这是我的字典格式：
词频
走了60
去 10
去 30
到目前为止，系统会返回单词，例如以“g”开头的 go30、gos10、goone60 作为列表。（按字母顺序）。我想提高系统的准确性，以便搜索结果基于频率。高频词首先出现。请帮助。
这是逐行读取字典的 Text midlet 类。
public class Text extends MIDlet {
// Fields
private static final String[] DEFAULT_KEY_CODES = {
// 1
".,?!'\"1-()@/:_",
// 2
"ABC2",
// 3
"DEF3",
// 4
"GHI4",
// 5
"JKL5",
// 6
"MNO6",
// 7
"PQRS7",
// 8
"TUV8",
// 9
"WXYZ9",
};
//Initializing inner Classes
public ComposeText() {
cmdHandler = new CommandHandler();
lineVector = new Vector();
}
//Calling All InitMethods, setting Theme, Show MainForm
public void startApp() {
Display.init(this);
setTheme();
initCmd();
initMainGui();
mainFrm.show();
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
//Initializing all the Commands
public void initCmd() {
exitCmd = new Command("Exit");
selectCmd = new Command("Ok");
cancelCmd = new Command("Cancel");
predCmd = new Command("Prediction");
sendCmd = new Command("Send");
tfPredArea = new TextField();
//check dictionary
try {
readFile();
} catch (IOException ex) {
ex.printStackTrace();
}
}
//Initiating MainScreen
public void initMainGui() {
mainFrm = new Form("Compose Text");
mainFrm.setLayout(new BorderLayout());
mainFrm.setLayout(new CoordinateLayout(150, 150));
mainFrm.addCommand(exitCmd);
mainFrm.addCommand(predCmd);
mainFrm.addCommand(sendCmd);
mainFrm.addCommandListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
if(ae.getSource() == predCmd){
initPredGui();
} else if(ae.getSource() == exitCmd){
destroyApp(true);
notifyDestroyed();
}
}
});
// To : 07xxxxxxxxxx
Dimension d1 = new Dimension(130, 20);
lbTo = new Label("To:");
lbTo.setX(10);
lbTo.setY(10);
tfTo = new TextField();
tfTo.setReplaceMenu(false);
tfTo.setConstraint(TextField.NUMERIC);
tfTo.setInputModeOrder(new String[]{"123"});
tfTo.setMaxSize(13);
tfTo.setX(40);
tfTo.setY(10);
tfTo.setPreferredSize(d1);
//Message : Compose Text
Dimension d2 = new Dimension(135, 135);
lbSms = new Label("Message:");
lbSms.setX(5);
lbSms.setY(40);
tfSms = new TextField();
tfSms.setReplaceMenu(false);
tfSms.setX(40);
tfSms.setY(40);
tfSms.setPreferredSize(d2);
//add stuff
mainFrm.addComponent(lbTo);
mainFrm.addComponent(lbSms);
mainFrm.addComponent(tfTo);
mainFrm.addComponent(tfSms);
}
//Initiating FilterSelection Screen
public void initPredGui() {
predForm = new Form("Prediction on");
predForm.setLayout(new CoordinateLayout(150, 150));
predForm.addCommand(cancelCmd);
predForm.addCommand(selectCmd);
//textfied in prediction form
final Dimension d5 = new Dimension(200, 200);
tfPredArea = new TextField();
tfPredArea.setReplaceMenu(false);
tfPredArea.setX(10);
tfPredArea.setY(10);
tfPredArea.setPreferredSize(d5);
predForm.addComponent(tfPredArea);
final ListModel underlyingModel = new DefaultListModel(lineVector);
// final ListModel underlyingModel = new
DefaultListModel(tree.getAllPrefixMatches(avail));
// this is a list model that can narrow down the underlying model
final SortListModel proxyModel = new SortListModel(underlyingModel);
final List suggestion = new List(proxyModel);
tfPredArea.addDataChangeListener(new DataChangedListener() {
public void dataChanged(int type, int index) {
int len = 0;
int i = 0;
String input = tfPredArea.getText();
len = tfPredArea.getText().length();
//ensure start search character is set for each word
if (!(len == 0)) {
for (i = 0; i < len; i++) {
if (input.charAt(i) == ' ') {
k = i;
}
}
String currentInput = input.substring(k + 1, len);
proxyModel.filter(currentInput);
}
}
});
Dimension d3 = new Dimension(110, 120);
suggestion.setX(80);
suggestion.setY(80);
suggestion.setPreferredSize(d3);
predForm.addComponent(suggestion);
suggestion.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
String string = suggestion.getSelectedItem().toString();
if (tfPredArea.getText().charAt(0) == 0) {
tfPredArea.setText(string);
}
else if (tfPredArea.getText().length() == 0) {
tfPredArea.setText(string);
} else {
tfPredArea.setText(tfPredArea.getText() + string);
}
}
});
