1    /* //Program to read and reverse the copy of the lyric of the song 
2     */
3    
4    
5    
6    package arraylistplay;
7    
8    import java.io.File;
9    import java.io.FileNotFoundException;
10   import java.io.IOException;
11   import java.io.PrintWriter;
12   import java.util.ArrayList;
13   import java.util.Scanner;
14   
15   public class ReverseCopy {
16       public static void main(String[] args) throws FileNotFoundException, IOException {
17           String inputFileName = "Happier.text";
18           String outputFileName = "HappierReversed.text";
19           ArrayList<String> words = readWordsFromFile(inputFileName);
20           writeWordsToFile(words,outputFileName);
21       }
22   
23       private static ArrayList<String> readWordsFromFile(String inputFileName)
24           throws FileNotFoundException {
25           //Equate a scanner with the input file
26           Scanner scanner = establishScanner(inputFileName);
27           //read the word from the file into a dynamically growing ArrayList
28           ArrayList<String> words = new ArrayList<>();
29           while (scanner.hasNext()) {
30               String word = scanner.next();
31               words.add(word);
32           }
33           // Return the words
34           return words;
35   
36           }
37   
38   
39   
40       private static void writeWordsToFile(ArrayList<String> words, String outputFileName)
41               throws IOException {
42           //Equate a printer with an output file
43           PrintWriter printer = getPrintWriter(outputFileName);
44           //print the word to the file
45           for (int x = words.size() - 1; x >= 0; x = x - 1) {
46               printer.println(words.get(x));
47           }
48           printer.close();
49       }
50   
51       private static Scanner establishScanner(String inputFileName)
52               throws FileNotFoundException {
53           String fullFileName = createFullFileName(inputFileName);
54           return new Scanner(new File(fullFileName));
55       }
56   
57   
58       private static PrintWriter getPrintWriter(String outputFileName)
59               throws FileNotFoundException {
60           String fullFileName = createFullFileName(outputFileName);
61           PrintWriter printer = new PrintWriter(fullFileName);
62           return printer;
63       }
64   
65       //Create the full file name for a simple file name assuming that it willl be
66       //found in the CS1File/data subdirectory of the user's home directory
67       private static String createFullFileName(String fileName) {
68           String separator = System.getProperty("file.separator");
69           String home = System.getProperty("user.home");
70           String path = home + separator + "CS1Files" + separator + "data" + separator;
71           String fullFileName = path + fileName;
72           return fullFileName;
73       }
74   }
75   
76   
77