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becoz the main program doesnot return any value to the os.

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16y ago

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What is psvm in java?

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What is a main function in java?

the main function or main method is the first method that gets invoked when you try to run a java application. Any class that has a main method can be executed in a standalone fashion. A typical main method would look like below: public static void main(String[] args) { … // code goes here }


Why should the java main method has the return type as void?

A void method is one that returns no value. The Java main() method is the first method to be called, therefore it doesn't need to return a value to another Java method, therefore it is declared as void. If something needs to be returned to the operating system, this is done differently, not by "returning a value" in the sense of Java.


Can return statement be in a void method in java?

the main method in java is the client code therefore doesn't return any values Unlike languages like C/C++, the user doesn't specify an error return code by returning from the main method. Instead they should use System.exit(code) to do this. If the Java main method returns, the default code of zero is returned.


What is the difference between main function in C java?

// C int main(int argc, char** argv) { return 0; } // Java class MainClass { public static void main(String[] args) { } } Differences: * Java main method must be in a class; C has no class, so no such requirement exists. * Both accept an array of command-line args. * ** Java arrays know how long they are; C does not and thus the main function must have an additional parameter to know the length of the array. * The Java main method has a specific format; the C main function seems to be allowed to differ. * ** The C main function seems to be able to accept different numbers of arguments and have different return types (assuming the implementation allows it).


Can you overwrite main function in java?

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What is the function of void main in c language?

Actually, it is:int main (void)orint main (int, char **)the point where the execution of the program begins