Remove Duplicates from String using ForLoop

import java.util.*;

//Creating RemoveDuplicatesExample1 class
public class RemoveDuplicatesExample1
{
    //Creating removeDuplicates() method to remove duplicates from array
    static void removeDuplicate(char str[], int length)
    {
        //Creating index variable to use it as index in the modified string
        int index = 0;

        // Traversing character array
        for (int i = 0; i < length; i++) {

            // Check whether str[i] is present before or not
            int j;
            for (j = 0; j < i; j++) {
                if (str[i] == str[j]) {
                    break;
                }
            }

            // If the character is not present before, add it to resulting string
            if (j == i) {
                str[index++] = str[i];
            }
        }
        System.out.println(String.valueOf(Arrays.copyOf(str, index)));
    }

    // main() method starts
    public static void main(String[] args) {
        String info = "javaTpoint is the best learning website";
        //Converting string to character array
        char str[] = info.toCharArray();
        //Calculating length of the character array
        int len = str.length;
        //Calling removeDuplicates() method to remove duplicate characters
        removeDuplicate(str, len);
    }
}