Can we execute a class without a 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.

What if we execute method without main?

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.

Can we print execute something without using main method?

Yes, you can print a message to console without using main().

Can a program run without main () in Java?

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 print hello without main method?

Can You write the code to print hello world without main method? Yes if you are using java version 1.6, but from java 1.7 it will not support it will through an error.

can we execute a java program without main method

Is main method compulsory in Java?

To compile a program, you doesn't really need a main method in your program. But, while execution JVM searches for the main method. In the Java the main method is the entry point Whenever you execute a program in Java JVM searches for the main method and starts executing from it.

Can we execute program without main in C?

So actually C program can never run without a main() . We are just disguising the main() with the preprocessor, but actually there exists a hidden main function in the program.

Can we run spring boot without main method?

You don't need the main method, all you need is to do is to extend SpringBootServletInitializer as Kryger mentioned. @SpringBootApplication public class Application extends SpringBootServletInitializer { @Override protected SpringApplicationBuilder configure(SpringApplicationBuilder application) { return application.

Can we override the main method?

Overriding main method

You cannot override static methods and since the public static void main() method is static we cannot override it.

Why main method is 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.

Can we overload the main method?

Yes, main method can be overloaded. Overloaded main method has to be called from inside the "public static void main(String args[])" as this is the entry point when the class is launched by the JVM. Also overloaded main method can have any qualifier as a normal method have.

Is main function mandatory in C?

No, the ISO C standard states that a main function is only required for a hosted environment (such as one with an underlying OS). For a freestanding environment like an embedded system (or an operating system itself), it's implementation defined.

Can we compile a program without main () function justify your answer?

yes it is possible to write a program without main(). But it uses main() indirectly. The '##' operator is called the token pasting or token merging operator. That is we can merge two or more characters with it.

Why main function is special in C++?

C++ program is a collection of functions. Every C++ program must have a main function. The main() function is the starting point where all C++ programs begin their execution. Therefore, the executable statements should be inside the main() function.

Do all classes need a main method?

It is not necessary for all the classes to have a main method. main method is used as an entry point for java applications. So once you have entered the java code using main method of a single class you can call other classes code form there.

Do all Java classes need a main?

Not all Java applications require a main method. Java can also be used to create web applications, for instance, which don't require main methods to run. The answer to your question depends on what exactly you mean.

Should a main () method be compulsorily declared in all Java classes?

No, it is not required to have a main() method in every class; but for you to be able to access the class you need to call it from another class which has a main method and is in the same package as the class you need to use.

Does C++ need a main?

Yes, the C++ language requires that main be defined.

Why is the main () function so important?

Answer: The main function is special because it is entry point for program execution. It plays the role of door in a house. Consider you want to enter house to perform various daily activities (functions) like sleep, cook, clean, watch T.V etc.

What is the purpose of main () function?

The main function can in-turn call other functions. When main calls a function, it passes the execution control to that function. The function returns control to main when a return statement is executed or when end of function is reached.

Can we declare main method as private?

Yes, we can declare the main method as private in Java. It compiles successfully without any errors but at the runtime, it says that the main method is not public.

Can we have 2 main methods in Java?

From the above program, we can say that Java can have multiple main methods but with the concept of overloading. There should be only one main method with parameter as string[ ] arg.

Can we declare constructor as final?

No, a constructor can't be made final. A final method cannot be overridden by any subclasses. As mentioned previously, the final modifier prevents a method from being modified in a subclass. The main intention of making a method final would be that the content of the method should not be changed by any outsider.

Can we declare main () method as non static?

You can write the main method in your program without the static modifier, the program gets compiled without compilation errors. But, at the time of execution JVM does not consider this new method (without static) as the entry point of the program.

Can we remove static from main method?

1 Answer. If you don't add the 'static' modifier in your main method definition, the compilation of the program will go through without any issues but when you'll try to execute it, a "NoSuchMethodError" error will be thrown.