How to Create a Fixed-Size List of 100 Elements in Java?

How can I create a fixed-size list in Java, specifically one that contains 100 elements?

List<String> fixedSizeList = Arrays.asList(new String[100]);

In Java, while there is no built-in fixed-size list implementation, you can achieve a fixed-size list using the `Arrays.asList()` method. This method allows you to create a fixed-size list backed by an array, which makes it immutable in terms of size.

List<String> fixedSizeList = Arrays.asList(new String[100]); // Initializes a list of size 100 with null values.

Causes

• Java collections are typically resizable (e.g., ArrayList), which makes true fixed-size lists not directly available.
• The design of Java's Collections Framework emphasizes flexibility and dynamic sizing.

Solutions

• Use `Arrays.asList()` to create a fixed-size list from an array.
• To ensure the list behaves as if it were fixed-size, avoid adding or removing elements after creation.

Mistake: Attempting to add elements to the fixed-size list after initialization.

Solution: Remember that lists created with `Arrays.asList()` cannot change their size. Modifying the list (e.g., adding or removing elements) will throw an `UnsupportedOperationException`.

Mistake: Confusing `Arrays.asList()` with ArrayList creation.

Solution: Understand that while both can create lists, only `Arrays.asList()` results in a fixed-size list.