package arrayplay; import java.io.File; import java.io.FileNotFoundException; import java.io.IOException; import java.io.PrintWriter; import java.util.Scanner; public class ReverseCopy { public static void main(String[] args) throws FileNotFoundException, IOException { String inputFileName = "ForeverYoung.text"; String outputFileName = "ForeverYoungReversed.text"; String[] words = readWordsFromFile(inputFileName); writeWordsToFile(words,outputFileName); } private static final int LIMIT = 1000; private static String[] readWordsFromFile(String inputFileName) throws FileNotFoundException { //Equate a scanner with the input file Scanner scanner = establishScanner(inputFileName); // Read the words form the file into an over sized array; String[] temp = new String[LIMIT]; int index = 0; while (scanner.hasNext()) { String word = scanner.next(); temp[index] = word; index = index + 1; } int wordCount = index; //Transfer the words to a perfectly sized array String[] words = new String[wordCount]; for (int x = 0; x < wordCount; x = x + 1) { words[x] = temp[x]; } //Return the words return words; } private static void writeWordsToFile(String[] words, String outputFileName) throws IOException { //Equate a printer with an output file PrintWriter printer = getPrintWriter(outputFileName); // Print the words to the file for ( int x = words.length - 1; x>= 0; x = x - 1) { printer.println(words[x]); } printer.close(); } private static Scanner establishScanner(String inputFileName) throws FileNotFoundException { String fullFileName = createFullFileName(inputFileName); return new Scanner (new File(fullFileName)); } private static PrintWriter getPrintWriter(String outputFileName) throws FileNotFoundException { String fullFileName = createFullFileName(outputFileName); PrintWriter printer = new PrintWriter(fullFileName); return printer; } // Create the full file name for a simple file name, assuming that it will be // found in the CS1Files/data subdirectory of the user's home directory. private static String createFullFileName(String fileName) { String separator = System.getProperty("file.separator"); String home = System.getProperty("user.home"); String path = home + separator + "CS1Files" + separator + "data" + separator; String fullFileName = path + fileName; return fullFileName; } }