File: Simple.java
1. class Simple{
2. public static void main(String args[]){
3. System.out.println("Hello World");
4. }
5.
}
what is the meaning of class, public,
static, void, main, String[], System.out.println().
- class is a keyword which is
used to declare a class.
- public keyword is
an access modifier that represents visibility. It means it is visible to
all.
- static is a
keyword. If we declare any method as static, it is known as the static
method. The core advantage of the static method is that there is no need
to create an object to invoke the static method.So it saves the memory.
- void is the
return type of the method. It means it doesn't return any value.
- main represents
the starting point of the program.
- String[] args is used
for command line argument.
- System.out.println() : It is used to print statement. Here, System is a class, out is the object of PrintStream class, println() is the method of PrintStream class. For more details to click here System.out.println()