扩展我的程序以报告列表中单词的频率及其行号？

Question

到目前为止，我的 Java 代码如下所示。现在我要做的是添加到它，以便它可以报告列表中每个单词的频率（它存在的次数）以及该单词出现的行号。

代码：

// Concordance

import java.util.*;

// A concordance is a listing of words from a text, with each word being followed the line/page numbers on which the word appears. 

public class Concordance 
{

    private Dictionary dict = new Hashtable();

    private boolean allowDupl = true;

    public Concordance (boolean allowDupl ) 
    {
        this.allowDupl = allowDupl;
    } // end Concordance()

    public Concordance ( ) { this(true); }

    public void enterWord (Object word, Integer line) 
    {
        Vector set = (Vector) dict.get(word);
        if (set == null) // word not in dictionary
        {  
        set = new Vector( );
        dict.put(word, set);  // enter word and empty Vector
        } 
        if (allowDupl || !set.contains(line))
        { 
        set.addElement(line);
        }
    } // end enterWord()

    public Enumeration keys( ) 
    {
        return dict.keys( );
    } // end keys()

    public Enumeration getNumbers (Object word) 
    {
        return ((Vector)dict.get(word)).elements( );
    } // end getNumbers()

} // end class Concordance

这是我一直在尝试的东西，但 Java 根本不是我的强语言。任何人都可以提供有关如何进行的建议吗？

编辑：

我已使用以下内容更新了我的代码。对于那些更熟悉 Java 的人来说，这看起来是否正确？

代码：

// Concordance

import java.util.*;

// A concordance is a listing of words from a text, with each word being followed the line/page numbers on which the word appears. 

public class Concordance 
{

    private Dictionary dict = new Hashtable();

    private boolean allowDupl = true;

    public Concordance (boolean allowDupl ) 
    {
        this.allowDupl = allowDupl;
    } // end Concordance()

    public Concordance ( ) { this(true); }

    public void enterWord (Object word, Integer line) 
    {
        Vector set = (Vector) dict.get(word);
        if (set == null)  // word not in dictionary
        {
        set = new Vector( );
        dict.put(word, set);  // enter word and empty Vector
        } 
        if (allowDupl || !set.contains(line)) 
        {
        set.addElement(line);
        }
    } // end enterWord()


    public void generateOutput(PrintStream output) 
    {
        Enumeration e = dict.keys();
        while (e.hasMoreElements()) 
        {
            String word = (String) e.nextElement();
            Vector set = (Vector) dict.get(word);
            output.print(word + ": ");
            Enumeration f = set.elements();
        }
        while (f.hasMoreElements())
        {
            output.print(f.nextElement() + " ");
            output.println("");
        }
    }

    public Enumeration keys( ) 
    {
        return dict.keys( );
    } // end keys()

    public Enumeration getNumbers (Object word) 
    {
        return ((Vector)dict.get(word)).elements( );
    } // end getNumbers()

} // end class Concordance

Answer 1

创建一个类DictionaryEntry，它具有您需要的所有属性，然后将其放入您的Dictionary 而不是一组int 作为行号。