Java Collection, HashSet Exercises: Get the number of elements in a hash set
Java Collection, HashSet Exercises: Exercise-3 with Solution
Write a Java program to get the number of elements in a hash set.
Sample Solution:
Java Code:
import java.util.*;
import java.util.Iterator;
public class Exercise3 {
public static void main(String[] args) {
// Create a empty hash set
HashSet<String> h_set = new HashSet<String>();
// use add() method to add values in the hash set
h_set.add("Red");
h_set.add("Green");
h_set.add("Black");
h_set.add("White");
h_set.add("Pink");
h_set.add("Yellow");
System.out.println("Original Hash Set: " + h_set);
System.out.println("Size of the Hash Set: " + h_set.size());
}
}
Sample Output:
Original Hash Set: [Red, White, Pink, Yellow, Black, Green] Size of the Hash Set: 6
Pictorial Presentation:
Flowchart:
Java Code Editor:
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