predForm.addCommandListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
if (ae.getSource() == addCmd) {
newDictionaryFrm.show();
} else {
mainFrm.show();
}
}
});
predForm.show();
}
//Setting Theme for All Forms
public void setTheme() {
try {
Resources r = Resources.open("/theme.res");
UIManager.getInstance().setThemeProps(r.getTheme(
r.getThemeResourceNames()[0]));
} catch (java.io.IOException e) {
System.err.println("Couldn't load the theme");
}
}
//Inner class CommandHandler
public class CommandHandler implements ActionListener {
public void actionPerformed(ActionEvent ae) {
//cancelCommand from predictionForm
if (ae.getSource() == cancelCmd) {
if (edit) {
mainFrm.show();
// clearFields();
} else if (ae.getSource() == selectCmd){
tfPredList.addDataChangeListener(model);
predForm.show();
}
else{}
}
}
}
// method that reads dictionary line by line
public void readFile() throws IOException {
tree = new Trie();
InputStreamReader reader = new InputStreamReader(
getClass().getResourceAsStream("/Maa Corpus.txt-01-ngrams-Alpha.txt"));
String line = null;
// Read a single line from the file. null represents the EOF.
while ((line = readLine(reader)) != null) {
// Append to a vector to be used as a list
lineVector.addElement(line);
}
}
public String readLine(InputStreamReader reader) throws IOException {
// Test whether the end of file has been reached. If so, return null.
int readChar = reader.read();
if (readChar == -1) {
return null;
}
StringBuffer string = new StringBuffer("");
// Read until end of file or new line
while (readChar != -1 && readChar != '\n') {
// Append the read character to the string.
// This is part of the newline character
if (readChar != '\r') {
string.append((char) readChar);
}
// Read the next character
readChar = reader.read();
}
return string.toString();
}
}
}
SortListModel 类具有从文本字段 datachangeLister 获取前缀的过滤器方法
class SortListModel implements ListModel, DataChangedListener {
private ListModel underlying;
private Vector filter;
private Vector listeners = new Vector();
public SortListModel(ListModel underlying) {
this.underlying = underlying;
underlying.addDataChangedListener(this);
}
private int getFilterOffset(int index) {
if(filter == null) {
return index;
}
if(filter.size() > index) {
return ((Integer)filter.elementAt(index)).intValue();
}
return -1;
}
private int getUnderlyingOffset(int index) {
if(filter == null) {
return index;
}
return filter.indexOf(new Integer(index));
}
public void filter(String str) {
filter = new Vector();
str = str.toUpperCase();
for(int iter = 0 ; iter < underlying.getSize() ; iter++) {
String element = (String)underlying.getItemAt(iter);
if(element.toUpperCase().startsWith(str)) // suggest only if smthing
{
filter.addElement(new Integer(iter));
}
}
dataChanged(DataChangedListener.CHANGED, -1);
}
public Object getItemAt(int index) {
return underlying.getItemAt(getFilterOffset(index));
}
public int getSize() {
if(filter == null) {
return underlying.getSize();
}
return filter.size();
}
public int getSelectedIndex() {
return Math.max(0, getUnderlyingOffset(underlying.getSelectedIndex()));
}
public void setSelectedIndex(int index) {
underlying.setSelectedIndex(getFilterOffset(index));
}
public void addDataChangedListener(DataChangedListener l) {
listeners.addElement(l);
}
public void removeDataChangedListener(DataChangedListener l) {
listeners.removeElement(l);
}
public void addSelectionListener(SelectionListener l) {
underlying.addSelectionListener(l);
}
public void removeSelectionListener(SelectionListener l) {
underlying.removeSelectionListener(l);
}
public void addItem(Object item) {
underlying.addItem(item);
}
public void removeItem(int index) {
underlying.removeItem(index);
}
public void dataChanged(int type, int index) {
if(index > -1) {
index = getUnderlyingOffset(index);
if(index < 0) {
return;
}
}
for(int iter = 0 ; iter < listeners.size() ; iter++) {
((DataChangedListener)listeners.elementAt(iter)).dataChanged(type, index);
}
}
}