Top "Main" questions

In many programming languages, the main function, subroutine, or method marks the entry point of the program.

What does if __name__ == "__main__": do?

Given the following code, what does the if __name__ == "__main__": do? # Threading example import time, thread def myfunction(string, sleeptime, …

python namespaces main python-module idioms
What does "Could not find or load main class" mean?

A common problem that new Java developers experience is that their programs fail to run with the error message: Could …

java class main
Can't execute jar- file: "no main manifest attribute"

I have installed an application, when I try to run it (it's an executable jar) nothing happens. When I run …

java jar manifest main
What is "String args[]"? parameter in main method Java

I'm just beginning to write programs in Java. What does the following Java code mean? public static void main(String[] …

java parameters command-line-arguments main
Why is the Java main method static?

The method signature of a Java main() method is: public static void main(String[] args){ ... } Is there a reason for …

java static main
Explanation of 'String args[]' and static in 'public static void main(String[] args)'

How can you explain very well, to a beginner, the meaning of String args[] and the use of static in …

java main
What should main() return in C and C++?

What is the correct (most efficient) way to define the main() function in C and C++ — int main() or void …

c++ c return-value main return-type
calling another method from the main method in java

I have class foo{ public static void main(String[] args){ do(); } public void do(){} } but then when I call do() …

java methods static-methods main
C++ Fatal Error LNK1120: 1 unresolved externals

What is causing this error? I google'd it and first few solutions I found were that something was wrong with …

c++ visual-studio-2010 main fatal-error
"Error: Main method not found in class MyClass, please define the main method as..."

New Java programmers often encounter these messages when they attempt to run a Java program. Error: Main method not found …

java runtime-error main nosuchmethoderror