1 /*
 2  * Program featuring straight up arrays and file IO to read and reverse copy 
 3  * a lyric.
 4  */
 5 
 6 package arrayplay;
 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.Scanner;
13 
14 /**
15  *
16  * @author kchan2
17  */
18 public class ReverseCopy {
19 
20     /**
21      * @param args the command line arguments
22      */
23     public static void main(String[] args) throws FileNotFoundException, IOException {
24         String inputFileName = "IfIDieYoung.text";
25         String outputFileName = "IfIDieYoungReversed.text";
26         String[] words = readWordsFromFile(inputFileName);
27         writeWordstoFile(words,outputFileName);
28     }
29     
30     private static final int LIMIT = 1000;
31 
32     private static String[] readWordsFromFile(String inputFileName) throws FileNotFoundException {
33         //Equate a scanner with the input file
34         Scanner scanner = establishScanner(inputFileName);
35         //Read the words from the file into an oversized array
36         String[] temp = new String[LIMIT];
37         int index = 0;
38         while ( scanner.hasNext() ) {
39             String word = scanner.next();
40             temp[index] = word;
41             index = index + 1;
42         }
43         int wordCount = index;
44         //Transfer the words to a perfectly sized array
45         String[] words = new String[wordCount];
46         for ( int x = 0; x < wordCount; x = x + 1 ) {
47             words[x] = temp[x];
48         }
49         //Return the words
50         return words;
51     }
52 
53     private static void writeWordstoFile(String[] words, String outputFileName) throws IOException {
54         //Equate a printer with an output file
55         PrintWriter printer = getPrintWriter(outputFileName);
56         //Print the words to the file
57         for ( int x = words.length-1; x >= 0; x = x - 1) {
58             printer.println(words[x]);
59         }
60         printer.close();
61     }
62 
63     private static Scanner establishScanner(String inputFileName) throws FileNotFoundException {
64         String fullFileName = createFullFileName(inputFileName);
65         return new Scanner(new File(fullFileName));
66     }
67 
68     private static PrintWriter getPrintWriter(String outputFileName) throws FileNotFoundException {
69         String fullFileName = createFullFileName(outputFileName);
70         PrintWriter printer = new PrintWriter(fullFileName);
71         return printer;
72     }
73     
74     //Create the full file name for a simple file name, assuming that it will be
75     //found in the CS1Files/data subdirectory of the user's home directory.
76 
77     private static String createFullFileName(String fileName) {
78         String separator = System.getProperty("file.separator");
79         String home = System.getProperty("user.home");
80         String path = home + separator + "CS1Files" + separator + "data" + separator;
81         String fullFileName = path + fileName;
82         return fullFileName;
83     }
84     
85 }
86