They are public because they must be accessible to the JVM to begin execution of the program. Main is the first method that would get executed in any class.
They are static because they must be available for execution without an object instance. you may know that you need an object instance to invoke any method. So you cannot begin execution of a class without its object if the main method was not static.
Or
Main is starting point of the program execution Main method is called by JVM there is no need for JVM to
create an object of the class just to access Main function
The main method always has to be public, or else it will never run. If you mark the method as private and you try to run the application, the class loader won't even be able to see the method, and won't get called. The main method needs to be static so your class does not need to be instantiated in order to run. When you run your application, the JVM can not create an instance of the class. That can only be done once the main method is called. Methods of classes that can be called without the class being instantiated are static.
in java programming langauge the main function is declear as static and public because in oops(object oriented programming) every public function is accessable any where in our source code , but the matter of static is different from this in a class every static function is called without object so we do not declear a object for our class in our code
Java's main function denotes the entry point into the execution of your program.
The two are different, and independent from one another. A variable can be public, static, both public and static, or neither.
public static void main
You can not overwrite a static method in Java,and 'main' is a static method.so,you can't overwrite the 'main'.
-Public to all - Static to access with Class Name - Final to change( constant and not alowed to change) Just use it along with class name. (As implied above, a 'public static final' variable in Java is what other languages would call a Constant. )
Java's main function denotes the entry point into the execution of your program.
The two are different, and independent from one another. A variable can be public, static, both public and static, or neither.
public static void main
You can not overwrite a static method in Java,and 'main' is a static method.so,you can't overwrite the 'main'.
The main function is public because it means it needs to be called by any object. I had to check this myself but if you try to make the main function in Java private it will give you a run time error. It is static because it is indicating it is a class method and it does not need to be instantiated. Without the static keyword you would need to do something like this Main main = new Main();
-Public to all - Static to access with Class Name - Final to change( constant and not alowed to change) Just use it along with class name. (As implied above, a 'public static final' variable in Java is what other languages would call a Constant. )
A function is a piece of code that can be reused by calling its name while a method is a function that is associated with a class. In Java, functions are usually referred to as static methods.
The main function. Every program must have a main function and it must be declared static.
class Demo { public static void main(String s[]) { System.out.println("hello java frm Demo"); } } class Demo1 { public static void main(String s[]) { System.out.println("hello java frm Demo1"); String z={" "}; Demo.main(); } }
Static membors partispating in Overwriting in java?
public class Hello{public static void main(String [] args){System.out.println("Hello");}}
public class Hello { public static void main (String args[]) { System.out.println("Hello World"); } }