherwise it's... 2013-09-13, 2417👍, 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, 2416👍, 0💬

Does a class inherit the constructors of its superclass?
Does a class inherit the constructors of its superclass? A class does not inherit constructors from any of its super classes. 2012-11-26, 2415👍, 0💬

What is the test coverage?
From the following code, atleast how many test cases are needed to guarantee 100%coverage Input Number_of_Coins Total=0 While Number_of_Coins>0 Input Value_of_Coin Total=Total + Value_of_Coin Number_Of_Coins=Number_of_Coin s- 1 End Loop Print "Your coins are worth" & Total What is the correct op... 2014-11-24, 2414👍, 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