I got this error using Maven, and I discovered the solution. Error: Could not find or load main class com.mycompany.testapifactory.Main I’m using java JDK version 1.7 on Linux, my pom.xml file was the default generated by Netbeans and I was using these commands to compile, which do work fine with a normal hello-world java application: … Read more
You cannot import the main package. Any shared code should go in a separate package, which can be imported by main (and other packages).
Per the SDL Windows FAQ: You should be using main() instead of WinMain() even though you are creating a Windows application, because SDL provides a version of WinMain() which performs some SDL initialization before calling your main code. If for some reason you need to use WinMain(), take a look at the SDL source code … Read more
I would break up public static void main(String args[]) in parts: public It means that you can call this method from outside of the class you are currently in. This is necessary because this method is being called by the Java runtime system which is not located in your current class. static When the JVM … Read more
As of Rust 1.26, main can return a Result: use std::fs::File; fn main() -> Result<(), std::io::Error> { let f = File::open(“bar.txt”)?; Ok(()) } The returned error code in this case is 1 in case of an error. With File::open(“bar.txt”).expect(“file not found”); instead, an error value of 101 is returned (at least on my machine). Also, … Read more
when you specify files on the command line, you have to specify all of them Here’s my run: $ ls main.go main_test.go $ go test *.go ok command-line-arguments 0.003s note, in my version, I ran with both main.go and main_test.go on the command line Also, your _test file is not quite right, you need your … Read more
The difference is one is the correct way to define main, and the other is not. And yes, it does matter. Either int main(int argc, char** argv) or int main() are the proper definition of your main per the C++ spec. void main(int argc, char** argv) is not and was, IIRC, a perversity that came … Read more
It’s because C allows for “non-hosted” or freestanding environment which doesn’t require the main function. This means that the name main is freed for other uses. This is why the language as such allows for such declarations. Most compilers are designed to support both (the difference is mostly how linking is done) and therefore they … Read more
They are compiler magic, and implementation-dependent.
In C++, there is no difference. In C, the difference is questionable. Some love to argue that the latter version (the one without void) is technically just a common implementation extension and not guaranteed to work by the standard because of the wording in the standard. However, the standard clearly states that in a function … Read more