1    /* 
2     * This program feats. an ArrayList to do its reverse copy thing from one file to another. 
3     */
4    
5    package arraylistplay;
6    
7    import java.io.File;
8    import java.io.FileNotFoundException;
9    import java.io.IOException;
10   import java.io.PrintWriter;
11   import java.lang.reflect.Array;
12   import java.util.ArrayList;
13   import java.util.Scanner;
14   
15   public class ReverseCopy {
16   
17       public static void main(String[] args) throws FileNotFoundException, IOException {
18   
19           String inputFileName = "Dodie.txt";
20           String outputFileName = "DodieReversed.txt";
21           ArrayList<String> words = readWordsFromFile(inputFileName);
22           writeWordsToFile(words, outputFileName);
23   
24       }
25   
26       private static ArrayList<String> readWordsFromFile(String inputFileName) throws FileNotFoundException {
27   
28           Scanner scanner = establishScanner(inputFileName);
29           ArrayList<String> words = new ArrayList<>();
30           while (scanner.hasNext()) {
31   
32               String word = scanner.next();
33               words.add(word);
34   
35           }
36   
37           return words;
38   
39       }
40   
41       private static void writeWordsToFile(ArrayList<String> words, String outputFileName) throws IOException {
42   
43           PrintWriter printer = getPrintWriter(outputFileName);
44           for (int x = words.size() - 1; x >= 0; x = x - 1) {
45               printer.println(words.get(x));
46           }
47   
48           printer.close();
49   
50       }
51   
52       private static Scanner establishScanner(String inputFileName) throws FileNotFoundException {
53   
54           String fullFileName = createFullFileName(inputFileName);
55           return new Scanner(new File(fullFileName));
56   
57       }
58   
59       private static PrintWriter getPrintWriter(String outputFileName) throws FileNotFoundException {
60   
61           String fullFileName = createFullFileName(outputFileName);
62           PrintWriter printer = new PrintWriter(fullFileName);
63           return printer;
64   
65       }
66   
67       private static String createFullFileName(String fileName) {
68   
69           String separator = System.getProperty("file.separator");
70           String home = System.getProperty("user.home");
71           String path = home + separator + "CS1Files" + separator + "data" + separator;
72           String fullFileName = path + fileName;
73           return fullFileName;
74   
75       }
76   
77   }
78