How to Initialize a List in Java
source link: https://www.geeksforgeeks.org/videos/how-to-initialize-a-list-in-java/
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How to Initialize a List in Java
- 18/08/2022
In this video, we will see how to initialize a List in Java.
The discussed methods are as follows:
1. Using .add() Method of List
2. Using .asList() Method.
3. Using collections
4. Using Stream
Method 1: In this method we can use, list.add() to add a single element to the list.
Method 2: In this method we can use, Arrays.asList() to create an immutable list of elements.
To make this list mutable, we have to pass the result of Arrays.asList() to new ArrayList instance.
Method 3: In this method we can use, ArrayList() to create a new list. We can add elements to this list using Collections.addAll() method and passing the list reference variable followed by the elements to enter.
We can also make this list Immutable, by using Collections.unmodifiable() method and passing the Array.asList() output in the parameters.
Method 4: In this method, we can use, java.utils.stream.Stream to create a list from a Stream.
Initializing a List in Java
https://www.geeksforgeeks.org/initializing-a-list-in-java/
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