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What's the difference between constructors and other methods?
What's the difference between constructors and other methods? Constructors must have the same name as the class and can not return a value. They are only called once while regular methods could be called many times.
2012-08-27, 2530👍, 0💬

What is the difference between the paint() and repaint() methods?
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.
2012-07-26, 2530👍, 0💬

Why does Perl not have overloaded functions?
Why does Perl not have overloaded functions? Because you can inspect the argument count, return context, and object types all by yourself. In Perl, the number of arguments is trivially available to a function via the scalar sense of @_, the return context via wantarray(), and the types of the argume...
2013-09-06, 2529👍, 0💬

I can’t import the COM object that I have on my machine. Did you write that object?
I can’t import the COM object that I have on my machine. Did you write that object? You can only import your own objects. If you need to use a COM component from another developer, you should obtain a Primary Interop Assembly (PIA) from whoever authored the original object. The answer to (5) is o...
2014-12-04, 2528👍, 0💬

The code used to turn off buffering is * Buffering = false...
The code used to turn off buffering is * Buffering = false... The code used to turn off buffering is * Buffering = false * OutputBuffer = false * BufferOutput = false * Buffer = Off Answer1: Buffer=true Answer2: Buffer=false
2014-03-14, 2528👍, 0💬

What is the List interface?
What is the List interface? The List interface provides support for ordered collections of objects.
2012-09-24, 2528👍, 0💬

What are use cases?
What are use cases? A use case describes a situation that a program might encounter and what behavior the program should exhibit in that circumstance. It is part of the analysis of a program. The collection of use cases should, ideally, anticipate all the standard circumstances and many of the extra...
2012-08-15, 2528👍, 0💬

I wrote a little wrapper around malloc ...
I wrote a little wrapper around malloc, but it doesn't work: #include lt;stdio.h> #include lt;stdlib.h> mymalloc(void *retp, size_t size) { retp = malloc(size); if(retp == NULL) { fprintf(stderr, "out of memory\n"); exit(EXIT_FAILURE); } } Are you sure the function initialized what you thought it di...
2016-06-10, 2525👍, 0💬

What does this do? gacutil /l | find /i “about”
What does this do? gacutil /l | find /i “about” Answer1: This command is used to install strong typed assembly in GAC Answer2: gacutil.exe is used to install strong typed assembly in GAC. gacutil.exe /l is used to lists the contents of the global assembly cache. |(pipe) symbol is used to filte...
2014-02-19, 2525👍, 0💬

What are the different types of inner classes?
What are the different types of inner classes? There are four different types of inner classes in Java. They are: a)Static member classes , a static member class has access to all static methods of the parent, or top-level, class b) Member classes, the member class is instance specific and has acces...
2012-09-07, 2525👍, 0💬

What interface must an object implement before it can be written to a stream as an object?
What interface must an object implement before it can be written to a stream as an object? An object must implement the Serializable or Externalizable interface before it can be written to a stream as an object.
2012-08-06, 2522👍, 0💬

Why are the interfaces more flexible than abstract classes?
Why are the interfaces more flexible than abstract classes? --An interface-defined type can be implemented by any class in a class hierarchy and can be extended by another interface. In contrast, an abstract-class-defined type can be implemented only by classes that subclass the abstract class. --An...
2013-03-06, 2516👍, 0💬

What event results from the clicking of a button?
What event results from the clicking of a button? The ActionEvent event is generated as the result of the clicking of a button.
2012-12-06, 2516👍, 0💬

Can a double value be cast to a byte?
Can a double value be cast to a byte? Yes, a double value can be cast to a byte.
2012-10-25, 2512👍, 0💬

What is shallow copy or shallow clone in array cloning?
What is shallow copy or shallow clone in array cloning? Cloning an array invloves creating a new array of the same size and type and copying all the old elements into the new array. But such copy is called shallow copy or shallow clone because any changes to the object would be reflected in both arr...
2012-09-05, 2512👍, 0💬

How many languages .NET is supporting now?
How many languages .NET is supporting now? When .NET was introduced it came with several languages. VB.NET, C#, COBOL and Perl, etc. The site DotNetLanguages.Net says 44 languages are supported.
2013-09-26, 2511👍, 0💬

How to pass information from JSP to included JSP?
How to pass information from JSP to included JSP? Using &lt;%jsp:param&gt; tag.
2013-08-13, 2510👍, 0💬

How do you call unmanaged methods from your .NET code through PInvoke?
How do you call unmanaged methods from your .NET code through PInvoke? Supply a DllImport attribute. Declare the methods in your .NET code as static extern. Do not implement the methods as they are implemented in your unmanaged code, you’re just providing declarations for method signatures.
2014-12-08, 2509👍, 0💬

What is a Container in a GUI?
What is a Container in a GUI? A Container contains and arranges other components (including other containers) through the use of layout managers, which use specific layout policies to determine where components should go as a function of the size of the container.
2012-08-13, 2508👍, 0💬

What is the difference between the Reader/Writer class hierarchy and the InputStream/OutputStream class hierarchy?
What is the difference between the Reader/Writer class hierarchy and the InputStream/OutputStream class hierarchy? The Reader/Writer class hierarchy is character-oriented, and the InputStream/OutputStream class hierarchy is byte-oriented.
2012-11-15, 2507👍, 0💬

How would you make a copy of an entire Java object with its state?
How would you make a copy of an entire Java object with its state? Have this class implement Cloneable interface and call its method clone().
2013-04-16, 2505👍, 0💬

What is the purpose of the finally clause of a try-catch-finally statement? garbage collector?
What is the purpose of the finally clause of a try-catch-finally statement? garbage collector? The finally clause is used to provide the capability to execute code no matter whether or not an exception is thrown or caught.
2012-10-23, 2504👍, 0💬

What is polymorphism?
What is polymorphism? Polymorphism means "having many forms". It allows methods (may be variables) to be written that needn't be concerned about the specifics of the objects they will be applied to. That is, the method can be specified at a higher level of abstraction and can be counted on to work e...
2012-08-14, 2504👍, 0💬

How do you generate an RCW from a COM object?
How do you generate an RCW from a COM object? Use the Type Library Import utility shipped with SDK. tlbimp COMobject.dll /out:.NETobject.dll or reference the COM library from Visual Studio in your project.
2014-12-04, 2503👍, 0💬

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