1    package arraylistplay;
2    import java.io.File;
3    import java.io.FileNotFoundException;
4    import java.io.IOException;
5    import java.io.PrintWriter;
6    import java.util.ArrayList;
7    import java.util.Scanner;
8    public class ReverseCopy {
9        public static void main(String[] args) throws FileNotFoundException, IOException {
10           String inputFileName = "SongLyric2.text";
11           String outputFileName = "SongLyric2Reversed.text";
12           ArrayList<String> words = readWordsFromFile(inputFileName);
13           writeWordsToFile(words, outputFileName);
14   
15   
16       }
17   
18       private static ArrayList<String> readWordsFromFile(String inputFileName) throws FileNotFoundException {
19           // Equate a scanner with the input file
20           Scanner scanner = establishScanner(inputFileName);
21           // Read the words from the file into a dynamically growing ArrayList
22           ArrayList<String> words = new ArrayList<>();
23           while (scanner.hasNext()) {
24               String word = scanner.next();
25           words.add(word);
26           }        
27           // Return the words
28           return words;
29   
30       }
31   
32       private static Scanner establishScanner(String inputFileName) throws FileNotFoundException {
33           String fullFileName = createFullFileName(inputFileName);
34           return new Scanner(new File(fullFileName));
35       }
36   
37       private static String createFullFileName(String fileName) {
38           String separator = System.getProperty("file.separator");
39           String home = System.getProperty("user.home");
40           String path = home + separator + "CS1Files" + separator + "data" + separator;
41           String fullFileName = path + fileName;
42           return fullFileName;
43       }
44   
45   
46       private static void writeWordsToFile(ArrayList<String> words, String outputFileName) throws IOException {
47           // Equate a printer with an output file
48            PrintWriter printer = getPrintWriter(outputFileName);
49            // Print the words to the file
50           for (int x = words.size() - 1; x >= 0; x = x - 1)
51           {
52               printer.println(words.get(x));
53           }
54           printer.close();
55       }
56   
57       private static PrintWriter getPrintWriter(String outputFileName)throws FileNotFoundException {
58                         String fullFileName = createFullFileName(outputFileName);
59                         PrintWriter printer = new PrintWriter(fullFileName);
60                         return printer;
61       }
62   }
63