We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Are Static Variables?

By Jessica Susan Reuter
Updated May 16, 2024
Our promise to you
EasyTechJunkie is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At EasyTechJunkie, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Static variables, also called global variables, are pieces of data that are not affiliated with a particular instance of a class. Only one value for these variables can exist regardless of the number of class objects that are created. Depending on the context, static variables can be either more flexible or more restrictive than their instance variable counterparts, which have their own discrete values for every specific object of a class type. In object oriented programming languages, good programming practice usually dictates that the use of static objects, methods, or variables be kept to a minimum, but they do have useful applications.

One major reason that static variables are considered restrictive at times is because no more than one value can ever exist for a variable. Any assignment to the variable overwrites the previous one, and any information in the previous value is lost. Without multiple copies of the variable, multiple data values cannot be stored. If the value is changed, every object that it affects must function with the new value, and if the old value was not meant to be deleted, the change could prove detrimental to every instance object of a particular class type. Unless the variable is somehow locked at creation, the risk of unanticipated change and the subsequent havoc it could wreak on objects causes some programmers to avoid static variables whenever possible.

Static variables can sometimes be considered flexible for the same reason they may be called restrictive. Even if a variable's value isn't locked, planned changes to its value can have positive effects. A variable that is shared among all objects of a class is guaranteed to be consistent and can be used both inside and outside the class with confidence that its value is always the same. Variables that are static have a variety of useful applications, most notably in maintenance of constants and implementation of serialization. Java in particular relies heavily on this static serialization mechanism.

There are certain general rules which programmers often use while implementing static variables. These variables usually work best as small data values because large static objects can make a program far more rigid than it has to be. Small data values can be quickly and easily changed without too much fear of introducing errors. Large static objects take more time and effort to change and are also more prone to having an error introduced that would disrupt all class objects. These are guidelines, not unbreakable rules, and there may be uses for both small and large variables, depending on the program.

EasyTechJunkie is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.

EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.