1    /* 
2    * Program featuring straight up arrays and file IO to read and reverse copy a lyric 
3     */
4    
5    package arrayplay;
6    
7    import java.io.File;
8    import java.io.FileNotFoundException;
9    import java.io.IOException;
10   import java.io.PrintWriter;
11   import java.util.Scanner;
12   
13   public class ReverseCopy {
14   
15       public static void main (String[] args) throws FileNotFoundException, IOException {
16           String inputFileName = "Honesty.text";
17           String outputFileName = "Honesty.ReversedText";
18           String[] words = readWordsFromFile(inputFileName);
19           writeWordsToFile(words, outputFileName);
20       }
21   
22       private static final int LIMIT = 1000;
23   
24       private static String[] readWordsFromFile(String inputFileName) throws FileNotFoundException {
25           //Equate a scanner with the input file
26           Scanner scanner = establishScanner(inputFileName);
27           //Read the words from the file into an oversized array
28           String[] temp = new String[LIMIT];
29           int index = 0;
30           while (scanner.hasNext()) {
31               String word = scanner.next();
32               temp[index] = word;
33               index = index + 1;
34           }
35           int wordCount = index;
36           //Transfer the words to a perfectly sized array
37           String[] words = new String[wordCount];
38           for (int x = 0; x < wordCount; x = x + 1) {
39               words[x] = temp[x];
40           }
41           //Return the words
42           return words;
43       }
44       private static void writeWordsToFile(String[] words, String outputFileName) throws FileNotFoundException {
45           //Equate a printer with an output file
46           PrintWriter printer = getPrintWriter(outputFileName);
47           //Print the words to the file
48           for ( int x = words.length-1; x>= 0; x = x-1) {
49               printer.println(words[x]);
50           }
51           printer.close();
52       }
53       private static Scanner establishScanner(String inputFileName) throws FileNotFoundException {
54           String fullFileName = createFullFileName(inputFileName);
55           return new Scanner(new File(fullFileName));
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       private static String createFullFileName(String fileName) {
63           String separator = System.getProperty("file.separator");
64           String home = System.getProperty("user.home");
65           String path = home + separator + "CS1Files" + separator + "data" + separator;
66           String fullFileName = path + fileName;
67           return fullFileName;
68       }
69   }
70