statisticframe.java

用JAVA编写的有关统计的应用

import java.awt.*;
import java.awt.event.*;
import java.util.Vector;
import java.io.File;
public class StatisticFrame extends Frame implements ActionListener
{
	WordStatistic statistic;
	TextArea showMessage;
	Button openFile;
	FileDialog openFileDialog;
	Vector allWord,noSameWord;
	public StatisticFrame()
	{
		statistic=new WordStatistic();
		showMessage=new TextArea();
		openFile=new Button("Open File");
		openFile.addActionListener(this);
		add(openFile,BorderLayout.NORTH);
		add(showMessage,BorderLayout.CENTER);
		openFileDialog=new FileDialog(this,"打开文件话框",FileDialog.LOAD);
		allWord=new Vector();
		noSameWord=new Vector();
		setSize(350,300);
		setVisible(true);
		addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		});
		validate();
	}
	public void actionPerformed(ActionEvent e)
	{
		noSameWord.clear();
		allWord.clear();
		showMessage.setText(null);
		openFileDialog.setVisible(true);
		String fileName=openFileDialog.getFile();
		if(fileName!=null)
		{
			statistic.wordStatistic(new File(fileName));
			allWord=statistic.getAllWords();
			noSameWord=statistic.getNoSameWord();
			showMessage.append("\n"+fileName+"中有"+allWord.size()+"个英文单词");
            showMessage.append("\n其中有"+noSameWord.size()+"个互不相同的英文单词");
            showMessage.append("\n按使用频率排列：\n");
            int count[]=new int[noSameWord.size()];
            for(int i=0;i<noSameWord.size();i++)
            {
				String s1=(String)noSameWord.elementAt(i);
				for(int j=0;j<allWord.size();j++)
				{
					String s2=(String)allWord.elementAt(j);
					if(s1.equals(s2))
					count[i]++;
					}
		     }
            for(int m=0;m<noSameWord.size();m++)
            {
				for(int n=m+1;n<noSameWord.size();n++)
				{
					if(count[n]>count[m])
					{
						String temp=(String)noSameWord.elementAt(m);
						noSameWord.setElementAt((String)noSameWord.elementAt(n),m);
						noSameWord.setElementAt(temp,n);
						int t=count[m];
						count[m]=count[n];
						count[n]=t;
					 }
			     }
			 }
             for(int m=0;m<noSameWord.size();m++)
             {
				 showMessage.append("\n"+(String)noSameWord.elementAt(m)+
				                     ":"+count[m]+"/"+allWord.size()+
				                     "="+(1.0*count[m])/allWord.size());
              }
			}
		}
	}