该程序支持统计每个单词在.txt文件中出现的次数 我处于正确的轨道上,因为此程序显示文件中的每个单词在文本区域,但我需要它不重复单词并增加计数器。我是在正确的轨道下为每个单词:单词声明?我知道我在这个陈述中只需要更多的逻辑,但我不知道如何实现它。我应该补充一点,我正在使用orderedlinkedlists将所有单词按字母顺序放在文本区域中,以便它们或按照彼此相邻的顺序排列。计算单词在txt文件中出现的次数Java
import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.util.Scanner;
public class Oct29 extends JPanel
{
private OrderedList<String> words;
private String filename;
private int width = 800;
private int height = 600;
private TextArea textarea;
public Oct29()
{
Scanner scan;
textarea = new TextArea("",0,0,TextArea.SCROLLBARS_VERTICAL_ONLY);
textarea.setFont(new Font("Helvetica",Font.PLAIN,24));
textarea.setPreferredSize(new Dimension(width,height));
setPreferredSize(new Dimension(width,height));
add(textarea);
JFileChooser chooser = new JFileChooser("../Text");
int returnvalue = chooser.showOpenDialog(null);
if(returnvalue == JFileChooser.APPROVE_OPTION)
{
try
{
File file = chooser.getSelectedFile();
filename = file.getName();
System.err.println(filename);
scan = new Scanner(file);
}
catch (IOException e)
{
System.err.println("IO EXCEPTION");
return;
}
}
else
{
return;
}
words = new OrderedLinkedList<String>();
while(scan.hasNext())
{
String token = scan.next().toLowerCase();
token = token.replace(",","").replace(".","");
words.add(token);
}
scan.close();
textarea.append(" "+filename+" has wordcount: "+words.size()+
"\n-------------------------\n\n");
for(String word : words)
{
for(int i=0;i<words.size(); i++)
{
int x =0; // This does not work but I'm trying to find if I'm on the right track
if(x < words.size())
textarea.append(word+"\n"); // THIS BY ITESELF WITHOUT THE INNER FOR LOOP WORKS FINE FOR DISPLAYING THE WORDS IN A TEXT AREA.
x++;
}
}
}
public static void main(String[] arg)
{
JFrame frame = new JFrame("Oct 29");
frame.getContentPane().add(new Oct29());
frame.pack();
frame.setVisible(true);
}
}
之后“单词”的内容是什么?为什么我问的是,你是否进入for循环?调试它?在某个地方放置一个断点,然后逐步查看最终结果。 – mattias 2014-11-10 17:08:18