单词统计排序输出（java的GUI实现）

import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.util.*; class TextStats extends JFrame { public static void main(String[] args) { new TextStats(); } public TextStats() { final TextArea text = new TextArea("", 40, 50, TextArea.SCROLLBARS_VERTICAL_ONLY), stats = new TextArea(40, 50); text.addTextListener(new TextListener() { public void textValueChanged(TextEvent e) { String[] words = text.getText().toLowerCase().split( "[\\W&&[^'-]]+"); Map<String, Integer> count = new TreeMap<String, Integer>(); for (String word : words) if (word.length() > 0) count.put(word, count.containsKey(word) ? count .get(word) + 1 : 1); stats.setText(count.toString().replaceAll("[{}]|, ", "\n") .trim()); } }); add(text); add(stats, BorderLayout.EAST); stats.setEditable(false); setTitle("单词排序与统计"); pack(); setDefaultCloseOperation(EXIT_ON_CLOSE); setVisible(true); } }