Differences between An ArrayList and a Vector

ArrayList and Vector are implemented in a very similar way. Their properties and methods are basically the same. If you look at the source code, they are basically the same, but with two important differences:

ArrayList is thread-safe. Vector is thread-safe. Vector uses synchronized methods to synchronize operations

②ArrayList is increased by 0.5 times each time, and Vector is doubled each time

That’s the main difference between the two

Differences between ArrayList and LinkedList

These are both linear tables, but there’s a big difference

ArrayList uses arrays to store data, while LinkedList uses linked lists to store data. The data structure used is different, so the corresponding characteristics are different

②LinkedList implements a dual-ended queue, which can be used for queue-related operations, whereas ArrayList cannot

These are also two important differences

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