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PODates from a text file
 

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    <p>I just wanted to ask whether it is possible to find Dates in all possible formats in a text file and print the results. I was able to open the file and format the dates but I couldn't combine the two elements. Here are the codes so far. I appreciate any help.Thanks</p> <p>here are the requirements and my approach : </p> <p>Code needs to search all headings, headers, text and footnotes. Code searches for a date, such as day of week, month, numeral 1 to 31 followed by a month, year between 1950 &amp; 2050. Code needs to get date as well as the nearest heading above and get the applicable main section Code needs to get page number.</p> <p>For Date :</p> <pre><code>import java.text.*; import java.util.*; public class Dates { public static void main(String[] args) { Date d1 = new Date(); DateFormat[] dfa = new DateFormat[6]; dfa[0] = DateFormat.getInstance(); dfa[1] = DateFormat.getDateInstance(); dfa[2] = DateFormat.getDateInstance(DateFormat.SHORT); dfa[3] = DateFormat.getDateInstance(DateFormat.MEDIUM); dfa[4] = DateFormat.getDateInstance(DateFormat.LONG); dfa[5] = DateFormat.getDateInstance(DateFormat.FULL); for(DateFormat df : dfa) { System.out.println(df.format(d1)); } DateFormat df2 = DateFormat.getDateInstance(DateFormat.FULL); String s = df2.format(d1); System.out.println(s); try { Date d2 = df2.parse(s); System.out.println("parsed = " +d2.toString()); } catch(ParseException pe) { System.out.println("Parse Exception"); } } } </code></pre> <p>for opening files : </p> <pre><code>import javax.swing.*; import java.io.*; import java.util.*; public class FileOpener { /** * use a dialog box to select a text file (.txt) * @return a Scanner for the selected file, or null if cancel selected */ public static Scanner selectTextFile() { do { JFileChooser chooser = new JFileChooser(); FileNameExtensionFilter filter = new FileNameExtensionFilter( "Text/Java files","doc", "txt", "java"); chooser.setFileFilter(filter); int returnVal = chooser.showOpenDialog(null); try { if(returnVal == JFileChooser.APPROVE_OPTION) { return new Scanner(chooser.getSelectedFile()); } else { return null; } } catch (FileNotFoundException e) { JOptionPane.showMessageDialog(null, "Invalid file!", "error", JOptionPane.ERROR_MESSAGE); } } while (true); } /** * given a String, uses a Scanner to count the number of words * @return number of words in the String */ public static int countWordsOnLine(String line) { Scanner s = new Scanner(line); //int count = 0; while (s.hasNext()) { s.next(); //count++; } //return count; } public static void main(String[] args) { // make Java look like your normal OS try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (Exception e) { // ignore exceptions and continue } Scanner lineScanner = FileOpener.selectTextFile(); int numberOfWords = 0; if (lineScanner!=null) { while (lineScanner.hasNextLine()) { numberOfWords += FileOpener.countWordsOnLine( lineScanner.nextLine()); } System.out.println("The number of words is: " + numberOfWords); //System.out.println(getPageNumber()); } } } </code></pre> <p>Table that will contain the end result:</p> <pre><code>import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import java.awt.Dimension; import java.awt.GridLayout; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; public class SimpleTableDemo extends JPanel { private boolean DEBUG = false; public SimpleTableDemo() { super(new GridLayout(1,0)); String[] columnNames = {"HEADER", "SENTENCE", "PAGE", "DATE"}; Object[][] data = { {" ", " ", " ", new Integer(5)}, {" ", " ", " ", new Integer(3)}, {" ", " ", " ", new Integer(2)}, {" ", " ", " ", new Integer(20)}, {" ", " ", " ", new Integer(10)} }; final JTable table = new JTable(data, columnNames); table.setPreferredScrollableViewportSize(new Dimension(500, 70)); table.setFillsViewportHeight(true); if (DEBUG) { table.addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent e) { printDebugData(table); } }); } //Create the scroll pane and add the table to it. JScrollPane scrollPane = new JScrollPane(table); //Add the scroll pane to this panel. add(scrollPane); } private void printDebugData(JTable table) { int numRows = table.getRowCount(); int numCols = table.getColumnCount(); javax.swing.table.TableModel model = table.getModel(); System.out.println("Value of data: "); for (int i=0; i &lt; numRows; i++) { System.out.print(" row " + i + ":"); for (int j=0; j &lt; numCols; j++) { System.out.print(" " + model.getValueAt(i, j)); } System.out.println(); } System.out.println("--------------------------"); } /** * Create the GUI and show it. For thread safety, * this method should be invoked from the * event-dispatching thread. */ private static void createAndShowGUI() { //Create and set up the window. JFrame frame = new JFrame("SimpleTableDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Create and set up the content pane. SimpleTableDemo newContentPane = new SimpleTableDemo(); newContentPane.setOpaque(true); //content panes must be opaque frame.setContentPane(newContentPane); //Display the window. frame.pack(); frame.setVisible(true); } public static void main(String[] args) { //Schedule a job for the event-dispatching thread: //creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); } } </code></pre>
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    1. USMatt Ball
    1. USApeiron Kambyses
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    1. COYou might want to work on consistently indenting your code for (much) better readability.
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      1. PODates from a text file
      1. USMatt Ball
    2. COPlease limit your code to just the relevant portions, and ask a specific question.
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      1. USMichael Petrotta
 

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