HashSet contains(Object o) method in java
import java.util.HashSet;
public class HashSetContainsObjectMethodExample
{
public static void main(String[] args)
{
HashSet<String> hs = new HashSet<String>();
hs.add("hello");
hs.add("world");
hs.add("java");
// check if element exists
boolean bool = hs.contains("world");
System.out.println("Is element 'world' exists: " + bool);
}
}hashset contains java
HashSet<Integer> set = new HashSet<Integer>();
set.contains(110)//public boolean contains(Object o)hashset in java
- HashSet can have null, order is not guaranteedCopyright © 2021 Codeinu
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