因此，我尝试通过另一个文件扫描多个文件，以查看单词出现的次数，＆＃34;其他文件＆＃34;取出并放置在树形图中，每次扫描文件中的下一个单词等于地图中的一个键，该键假设其值增加1.无论出于何种原因，它都没有正确地替换值。我几乎肯定错误在这个区域
while(fileArrayScan.hasNext())
{
try
{
String nextWord = fileArrayScan.next();
for(String key : tagsCount.keySet())
{
String currentKey = key;
if (currentKey.equals(nextWord));
{
int value = tagsCount.get(key);
tagsCount.put(key, value + 1);
}
}
}
catch(NoSuchElementException ex)
{
//if there is a random empty line it catches it
}
}
这是整件事
import javax.swing.JFrame;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author hurtks
*/
public class TagCloudGeneratorRunner {
/**
* @param args the command line arguments
*/
public static void main(String[] args)
{
JFrame frame = new TagCloudGeneratorFrame();
frame.setTitle("Kyle's Tag Cloud Generator");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
它分为2个src文件（所有system.out.prints用于测试）
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Scanner;
import java.util.TreeMap;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author hurtks
*/
public class TagCloudGeneratorFrame extends JFrame
{
public TagCloudGeneratorFrame()
{
//set the arraylist
final ArrayList<File> fileArray = new ArrayList();
//set the height and width of the frame
final int HEIGHT = 600;
final int WIDTH = 500;
Toolkit kit = Toolkit.getDefaultToolkit();
Dimension screenSize = kit.getScreenSize();
int screenHeight = screenSize.height;
int screenWidth = screenSize.width;
this.setLocation(screenWidth / 4, screenHeight / 4);
//set the panels that are going to be used
final JPanel mainPnl, chooserPnl, filePnl, controlPnl;
//set the buttons that are going to be used
final JButton chooseFileBtn, submitBtn, quitBtn;
//ser the file chooser
final JFileChooser chooser, tagChooser;
chooser = new JFileChooser();
tagChooser = new JFileChooser();
//set the textarea and scrollpane that are going to be used
final int AREA_ROWS = 10;
final int AREA_COLUMNS = 25;
//final int value = 0;
final JTextArea fileNameArea;
fileNameArea = new JTextArea(AREA_ROWS, AREA_COLUMNS);
fileNameArea.setEditable(false);
JScrollPane scrollPane = new JScrollPane(fileNameArea);
fileNameArea.setText("");
//create the panels and add them to the frame
mainPnl = new JPanel();
mainPnl.setLayout(new BorderLayout());
chooserPnl = new JPanel();
filePnl = new JPanel();
controlPnl = new JPanel();
mainPnl.add(chooserPnl, BorderLayout.NORTH);
mainPnl.add(filePnl, BorderLayout.CENTER);
mainPnl.add(controlPnl, BorderLayout.SOUTH);
add(mainPnl);
setSize(HEIGHT, WIDTH);
//create the components
chooseFileBtn = new JButton("New File");
submitBtn = new JButton("Submit");
quitBtn = new JButton("Quit");
//add the components to the GUI
chooserPnl.add(chooseFileBtn);
filePnl.add(scrollPane);
controlPnl.add(submitBtn);
controlPnl.add(quitBtn);
//add the listener to the quitBtn
class QuitButtonListener implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
System.exit(0);
}
}
ActionListener quitListener = new QuitButtonListener();
quitBtn.addActionListener(quitListener);
//add the listener to the chooseFileBtn
class chooseFileButtonListener implements ActionListener
{
//set the arraylist
//ArrayList<File> fileArray = new ArrayList<>();
public void actionPerformed(ActionEvent evt)
{
if(chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION)
{
File selectedFile = chooser.getSelectedFile();
fileArray.add(selectedFile);
fileNameArea.append("" + selectedFile + "\n");
//return fileArray;
}
}
}
ActionListener chooseListener = new chooseFileButtonListener();
chooseFileBtn.addActionListener(chooseListener);
//add the listener to the submitBtn
class submitButtonListener implements ActionListener
{
Map<String, Integer> tagsCount = new TreeMap();
Scanner tagScanner;
//JFileChooser tagChooser;
//tagChooser = new JFileChooser();
//PrintWriter output = new PrintWriter("htmlFile.txt");
public void actionPerformed(ActionEvent evt)
{
try
{
JOptionPane.showMessageDialog(null, "Please Choose the file of Tags to scan for.");
if(tagChooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION)
{
File tagFile = tagChooser.getSelectedFile();
String fileDir = tagFile.getParent();
File outputFile = new File(fileDir, "htmlFile.txt");
PrintWriter output = new PrintWriter(outputFile);
//File tagFile = tagChooser.getSelectedFile();
tagScanner = new Scanner(tagFile);
while(tagScanner.hasNext())
{
tagsCount.put(tagScanner.next().toLowerCase(), 0);
}
for (int j = 0; j < fileArray.size(); j++)
{
File thisFile = fileArray.get(j);
//Scanner for File Array
Scanner fileArrayScan = new Scanner(thisFile);
while(fileArrayScan.hasNext())
{
try
{
String nextWord = fileArrayScan.next();
System.out.println(nextWord + " next word in file");
for(String key : tagsCount.keySet())
{
String currentKey = key;
System.out.println(currentKey + " Current Key");
if (currentKey.equals(nextWord));
{
System.out.println(currentKey + " Current Key in if loop");
int value = tagsCount.get(key);
System.out.println(value + " value for key map");
tagsCount.put(key, value + 1);
}
}
}
catch(NoSuchElementException ex)
{
//if there is a random empty line it catches it
}
}
//System.out.println(thisFile);
}
output.println(tagsCount);
System.out.println(tagsCount);
JOptionPane.showMessageDialog(null, "The File was saved as 'htmlFile.html'");
output.flush();
output.close();
}
}
catch(FileNotFoundException ex)
{
fileNameArea.append("The File could not be found, Try Again!");
}
}
}
ActionListener submitListener = new submitButtonListener();
submitBtn.addActionListener(submitListener);
}
}
答案 0 :(得分：2)
从此行中删除分号：
if (currentKey.equals(nextWord));
它作为if的主体，并且它下面的大括号中的块总是被执行。将其更改为
if (currentKey.equals(nextWord))