ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Java vs Python: Basic Program Structure

Updated on December 31, 2010

The Hello World program

The "hello world" program is one of the most common first programs taught in any language. Basically, you create a program that displays the phrase "hello world" after you execute the code. You can do this from command line or within the IDE.


The typical java program to print "hello world" to the console will have the following structure.*

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

There are a few rules.

The name of the program must be defined after the class keyword. In this case, we picked the name "myProgram" Therefore, the name of the java source file must be "".

Notice all the keywords - public, static, void, main, etc. Notice all the characters - semicolons, parentheses, brackets. They are all needed. In fact, this is a barebones program. For now, understand that the class section identifies this class. And the "public static void main" section tells the compiler where to enter the program. In more complex programs, this class will have more code inside and outside of this section. The "System.out.println("Hello World");" line tells the compiler to print the line "hello world". It's the only thing special about this program.


The Python program to print "Hello World" to the console is simpler:

print 'Hello World'

You can also write it as:

print "Hello World"

You may have noticed there is

- no need to specify the name of the program and have a filename to match

- no need to specify access modifiers (like public in Java)

- no need specify where the program should enter (like main in Java)

- no need for most punctuation (like semicolons and brackets in Java). Whitespace such as indentation and new lines are important in Python, however. Of course, if you were programming with good practices, you would be using whitespace similarly anyway.

- shorter commands ("print" basically does what "System.out.println" does)

Of course, this was a rather simplistic example. I will be posting more articles to my site - TechTedium. Cheers.

* If you are writing your own java programs, it's very helpful to use an IDE like Eclipse or IntelliJ. If you are writing your own python programs, you can usually get by with IDLE, the IDE that comes with Python. If you want more power, go for Eclipse or Wingware.


    0 of 8192 characters used
    Post Comment

    • profile image


      7 years ago

      Thanks for the detail on this one.


    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)