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Java - create List with values initialized on creation
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In this article, we would like to show you how to create List with values initialized on creation in Java.
Quick solution:
List<Integer> numbers = Arrays.asList(1, 2, 3);
System.out.println(numbers); // [1, 2, 3]
Practical example
In this example, we use Arrays.asList()
method to add items to the list on its creation.
import java.util.Arrays;
import java.util.List;
public class Example {
public static void main(String[] args) {
List<Integer> numbers = Arrays.asList(1, 2, 3);
System.out.println("Numbers: " + numbers); // [1, 2, 3]
List<String> letters = Arrays.asList("A", "B", "C");
System.out.println("Letters: " + letters); // [A, B, C]
}
}
Output:
Numbers: [1, 2, 3]
Letters: [A, B, C]