1    
2    
3    /* 
4     *Program featuring straight up arrays and file IO to read and reverse copy a lyric. 
5     */
6    
7    package arrayplay;
8    
9    import java.io.File;
10   import java.io.FileNotFoundException;
11   import java.io.IOException;
12   import java.io.PrintWriter;
13   import java.sql.SQLOutput;
14   import java.util.Scanner;
15   
16   public class ReverseCopy{
17       public static void main(String [] args) throws FileNotFoundException, IOException {
18           String inputFileName = "CountryRoads.text";
19           String outputFileName = "CountryRoadsReversed.text";
20           String[] words = readWordsFromFile(inputFileName);
21           writeWordsToFile(words,outputFileName);
22       }
23   
24       private static final int LIMIT = 1000;
25   
26       private static String[] readWordsFromFile(String inputFileName) throws FileNotFoundException {
27           // Equate a scanner with the input file
28           Scanner scanner = establishScanner(inputFileName);
29           //Read the words from the file into an poversized array
30           String[] temp = new String[LIMIT];
31           int index = 0;
32           while (scanner.hasNext() ) {
33               String word = scanner.next();
34               temp[index] = word;
35               index = index + 1;
36           }
37           int wordCount = index;
38           //Transfer the words to a perfectly sized array
39           String[] words = new String[wordCount];
40           for ( int x = 0; x < wordCount; x = x + 1) {
41               words[x] = temp [x];
42           }
43           //Return the words
44           return words;
45       }
46       private static void writeWordsToFile(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.length - 1; x >= 0; x = x - 1) {
51               printer.println(words[x]);
52           }
53           printer.close ();
54       }
55       private static Scanner establishScanner(String inputFileName) throws FileNotFoundException {
56           String fullFileName = createFullFileName(inputFileName);
57           return new Scanner(new File(fullFileName));
58       }
59       private static PrintWriter getPrintWriter(String outputFileName) 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  asimple file name, assuming that it will be
66       //found in the CS1Files/data subdirectory of the user's home directory.
67   
68       private static String createFullFileName(String fileName) {
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