Difference Between Arraylist And Vector In Java
distinguishing features of ArrayList and Vector in Java
Difference Between Arraylist And Vector In Java
In Java, both ArrayList and Vector are dynamic arrays that can resize themselves automatically to accommodate elements. The primary difference lies in their synchronization and performance characteristics. ArrayList is not synchronized by default, which means it is not thread-safe but performs better in single-threaded scenarios. On the other hand, Vector is synchronized, making it thread-safe but potentially slower in a multi-threaded environment due to the overhead of synchronization. Additionally, Vector is considered a legacy class and is not recommended for new development, while ArrayList is the preferred choice for most scenarios.
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1 - ArrayList and Vector are both classes in Java that can be used to store and manipulate a list of elements.
2) The main difference between ArrayList and Vector is that ArrayList is not synchronized, while Vector is synchronized.
3) Synchronization in Vector means that it is thread safe, but this can decrease performance as only one thread can access the Vector at a time.
4) ArrayList, being unsynchronized, is not thread safe, but this can result in better performance for single threaded applications.
5) Another difference is that Vector is a legacy class that has been part of Java since version 1.0, while ArrayList was introduced in Java 1.2 as part of the Java Collections Framework.
6) ArrayList is more commonly used in modern Java programming due to its better performance in most cases and because synchronization can be implemented manually if needed.
7) ArrayList allows for dynamic resizing of the underlying array, while Vector increments its underlying array by a fixed amount when it needs to grow.
8) When deciding between ArrayList and Vector, consider the requirements of your application if thread safety is not a concern and better performance is desired, ArrayList is likely the better choice.
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