1    ///*
2    //* A program to perform some basic operations on a list of string names.
3    //*/
4    
5    package arraylists;
6    
7    import java.util.ArrayList;
8    import java.util.List;
9    //
10   public class ArrayListProcessing {
11   
12   
13       //
14       public static void main(String[] args) {
15   //
16   //        // Point A: Add some strings which represent names to an ArrayList.
17           List<String> names = new ArrayList<>();
18           names.add("Holiday, Billie");
19           names.add("Claudel, Camille");
20           names.add("Picasso, Pablo");
21           names.add("Gallen-Kallela, Akseli");
22           names.add("Zotto, Osvaldo");
23   
24           names.add("Rock, Johnson");
25           names.add("McCoy, James");
26           names.add("Gates, Bill");
27   
28           // POINT B:
29   //        Create an ArrayList of just the first names of the names
30   //        ArrayList. Use a For loop to print out the names, separated by spaces.
31   
32           List <String> firstNamesList = firstNames(names);
33   
34           System.out.println("First names: ");
35           for ( String firstName : firstNamesList ) {
36               System.out.println(firstName + " ");
37           }
38           System.out.println();
39   
40   
41           // POINT C: Use String's join function to create and print a String of just the first names of the names ArrayList with each name
42           // separated by a comma.
43   
44           String firstNames = String.join(", ", firstNamesList);
45   
46           System.out.println("First names: " + firstNames);
47   
48           // POINT D: By analogy from Points B and C, print a comma-separated list of the last names in the names ArrayList.
49   
50           // LAST NAME
51           System.out.println();
52   
53           List <String> lastNamesList = lastNames(names);
54           System.out.print("Last names: ");
55   
56           String lastNames = String.join(", ", lastNamesList);
57           System.out.println(lastNames);
58   
59           System.out.println();
60   
61   //
62   
63           // POINT E: Print a comma-separated list of all uppercase first names from the list of the last names in the names ArrayList.
64           List<String> upperCaseFirstNamesList = upperCaseNames(firstNames(names));
65           String upperCaseFirstNames = String.join(", ", upperCaseFirstNamesList);
66   
67           System.out.println("Uppercase first names: " + upperCaseFirstNames);
68   
69           // POINT F: Print a comma-separated list of all hyphenated last names from the list of names in the names ArrayList.
70   
71           List <String> hyphenatedNames = hyphenatedNames(names);
72           List <String> hyphenatedLastNames = lastNames(hyphenatedNames);
73           System.out.print("Hyphenated last names: ");
74   
75           String hyp = String.join(", ", hyphenatedLastNames);
76           System.out.println(hyp);
77   
78           System.out.println();
79   
80   
81   
82   
83           // POINT G: Print the Integer value of the total length of all names in the names Arraylist.
84   
85           // POINT H: Print the Integer value of the total length of all first names in the names Arraylist.
86   
87           // POINT I: Print the Integer value of the product of the length of all first names in the names Arraylist.
88   
89       } // END MAIN
90   
91               private static String firstName (String directoryStyleName)
92               {
93                   int spaceLoc = directoryStyleName.indexOf(" ");
94                   return directoryStyleName.substring(spaceLoc + 1);
95               }
96   
97               private static List<String> firstNames (List<String> names) {
98                   List<String> firsts = new ArrayList<>();
99                       for (String name : names) {
100                          firsts.add(firstName(name));
101                      }
102                      return firsts;
103              }
104  
105              private static List<String> lastNames (List<String> names) {
106                  List<String> lasts = new ArrayList<>();
107                  for (String name : names) {
108                      lasts.add(lastNames(name));
109                  }
110                  return lasts;
111              }
112  
113              private static String lastNames(String directoryStyleName) {
114                  int lastNameComaLoc = directoryStyleName.indexOf(",");
115                  return directoryStyleName.substring(0, lastNameComaLoc);
116              }
117  
118              // CONVERT TO UPPERCASE
119              public static List<String> upperCaseNames(List<String> names) {
120                  List <String> uppercases = new ArrayList<>();
121                  for ( String name : names ) {
122                      uppercases.add(name.toUpperCase());
123                  }
124                  return uppercases;
125              }
126              public static List<String> hyphenatedNames(List<String> names) {
127                  List<String> hyphenateds = new ArrayList<>();
128                  for (String name : names) {
129                      if (name.contains("-")) {
130                          hyphenateds.add(name);
131                      }
132                  }
133                  return hyphenateds;
134              }
135  
136  }
137