What is the usage of the Vector class in Java?

2 years ago
Noah Thompson
1 minute

The Vector class in Java is a container class similar to ArrayList, but it is thread-safe. It implements a dynamic array that can adjust its capacity as needed. Common uses of the Vector class include:

  1. Create a Vector object: A Vector object can be created using a constructor method, for example:
Vector<String> vector = new Vector<>();
  1. Add elements: You can use the add() method to add elements to a Vector, for example:
vector.add("element1");
vector.add("element2");
  1. Accessing elements: You can retrieve elements from a Vector using the get() method, for example:
String element = vector.get(0);
  1. Remove elements: You can use the remove() method to delete elements from a Vector, for example:
vector.remove(1);
  1. Loop through elements: You can use a for loop or an iterator to iterate through the elements in a Vector, such as:
for(String element : vector) {
    System.out.println(element);
}

In general, the Vector class can be used to store and manage a group of elements, with the characteristic of being thread-safe, making it suitable for use in a multi-threaded environment. In a single-threaded environment, it is generally recommended to use the ArrayList class.

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