devxlogo

Making a Collection Read-Only

Why Trust Us

The Collections class provides static APIs to generate a read-only or unmodifiable collection, list, set, or map from the specified entity. For instance, if you are sure that the ArrayList you’ve made should not be modified, you can generate a read-only list from it by using the following code:

   ArrayList list = new ArrayList();  list.add(






Charlie has over a decade of experience in website administration and technology management. As the site admin, he oversees all technical aspects of running a high-traffic online platform, ensuring optimal performance, security, and user experience.
See also  Five Early Architecture Decisions That Quietly Get Expensive
Disclosure

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

Show More