Removing an Element

Part of the Logic & Flow section of Coddy's Java journey — lesson 24 of 59.

The remove(element) method removes the specified element from the HashSet if it exists.

HashSet<String> fruits = new HashSet<>();
fruits.add("Apple");

Remove "Apple" from the set

fruits.remove("Apple");

After executing the above code, the set fruits contains:

[]

Challenge

Easy

Create a method named <strong>removeElement</strong> that takes two arguments:

A HashSet of Strings (set)
A String (element) to remove
The method should remove the specified element from the set and then print the updated set.

Cheat sheet

The remove(element) method removes the specified element from the HashSet if it exists:

HashSet<String> fruits = new HashSet<>();
fruits.add("Apple");
fruits.remove("Apple");

Try it yourself

import java.util.HashSet;
import java.util.Scanner;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import java.lang.reflect.Type;

public class Main {
    public static void removeElement(HashSet<String> set, String element) {
        // Write your code here
    }
    
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String setString = scanner.nextLine();
        String element = scanner.nextLine();
        
        Type setType = new TypeToken<HashSet<String>>(){}.getType();
        HashSet<String> set = new Gson().fromJson(setString, setType);
        
        removeElement(set, element);
    }
}