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What does it mean that a class or member is final?
What does it mean that a class or member is final? A final class can no longer be subclassed. Mostly this is done for security reasons with basic classes like String and Integer. It also allows the compiler to make some optimizations, and makes thread safety a little easier to achieve. Methods may b... 2013-02-18, 2317👍, 0💬

What is a Manifest?
What is a Manifest? An assembly manifest contains all the metadata needed to specify the assembly's version requirements and security identity, and all metadata needed to define the scope of the assembly and resolve references to resources and classes. The assembly manifest can be stored in either a... 2013-10-08, 2316👍, 0💬

What is a platform?
What is a platform? A platform is the hardware or software environment in which a program runs. Most platforms can be described as a combination of the operating system and hardware, like Windows 2000 and XP, Linux, Solaris, and MacOS. 2013-03-29, 2316👍, 0💬

malloc is returning crazy pointer values ...
malloc is returning crazy pointer values, I have included the line extern void *malloc(); before I call it. malloc accepts an argument of type size_t, and size_t may be defined as unsigned long. If you are passing ints (or even unsigned ints), malloc may be receiving garbage (or similarly if you are... 2016-04-15, 2314👍, 0💬

What is Externalizable?
What is Externalizable? Externalizable is an Interface that extends Serializable Interface. And sends data into Streams in Compressed Format. It has two methods, writeExternal(ObjectOuput out) and readExternal(ObjectInput in) 2013-02-05, 2314👍, 0💬

What interface is extended by AWT event listeners?
What interface is extended by AWT event listeners? All AWT event listeners extend the java.util.EventListener interface. 2013-01-14, 2312👍, 0💬

What is casting?
What is casting? There are two types of casting, casting between primitive numeric types and casting between object references. Casting between numeric types is used to convert larger values, such as double values, to smaller values, such as byte values. Casting between object references is used to ... 2012-12-20, 2312👍, 0💬

Is sizeof a keyword?
Is sizeof a keyword? The sizeof operator is not a keyword in Java. 2013-04-11, 2311👍, 0💬

What is the Java Virtual Machine?
What is the Java Virtual Machine? The Java Virtual Machine is a software that can be ported onto various hardware-based platforms. 2013-02-20, 2311👍, 0💬

Suppose I call a COM object from a .NET applicaiton, but COM object throws an error. What happens on the .NET end?
Suppose I call a COM object from a .NET applicaiton, but COM object throws an error. What happens on the .NET end? COM methods report errors by returning HRESULTs; .NET methods report them by throwing exceptions. The runtime handles the transition between the two. Each exception class in the .NET Fr... 2014-12-15, 2310👍, 0💬

How do you print out the next line from a filehandle with all its bytes reversed?
How do you print out the next line from a filehandle with all its bytes reversed? print scalar reverse scalar &lt;FH&gt; Surprisingly enough, you have to put both the reverse and the &lt;FH&gt; into scalar context separately for this to work. 2013-09-04, 2310👍, 0💬

How do I use comments within a JSP page?
How do I use comments within a JSP page? You can use "JSP-style" comments to selectively block out code while debugging or simply to comment your scriptlets. JSP comments are not visible at the client. For example: --%&gt; You can also use HTML-style comments anywhere within your JSP page. These... 2013-07-25, 2310👍, 0💬

What modifiers are allowed for methods in an Interface?
What modifiers are allowed for methods in an Interface? Only public and abstract modifiers are allowed for methods in interfaces. 2013-06-19, 2308👍, 0💬

Can applets communicate with each other?
Can applets communicate with each other? At this point in time applets may communicate with other applets running in the same virtual machine. If the applets are of the same class, they can communicate via shared static variables. If the applets are of different classes, then each will need a refere... 2013-06-14, 2308👍, 0💬

How are this and super used?
How are this and super used? this is used to refer to the current object instance. super is used to refer to the variables and methods of the superclass of the current object instance. 2013-01-10, 2308👍, 0💬

What is the difference between error and an exception?
What is the difference between error and an exception? An error is an irrecoverable condition occurring at runtime. Such as OutOfMemory error. These JVM errors and you can not repair them at runtime. While exceptions are conditions that occur because of bad input etc. e.g. FileNotFoundException will... 2013-05-29, 2307👍, 0💬

Describe the principles of OOPS
Describe the principles of OOPS There are three main principals of oops which are called Polymorphism, Inheritance and Encapsulation. 2013-02-28, 2307👍, 0💬

What method must be implemented by all threads?
What method must be implemented by all threads? All tasks must implement the run() method, whether they are a subclass of Thread or implement the Runnable interface. 2013-01-29, 2307👍, 0💬

What happens when you add a double value to a String?
What happens when you add a double value to a String? The result is a String object. 2013-01-08, 2307👍, 0💬

What type of parameter passing does Java support?
What type of parameter passing does Java support? In Java the arguments are always passed by value . 2013-05-16, 2305👍, 0💬

How to make a class or a bean serializable?
How to make a class or a bean serializable? By implementing either the java.io.Serializable interface, or the java.io.Externalizable interface. As long as one class in a class's inheritance hierarchy implements Serializable or Externalizable, that class is serializable. 2013-04-01, 2304👍, 0💬

What is the main difference between Java platform and other platforms?
What is the main difference between Java platform and other platforms? The Java platform differs from most other platforms in that it's a software-only platform that runs on top of other hardware-based platforms. The Java platform has three elements: Java programming language The Java Virtual Machin... 2013-02-19, 2304👍, 0💬

How are the elements of a GridLayout organized?
How are the elements of a GridLayout organized? The elements of a GridBad layout are of equal size and are laid out using the squares of a grid. 2013-01-01, 2304👍, 0💬

Which of these is a difference between C++ and Perl?
Which of these is a difference between C++ and Perl? Perl can have objects whose data cannot be accessed outside its class, but C++ cannot. Perl can use closures with unreachable private data as objects, and C++ doesn't support closures. Furthermore, C++ does support pointer arithmetic via `int *ip ... 2013-08-22, 2303👍, 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