Why we use void in main function in java?

Java main method doesn’t return anything, that’s why it’s return type is void . This has been done to keep things simple because once the main method is finished executing, java program terminates. So there is no point in returning anything, there is nothing that can be done for the returned object by JVM.

Why is Main int and not void?

The short answer, is because the C++ standard requires main() to return int . As you probably know, the return value from the main() function is used by the runtime library as the exit code for the process. Both Unix and Win32 support the concept of a (small) integer returned from a process after it has finished.

Can we use int instead of void in main function in java?

I answered: No. The compiler won’t compile it as it is expecting the return type of main to be int , though we can overload it.

Why is main function not void?

Unlike all other functions in a C++ program, main does not need to explicitly return a value. When main does not exit as a result of a return statement, it is specified to return 0 . This int return value is often, but not always used to signal a program’s exit status to the operating system.

Can main method be int if no why?

Can main method be int? If no, why? Java does not return int implicitly, even if we declare return type of main as int.

What is the difference between void void and int void methods?

void methods do not return anything – they simply perform an action. int methods on the other hand, as the name suggests, return an integer value. As a note, it is convention to start method names with a lower-case letter. first one doesn’t return anyhting you may use this if you want to say just print the added values.

What is the difference between public void and static void in Java?

1 Public: It is an Access modifier, which specifies from where and who can access the method. 2 Static: It is a keyword which is when associated with a method, makes it a class related method. 3 Void: It is a keyword and used to specify that a method doesn’t return anything. 4 main: It is the name of Java main method.

Why do we need int main and not void main in C++?

Why do we need to use int main and not void main in C++? The short answer, is because the C++ standard requires main () to return int. As you probably know, the return value from the main () function is used by the runtime library as the exit code for the process.

What is the purpose of the method type void sum() in Java?

void methods do not return anything – they simply perform an action. While int, double, boolean, String methods return integer, double, String value. The first method type void sum() just perform an action call a method println() and the purpose of this method is to print a String value.