What will happen if main method is not declared static?

If the main method were not declared static then JVM has to create an instance of the main Class and since the constructor can be overloaded and can have arguments there would not be any certain and consistent way for JVM to find the main method in Java.

What if there is no main method?

If your program doesn’t contain the main method, then you will get an error “main method not found in the class”. It will give an error (byte code verification error because in it’s byte code, main is not there) not an exception because the program has not run yet.

What happens if main method is declared as final?

Yes, we can declare the main () method as final in Java. The compiler does not throw any error. If we declare any method as final by placing the final keyword then that method becomes the final method. The main use of the final method in Java is they are not overridden.

Why the main method is not called without using an object?

Main() is declared as static as it is directly call by the JVM without creating an object of the class in which the it is declared. When java runtime starts,there is no object of class present. Thats why main method has to be static,so JVM can load the class into memory and call the main method.

Why main method is static can we execute a program without main () method if yes how?

Can we execute a java program without a main() method? [duplicate] Closed 8 years ago. According to my knowledge we cannot execute without a main method because when your running the java program. java Virtual machine look for the main method .

Why main method is void?

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.

What’s the argument of the main method?

The Argument of String Array in Main Method The argument is the instance which is passed to the method while run time is taking place. If value is passed during run time, it will be populated in “String args []” in the form of an argument. If you do not pass anything it will be empty.

Why servlet does not have main method?

In web application we don’t need to use main() method in servlet, because the servlet container will be invoked as per the life cycle systems. so the main() method wouldn’t be loaded at the invokation of the servlet container.

What is the argument of the main method?

Other arguments for the main method Since the main method is the entry point of the Java program, whenever you execute one the JVM searches for the main method, which is public, static, with return type void, and a String array as an argument. If anything is missing the JVM raises an error.

Can we have a class without main method?

Yes, we can execute a java program without a main method by using a static block. Static block in Java is a group of statements that gets executed only once when the class is loaded into the memory by Java ClassLoader, It is also known as a static initialization block.

Can we execute a class without a main method?

Yes You can compile and execute without main method By using static block.

Why static methods Cannot be overridden?

Static methods cannot be overridden because they are not dispatched on the object instance at runtime. The compiler decides which method gets called. Static methods can be overloaded (meaning that you can have the same method name for several methods as long as they have different parameter types).

Why the main() method in Java is always static?

Why the main () method in Java is always static? Java main () method is always static, so that compiler can call it without the creation of an object or before the creation of an object of the class. In any Java program, the main () method is the starting point from where compiler starts program execution.

How do you call the main method without creating an object?

static: You can make a method static by using the keyword static. We should call the main () method without creating an object. Static methods are the method which invokes without creating the objects, so we do not need any object to call the main () method. void: In Java, every method has the return type.

Can a class not have a main method in Java?

It’s entirely valid for a class not to have a main method – or for it to have a main method which isn’t declared as public static void main (String [] args). However, in order to treat a class as the entry point for a Java application, it needs that method, with that signature (although the parameter name can vary).

What are static and void methods in Java?

Static methods are the method which invokes without creating the objects, so we do not need any object to call the main () method. void: In Java, every method has the return type.