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import javax.swing.JOptionPane; /****************************************************************************************** * * Roman Numeral Application * Computer Science 212, Spring 2013 * * An input file name should be given on the command line. * Its contents will be read, converted to Roman numerals, stored in an array, * sorted and printed. * Invalid Roman numerals will be printed to the console and discarded. * ******************************************************************************************/ public class Project1 { public static final int MAX_ROMAN_NUMERALS = 100; public static void main (String[] args) { String inputLine; int arrayLength =0; RomanNumeral myRomanNumeral; RomanNumeral[] romanNumeralList = new RomanNumeral[MAX_ROMAN_NUMERALS]; // // If there is no command line argument for the file name a message will be // displayed and the program terminated. // if (args.length == 0) { JOptionPane.showMessageDialog(null," There is no input file given on the command line."); System.exit(0); } // // The file is opened and each line is read, converted to a Roman Numeral and // stored in the array. // TextFileInput in = new TextFileInput(args[0]); inputLine = in.readLine(); while (inputLine != null) { try { myRomanNumeral = new RomanNumeral(inputLine); romanNumeralList[arrayLength++] = myRomanNumeral; } catch (IllegalArgumentException iae) { System.out.println("Illegal Roman numeral: "+inputLine); } finally { inputLine = in.readLine(); } } // while // // Print out all the valid Roman numerals in the order in which they were read. // System.out.println("Original:"); for(int i=0;i<arrayLength;i++) System.out.println(romanNumeralList[i]+" ("+romanNumeralList[i].getDecimalValue()+")"); // // Sort the array of Roman numerals in ascending order. // RomanNumeralSort.sort(romanNumeralList, arrayLength); // // Print out all the valid Roman numerals in ascending order. // System.out.println("Sorted:"); for(int i=0;i<arrayLength;i++) System.out.println(romanNumeralList[i]+" ("+romanNumeralList[i].getDecimalValue()+")"); } //main } // Project1