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IT Nursery > News > main

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Is main a valid Java identifier?

One of my kids is taking Java in high school and had this on one of his tests: Which of the following is ...
  • May 18, 2022
  • 0 Comments

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 args) What is String ...
  • May 11, 2022
  • 0 Comments

Why is the Java main method static?

The method signature of a Java mainmethod is: public static void main(String...
  • May 2, 2022
  • 0 Comments

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 main() — ...
  • April 21, 2022
  • 0 Comments

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 it from the ...
  • April 14, 2022
  • 0 Comments

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 not find or ...
  • April 11, 2022
  • 0 Comments

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 it from the ...
  • April 8, 2022
  • 0 Comments

What is “String args[]”? parameter in main method Java

In Java args contains the supplied command-line arguments as an array of String objects. In other words, if you run your program as java MyProgram one two then args will contain ["one", "two"]. If ...
  • April 7, 2022
  • 0 Comments

What does if __name__ == “__main__”: do?

What does this do?   40   Short It’s boilerplate code that protects users from accidentally invoking the script when they didn’t intend ...
  • April 6, 2022
  • 0 Comments

Exception in thread “main” java.lang.ArithmeticException: / by zero

I have two questions about Exceptions. Firstly, I got this message from my code… Exception in thread "main" java.lang.ArithmeticException: / by zero This ...
  • April 5, 2022
  • 0 Comments

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