He have understood how to run a Java program.
Why do we take a closer look at the program that we've written.
The hello world application consists of two primary components.
First the hello world class definition and the main method.
Public class hello world is the first line of our Java program.
Every Java application must have at least one class definition that consists of the class keyword followed
by the class name and the code for each class appears between the opening and closing.
Curly braces.
Now we will discuss the subject of classes in further detail and so in the upcoming lectures.
But right now it's just enough to know that every Java application begins with a class definition.
Public static void main String args or arguments.
So this is our next line in the program in the Java programming language.
Every application must contain a main method whose signature is well just like that.
Also will cover how to define a method in Java and the next upcoming lectures.
And then finally line system dot out dot print.
Hello world.
So the print method prints the contents inside the double quotes into the console and inserts a new
line after so it uses the system class from the core library of Java.
Now don't worry if you don't get it at first we're going to learn a whole lot more about classes and
methods in the next lectures.