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Initialize a Set without using add() method in Java
With Java, you can initialize a set without using add() method.
For this create a string array −
String arr[] = { "A", "B", "C", "D", "E"};Now, use Set and asList() method to initialize the above string array to our Set −
Set s = new HashSet(Arrays.asList(arr));
The following is an example to initialize a set without using add() method −
Example
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
public class Demo {
public static void main(String[] a) {
String arr[] = { "A", "B", "C", "D", "E"};
Set s = new HashSet(Arrays.asList(arr));
System.out.println(s);
}
}Output
[A, B, C, D, E]
Updated on: 30-Jul-2019
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