Can’t execute jar- file: “no main manifest attribute”
Can’t execute jar- file: “no main manifest attribute”
main
What should main() return in C and C++?
The return value for main indicates how the program exited. Normal exit is represented by a 0 return value from main. Abnormal exit is signaled by a non-zero return, but there is no standard for how non-zero codes are interpreted. As noted by others, void main() is prohibited by the C++ standard and should not … Read more
“Error: Main method not found in class nissan.lakshmi, please define the main method as:public static void main(String[] args) [duplicate]
The problem is that Java is searching for the method: public static void main(String[] args) and you only have: public static void main() { tc1(); } Which is not the same. So you need to add the parameter String[] args. This parameter is a list of all the parameters that were passed in when the … Read more
Why Java Only Allows String[] args as Main method Argument? [duplicate]
This is how you would run a java program in a command line: java YourMainClass The command line arguments comes after that: java YourMainClass arg1 arg2 arg3 This would make the args string array contain “arg1”, “arg2” and “arg3”. If you make the args array an int[], how on earth is arg1 going to be … Read more
Does BlueJ not require a main() method? [closed]
BlueJ is a development environment which is a deliberately smaller and simpler interface than professional environments like NetBeans or Eclipse. This allows beginners to get started more quickly and hence doesnt force you to write the main() instead it does it for you in the background https://www.cs.utexas.edu/users/scottm/cs307/handouts/BlueJProjectInstructions.html Where as Netbeans and Eclipse mandate that you … Read more
What does if __name__ == "__main__": do?
Short Answer It’s boilerplate code that protects users from accidentally invoking the script when they didn’t intend to. Here are some common problems when the guard is omitted from a script: If you import the guardless script in another script (e.g. import my_script_without_a_name_eq_main_guard), then the second script will trigger the first to run at import … Read more