String Operation

String Operation Using collection Framework

Sorting Order

 public static void sortAccending(String s) {

char[] arr = s.toCharArray();

Arrays.sort(arr);

System.out.print(arr);

}

Sorting String Descending Order

public static void SortingDesendingOrder(String s) {

char[] arr = s.toCharArray();

Character[] a = new Character[arr.length];

for (int i = 0; i < a.length; i++)

a[i] = arr[i];

Arrays.sort(a, (o1, o2) -> { return -1;});

for (int i = 0; i < a.length; i++)

arr[i] = a[i];

System.out.print(arr);

}

RemoveDublicate Inside String 

public static void RemoveDublicate(String s) {

Set<Character> s1 = new HashSet<>();

for(int i=0; i<s.length(); i++)

s1.add(s.charAt(i));

String temp = "";

                for(char ch: s1) {

        temp = temp+ch+"";

                 }

                 System.out.println(temp);

}

Other Logic

    /* removeDublicate

     * LinkedHashSet<Charactor> s = new LinkedHashSet<Charactor>();

       int n = str.length();

       for(int i=0; i<n; i++)

           s.add(str.charAt(i));

        System.out.println(s);

        return str;

     */