Web Reference: From Java 10, you can use the var keyword to declare an ArrayList variable without writing the type twice. The compiler figures out the type from the value you assign. Mar 17, 2026 · ArrayList in Java is a resizable array provided in the java.util package. Unlike normal arrays, its size can grow or shrink dynamically as elements are added or removed. Dec 14, 2024 · In this quick article, we had a look at the ArrayList in Java. We showed how to create an ArrayList instance, and how to add, find, or remove elements using different approaches.
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