1 /*
 2  * Program featuring straight up arrays and file IO to read and reverse copy a lyric.
 3  */
 4 package arrayplay;
 5 
 6 import java.io.File;
 7 import java.io.FileNotFoundException;
 8 import java.io.IOException;
 9 import java.io.PrintWriter;
10 import java.util.Scanner;
11 
12 /**
13  *
14  * @author evankemp
15  */
16 public class ReverseCopy {
17 
18     /**
19      * @param args the command line arguments
20      */
21     public static void main(String[] args) throws FileNotFoundException, IOException {
22         String inputFileName = "AuClairDeLaLune.text";
23         String outputFileName = "AuClairDeLaLuneReversed.text";
24         String[] words = readWordsFromFile(inputFileName);
25         writeWordsToFile(words, outputFileName);
26     }
27     
28     private static final int LIMIT = 1000;
29 
30     private static String[] readWordsFromFile(String inputFileName) throws FileNotFoundException {
31         // Equate a scanner with the input file
32         Scanner scanner = establishScanner(inputFileName);
33         // Read the words from the file into an oversized array
34         String[] temp = new String[LIMIT];
35         int index= 0;
36         while (scanner.hasNext()) {
37             String word = scanner.next();
38             temp[index] = word;
39             index = index + 1;
40         }
41         int wordCount = index;
42         // Transfer hte words to a perfectly sized array
43         String[] words = new String[wordCount];
44         for (int x = 0; x < wordCount; x=x+1) {
45             words[x] = temp[x];
46         }
47         // Return the words
48         return words;
49                 
50     }
51 
52     private static void writeWordsToFile(String[] words, String outputFileName) throws IOException{
53         // Equate a printer with an output file
54         PrintWriter printer = getPrintWriter(outputFileName);
55         //Print the words to the file
56         for (int x =words.length-1; x>= 0; x=x-1) {
57             printer.println(words[x]);
58         }
59         printer.close();
60     }
61 
62     private static Scanner establishScanner(String inputFileName) throws FileNotFoundException {
63         String fullFileName = createFullFileName(inputFileName);
64         return new Scanner(new File(fullFileName));
65     }
66 
67     private static PrintWriter getPrintWriter(String outputFileName) throws FileNotFoundException {
68         String fullFileName = createFullFileName(outputFileName);
69         PrintWriter printer = new PrintWriter(fullFileName);
70         return printer;
71     }
72 
73     //Create the full file name for a simple file name, assuming that it will be
74     // found in the CS1Files/data subdirectory of the user's home directory.
75     private static String createFullFileName(String fileName) {
76         String separator = System.getProperty("file.separator");
77         String home = System.getProperty("user.home");
78         String path = home + separator + "CS1Files" + separator + "data" + separator;
79         String fullFileName = path + fileName;
80         return fullFileName;      
81     }
82     
83 }
84