arrange words of a sentence in alphabetical order in java

1// java sort string characters alphabetically
2import java.util.Arrays;
3public class CharactersAlphabetically
4{
5   public static void main(String[] args)
6   {
7      String strInput = "flowerbrackets";
8      // converting string to char array
9      char[] ch = strInput.toCharArray();
10      // sorting char array
11      Arrays.sort(ch);
12      // converting char array to string
13      String strSorted = String.valueOf(ch);
14      System.out.println("sort string characters alphabetically: " + strSorted);
15   }
16}

1import java.util.Scanner;
2public class SortNamesAlphabeticalOrder
3{
4   public static void main(String[] args)
5   {
6      int number;
7      String str;
8      Scanner sc1 = new Scanner(System.in);
9      System.out.println("Please enter number of strings: ");
10      number = sc1.nextInt();
11      String[] names = new String[number];
12      Scanner sc2 = new Scanner(System.in);
13      System.out.println("Enter all strings: ");
14      for(int a = 0; a < number; a++)
15      {
16         names[a] = sc2.nextLine();
17      }
18      for(int a = 0; a < number; a++)
19      {
20         for(int b = a + 1; b < number; b++)
21         {
22            // java alphabetical sort
23            if(names[a].compareTo(names[b]) > 0)
24            {
25               str = names[a];
26               names[a] = names[b];
27               names[b] = str;
28            }
29         }
30      }
31      System.out.println("After sorting names in an alphabetical order: ");
32      for(int a = 0; a < number - 1; a++)
33      {
34         System.out.println(names[a] + ", ");
35      }
36      System.out.print(names[number - 1]);
37      sc1.close();
38      sc2.close();
39   }
40}

1// Arrange words of a sentence in alphabetical order in java
2import java.util.Set;
3import java.util.StringTokenizer;
4import java.util.TreeSet;
5public class ArrangeInAlphabeticalOrder 
6{
7   public static void main(String[] args) 
8   {
9      Set set = new TreeSet();
10      String strInput = "hi all welcome to flower brackets blog";
11      System.out.println("Before arranging sentence in alphabetical order: " + strInput);
12      StringTokenizer strToken = new StringTokenizer(strInput," ");
13      while(strToken.hasMoreElements())
14      {
15         set.add(strToken.nextElement());
16      }
17      System.out.println("After arranging sentence in alphabetical order: " + set);
18   }
19}