Hi I need help creating a word count file, the file should print the name and number of times the words were counted in a file. I need to use the JFileChooser and the results should be printed in the resultArea of the JTextfield.
example:
and 33
use 24
Here is what I have so far, my buttons arent working.
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.TreeMap;
import java.util.TreeSet;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author Katherine Prosser
*/
public class WordCountFrame extends JFrame
{
private Map myMap;
private BufferedReader reader;
private File file;
private static final int FRAME_WIDTH = 300;
private static final int FRAME_HEIGHT = 250;
private static final int AREA_ROWS = 12;
private static final int AREA_COLUMNS = 12;
private JPanel controlPanel, displayPanel;
private JButton startButton, exitButton;
private JScrollPane displayScrollPane;
private JTextArea DisplayArea;
private final JTextArea resultArea;
private JTextField textField;
private String text;
/**
* Create a WordCount object that will be able to read
* from a file selected using standard java FileChooser.
*/
public WordCountFrame()
{
resultArea = new JTextArea(AREA_ROWS, AREA_COLUMNS);
resultArea.setEditable(false);
createControlPanel();
createControlPanel();
setSize(FRAME_WIDTH,FRAME_HEIGHT);
setLocation(FRAME_WIDTH/4, FRAME_HEIGHT/4 );
}
private void createDisplayPanel()
{
displayPanel = new JPanel();
displayPanel.add(controlPanel);
displayPanel.add(startButton);
displayPanel.add(exitButton);
add(displayPanel,BorderLayout.NORTH);
//create the textarea
//create the scrollpane with the textarea
//add the scrollpane to the panel
//add the panel to the frame
final int FIELD_WIDTH = 12;
textField = new JTextField(FIELD_WIDTH);
textField.setText("");
JScrollPane scrollPane = new JScrollPane(resultArea);
add(controlPanel, BorderLayout.SOUTH);
add(scrollPane);
add(scrollPane, BorderLayout.CENTER);
}
private void createControlPanel()
{
//create the panel
controlPanel = new JPanel();
controlPanel.setLayout(new GridLayout(1,4));
//create the buttons
startButton = new JButton("start");
exitButton = new JButton ("exit");
//add the buttons to the panel
//add the panel to the frame
controlPanel.add(startButton);
controlPanel.add(exitButton);
add(controlPanel,BorderLayout.NORTH);
{
startButton.addActionListener(new ActionListener()
{
private JFileChooser chooser;
private int retval;
private File file;
public void actionPerformed(ActionEvent evt)
{
if (chooser == null){
chooser = new JFileChooser(".");
}
try{
if (retval == JFileChooser.APPROVE_OPTION) {
file = chooser.getSelectedFile();
reader = new BufferedReader(
new FileReader(file.getPath()));
}
}
catch(Exception event){
throw new RuntimeException("file open problem in WordReader");
}
}
/**
* Read file selected at construction time and store words and
* line numbers internally for subsequent reporting by print.
*
* @throws IOexception of reading file fails
*/
void read() throws IOException
{
myMap = new TreeMap();
String line;
int linecount = 0;
while ((line = reader.readLine()) != null) {
linecount++;
StringTokenizer tokenizer = new StringTokenizer(line);
while (tokenizer.hasMoreTokens()) {
String word = tokenizer.nextToken();
Set lineset = (Set) myMap.get(word);
if (lineset != null) {
lineset.add(new Integer(linecount));
}
else {
lineset = new TreeSet();
lineset.add(new Integer(linecount));
myMap.put(word,lineset);
}
}
}
}
/**
* Print list of words with line numbers as obtained
* by most recent call to read.
*
*/
public void print()
{
Iterator allKeys = myMap.keySet().iterator(); // each word
while (allKeys.hasNext()) {
Object key = allKeys.next();
resultArea.append(key + "\t");
Iterator lines = ((Set) myMap.get(key)).iterator();
while (lines.hasNext()) {
resultArea.append(lines.next() + " ");
}
}
}
});Any help is appreciated..