The Anatomy of a Java Application

Comparison of DateApp and "Hello World"

This page provides a comparison between the DateApp application and The "Hello World" Application . If you are not familiar with the "Hello World" application or are not interested in how these two programs differ, just skip this page and go on to the next.

The bold lines in the two program listings below highlight where the programs differ from one another. Specifically,

• DateApp imports the Date class
• the applications have different names: DateApp vs. HelloWorldApp
• DateApp creates a Date object
• the applications print different output

The DateApp Application

import java.util.Date;
class DateApp {
    public static void main (String args[]) {
        Date today = new Date();
        System.out.println(today);
    }
}

The "Hello World" Application

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

The Anatomy of a Java Application