Java Program to remove duplicate char from String,

package RemoveDuplicaeCharFromSttring;

import java.util.LinkedHashSet;
import java.util.Set;

public class RemoveDuplicateCharFromString {
        public static String removeDuplicateCharsFromSring(String inputSring) {
            if (inputSring == null || inputSring.isEmpty()) {
                return inputSring;
            }
            // A LinkedHashSet stores unique characters and maintains insertion order.
            Set<Character> seen = new LinkedHashSet<>();
            // Use a StringBuilder for efficient string building.
            StringBuilder result = new StringBuilder();
            // Iterate through the input string
            for (char ch : inputSring.toCharArray()) {
                // If the character is not already in the set, add it to both the set and the result string
                if (seen.add(ch)) {
                    result.append(ch);
                }
            }
            // Convert the StringBuilder to a String and return
            return result.toString();
        }
        public static void main(String[] args) {
            String input1 = "programming";
            String output1 = removeDuplicateCharsFromSring(input1);
            System.out.println("Original String: " + input1);
            System.out.println("After removing dulicate chars: " + output1);
        }
    }