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by: Alan.J.Thackray |
last post by:
I am new to Java.
Since the "main" class has the main() function it it, is this called
before the constructor, or is a constructor totally irrelevant for a
main class, since you never "new" it ?
I am used to C++ whare main exists outside any class.
I have a test "main" class and it appears the constructor is never
called ?
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by: Zenon |
last post by:
Folks,
I have been trying for a week but I cannot debug the following error:
Error E2285 ex5.cpp 141: Could not find a match for
'matrix<complex<double>>::operator =(complex<double>)' in function
main()
Here is the relevant portion of my template class
//***************************************************************************
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by: xuatla |
last post by:
Hi,
I encountered the following compile error of c++ and hope to get your help.
test2.cpp: In member function `CTest CTest::operator+=(CTest&)':
test2.cpp:79: error: no match for 'operator=' in '*this =
CTest::operator+(CTest&)((+t2))'
test2.cpp:49: error: candidates are: CTest CTest::operator=(CTest&)
make: *** Error 1
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by: Ray Stevens |
last post by:
How do you access properties of the main program's class from another form? There does not apear to be an instance variable that can be used.
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by: erin.sebastian |
last post by:
Hello Everyone,
This is my first attempt at coding using an abstract class and i am
getting an error i can't figure out. Here is the back ground.
I have a project that contains an abstract class, it's namespace is
CIG.Intranet.Commons.User and it has 2 methods in it
public abstract getPropertiesHash (string userName) and
public abstract getPropertiesXml (string userName) adn the class name
is called
CPUser.cs
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by: Nunez |
last post by:
Hello,
I need some DETAILED help. I'm trying to download a java game off the internet but an error window pops up which says "Java Virtual Machine, Fail to load Main-Class manifest attribute from C:\Documents and Settings........jar". I downloaded "J2SE Runtime Enviroment 5.0 Update 6" and tested it and it works but I still can't download the game. What should I do?
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by: petschy |
last post by:
hello,
i've run into an error when qualifying a copy ctor 'explicit'. the
strange thing is that i get a compiler error only if the class is a
template and declare the variable as X<Zx = y. X<Zx(y) is fine.
Tested with gcc 2.95, 3.3, 4.1, all gave the same error:
t.cpp: In function 'int main()':
t.cpp:44: error: no matching function for call to
'D<int>::D(D<int>&)'
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by: Angus |
last post by:
Why moving a function from protected to public area in class causes
error C2556 - overloaded function differs only by return type
I have a protected function called GetState like this:
enum EState GetState(void) const throw();
If I move this function from protected: to public: I get this compile
error:
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by: trdmrk |
last post by:
Hello,
Ive found this site very helpful in the past, so i thought i may ask for help.
I am developing an application for a school project. I am in the middle of it, I get the error: java.lang.ExceptionInInitializerError
Caused by: java.lang.NullPointerException
at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:991)
at java.lang.Double.parseDouble(Double.java:510)
at...
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by: miss peaches |
last post by:
I am currently enrolled in a Java Programming Class in which we were asked to create a Class to store and retrieve an employee's name, hourly rate, and hours worked. Use constructors to initialize employee info and a method within the Class to calculate weekly pay. Once "Stop" is entered as employee name, the application should terminate. I have attached for you the code I wrote. Let me know if you need any additional info from me. Thanks for...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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