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Why main() is declared public and static in java

Why is the main declared as public and static?

public static void main(String arg[])
{}

acording to ans in java 

"The method is static because otherwise there would be ambiguity: which constructor should be called?"
Solution

  • public - The main method is called by the JVM to run the method which is outside the scope of the project therefore the access specifier has to be public to permit a call from anywhere outside the application.

    static - When the JVM makes a call to the main method there is no object that exists for the class being called therefore it has to have static method to allow invocation from class.

    void - Java is a platform independent language, therefore if it returns some value, then the value may have a different meaning between different platforms so unlike C it can not assume a behavior of returning value to the operating system.