Write a Java program to Create a HashSet with string items
The program starts with the import statement import java.util.*;, which imports all classes from the java.util package, including HashSet.
- The program defines a public class called Create_Hashset. Within the Create_Hashset class, the main method is declared and serves as the entry point for the program. It takes an array of strings (args) as input.
- Inside the main method, a new instance of the HashSet class is created using the constructor: HashSet<String> fr = new HashSet<String>();. The specifies the type of elements that will be stored in the HashSet, which in this case is a string.
- After that, several elements are added to the HashSet fr using the add() method. The elements added are "Mulberry", "Banana", "Mango", "Watermelon", "Apple", "Guava", and "Pineapple".
- Finally, the program prints the contents of the fr HashSet using the System.out.println() statement.
Source Code
import java.util.*;
public class Create_Hashset
{
public static void main(String[] args)
{
HashSet<String> fr = new HashSet<String>();
fr.add("Mulberry");
fr.add("Banana");
fr.add("Mango");
fr.add("Watermelon");
fr.add("Apple");
fr.add("Guava");
fr.add("Pineapple ");
System.out.println("Create a HashSet with string items : ");
System.out.println(fr);
}
}
Output
Create a HashSet with string items :
[Mulberry, Guava, Apple, Watermelon, Pineapple , Mango, Banana]