package 作业5; import java.awt.; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.; import java.io.File; import java.util.HashMap; import java.util.Scanner; import java.io.File; import java.util.HashMap; import java.util.Scanner; public class Example13_7{ public static void main( String args []){ WindowWord win = new WindowWord(); win.setTitle("英﹣汉小字典"); } } class WindowWord extends JFrame{ JTextField inputText,showText; WordPolice police; public WindowWord(){ setLayout(new FlowLayout()); inputText = new JTextField(6); showText = new JTextField(6); showText.setColumns(15); add(inputText); add(showText); police = new WordPolice(); police.setView(this); inputText.addActionListener(police); setBounds(100,100,400,280); setVisible(true); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } } class WordPolice implements ActionListener { WindowWord view; HashMap<String,String>hashtable; File file = new File ("E:\JAVA\上机\作业5\cet4.txt"); Scanner sc = null ; WordPolice () { hashtable = new HashMap< String,String >(); //System.out.println(hashtable.size()); try { sc = new Scanner ( file ); //System.out.println(sc); while (sc.hasNext ()) { String englishWord = sc . next (); String chineseWord = sc . next (); hashtable . put ( englishWord , chineseWord ); } HashMap<String,String> reversedHashtable = new HashMap<String,String>(); for (String key : hashtable.keySet()) { String value = hashtable.get(key); reversedHashtable.put(value, key); } hashtable.putAll(reversedHashtable); } catch(Exception e ) {} } public void setView(WindowWord view) { this.view = view; } public void actionPerformed(ActionEvent e) { String inputWord = view.inputText.getText (); if(hashtable.containsKey(inputWord)) { String outputWord = hashtable.get ( inputWord ); view.showText.setText (outputWord ); } else { String chineseWord = inputWord; for (String key : hashtable.keySet()) { String value = hashtable.get(key); if (value.equals(chineseWord)) { view.showText.setText(key); return; } } for (String value : hashtable.values()) { if (value.equals(inputWord)) { String outputWord = hashtable.get(value); view.showText.setText(outputWord); return; } } view.showText.setText ("没有此单词"); } } }我在输入框输入“书”，但结果是没有此单词，但是输入“book”，结果是“n.书，书籍”，如何解决，我想实现输入“书”，查出 book n.书；书籍；著作集；选集;簿册;

问题出在程序中对中英文单词进行了反转，导致输入的中文无法匹配到对应的英文单词。你可以尝试修改程序，将反转中英文单词的部分注释掉，这样就可以实现输入中文单词查询对应的英文单词了。具体修改代码如下：

class WordPolice implements ActionListener {
    WindowWord view;
    HashMap<String,String>hashtable;
    File file = new File ("E:\\JAVA\\上机\\作业5\\cet4.txt");
    Scanner sc = null ;

    WordPolice () {
        hashtable = new HashMap< String,String >();
        try {
            sc = new Scanner ( file );
            while (sc.hasNext ()) {
                String englishWord = sc . next ();
                String chineseWord = sc . next ();
                hashtable . put ( englishWord , chineseWord );
            }
            // 将中英文单词反转
//            HashMap<String,String> reversedHashtable = new HashMap<String,String>();
//            for (String key : hashtable.keySet()) {
//                String value = hashtable.get(key);
//                reversedHashtable.put(value, key);
//            }
//            hashtable.putAll(reversedHashtable);
        } catch(Exception e ) {}
    }

    public void setView(WindowWord view) {
        this.view = view;
    }

    public void actionPerformed(ActionEvent e) {
        String inputWord = view.inputText.getText ();
        if(hashtable.containsKey(inputWord)) {
            String outputWord = hashtable.get ( inputWord );
            view.showText.setText (outputWord );
        } else {
            String chineseWord = inputWord;
            // 查找中文单词对应的英文单词
            for (String key : hashtable.keySet()) {
                String value = hashtable.get(key);
                if (value.equals(chineseWord)) {
                    view.showText.setText(key);
                    return;
                }
            }
            view.showText.setText ("没有此单词");
        }
    }
}