Create a fresh new java class file in the src/ directory with .java extension. Don't worry we'll explain this in detail later and start writing the following code in it.

    // Create a hello world program

    public class HelloWorld {
        public static void main(String[] args) {
            System.out.println("Hello World!");
        }
    }

OKay so lots of horrible looking code, but it's not that bad, we'll get it line by line.

• The first line is the class declaration. It tells the compiler what the class is called and what it does (in this case it's a HelloWorld class).
• The 2nd line is the main method. This is where the program starts. public is the access modifier, static is the modifier, void is the return type, main is the method name, and (String[]) is the parameter list. The parameter list is a list of strings, which are the arguments passed to the program. This is basically the terminology.
• The 3rd line is the System.out.println statement. This is a method call. System is the class, out is the object, . is the dot operator, println is the method name, and inside the parentheses we pass the string Hello World!.