HelloWorld.java is a sample program which contains main
method.
To Compile: javac HelloWorld.java
To Execute: java HelloWorld
Lets see what is meaning of public static and void keyword in main() declaration
·
public:
The main method is called by JVM when we execute “Java HelloWorld”. But since
the JVM is out of scope of main method of the class HelloWorld. to make it
accessible by JVM, so main method is public
in java.
·
static:
static keyword allows us to access members without creating object of that
class with the help of class name. When JVM calls main method, it does not have
any instance of the class having main method. JVM calls main method internally
using class name like HelloWorld.main().So main method is static in java.
· void:
when any method does not returns any value its return type must be void. As
main method does not return any value, so main method is void in java.
