Size() Method return number of element in the HashSet.
import java.util.HashSet;
import java.util.Set;
public class CountElement {
public static void main(String[] args) {
Set<String> hs = new HashSet<String>();
hs.add("java");
hs.add("php");
hs.add("html");
hs.add("javascript");
hs.add("mysql");
//print hashset
System.out.println("hashset = "+hs);
/*
* Returns the number of elements in set. If this set contains more than
* Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.
*/
System.out.println("Size of hashset = "+hs.size());
}
}
Output:
hashset = [javascript, php, html, java, mysql]
Size of hashset = 5
import java.util.HashSet;
import java.util.Set;
public class CountElement {
public static void main(String[] args) {
Set<String> hs = new HashSet<String>();
hs.add("java");
hs.add("php");
hs.add("html");
hs.add("javascript");
hs.add("mysql");
//print hashset
System.out.println("hashset = "+hs);
/*
* Returns the number of elements in set. If this set contains more than
* Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.
*/
System.out.println("Size of hashset = "+hs.size());
}
}
Output:
hashset = [javascript, php, html, java, mysql]
Size of hashset = 5
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