The Main() method is
the entry point a C# program from where the execution starts
. Main() method must be static because it is a class level method. To invoked without any instance of the class it must be static. Non-static Main() method will give a compile-time error.
What is the use of main method in Java?
main: It is the name of Java main method. It is
the identifier that the JVM looks for as the starting point of the java program
. It’s not a keyword. String[] args: It stores Java command line arguments and is an array of type java.
What is the argument of 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.
How main method is called?
main is a
static method
, the entry point for the program, and is called once (unless you explicitly call it), when the program starts, not for each object initialization.
What is true about main method in Java?
The main method in Java is
public so that it’s visible to every other class
, even which are not part of its package. if it’s not public JVM classes might not able to access it. 2. The main method is static in Java so that it can be called without creating any instance.
Can we have 2 main methods in Java?
A class can define multiple methods with the name main. The signature of these methods does not match the signature of the main method. These other methods with different signatures are not considered the “main” method.
Yes it is possible to have two main()
in the same program.
Why the main method is 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. So, the compiler needs to call the main() method.
What does string [] args mean?
String[] args means
an array of sequence of characters (Strings) that are passed to the “main” function
. This happens when a program is executed. Example when you execute a Java program via the command line: java MyProgram This is just a test. Therefore, the array will store: [“This”, “is”, “just”, “a”, “test”]
Can we make main method as final?
yes it works!
we cannot declare the main method as final
. if it is parent class. Output: Cannot override the final method from Parent . But you can declare the final method in child class main method.
Can we override static method?
Can we override a static method?
No, we cannot override static methods
because method overriding is based on dynamic binding at runtime and the static methods are bonded using static binding at compile time.
What type of method is the main method?
The Main() method is the
entry point a C# program
from where the execution starts. Main() method must be static because it is a class level method. To invoked without any instance of the class it must be static. Non-static Main() method will give a compile-time error.
Where does the main method go?
When the program starts, the operating system calls main . The main method is
the starting point for the program
, since the execution begins from its first line. The execution of a program ends at the end of the main method.
Can we create a program without main method?
Yes You can compile and execute without main method By using static block
. But after static block executed (printed) you will get an error saying no main method found.
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.
What happens if I remove static from main method?
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.
What happens if we write main () inside main () method?
The process of calling a function by the function itself is known as Recursion. Well,you can call a main() within the main() function ,but you should have a condition that does not call the main() function to terminate the program. Otherwise,the program will never return and run infinitely.
