import java.awt.*;
import java.awt.event.*;
import java.util.Vector;
import java.io.File;
import java.util.Vector;
class WordStatistic
{ Vector allWorsd,noSameWord;
WordStatistic()
{ allWorsd=new Vector();
noSameWord=new Vector();
}
public void wordStatistic(File file)
{ try{ RandomAccessFile inOne=new RandomAccessFile(file,"rw");//創建指向文件file的inOne 的對象
RandomAccessFile inTwo=new RandomAccessFile(file,"rw"); //創建指向文件file的inTwo 的對象
long wordStarPostion=0,wordEndPostion=0;
long length=inOne.length();
int flag=1;
int c=-1;
for(int k=0;k<=length;k++)
{ c=inOne.read(); // inOne調用read()方法
boolean boo=(c<='Z'&&c>='A')||(c<='z'&&c>='a');
if(boo)
{ if(flag==1)
{ wordStarPostion=inOne.getFilePointer()-1;
flag=0;
}
}
else
{ if(flag==0)
{
if(c==-1)
wordEndPostion=inOne.getFilePointer();
else
wordEndPostion=inOne.getFilePointer()-1;
inTwo.seek(wordStarPostion);// inTwo調用seek方法將讀寫位置移動到wordStarPostion
byte cc[]=new byte[(int)wordEndPostion-(int)wordStarPostion];
inTwo.readFully(cc); // inTwo調用readFully(byte a)方法，向a傳遞cc
String word=new String(cc);
allWorsd.add(word);
if(!(noSameWord.contains(word)))
noSameWord.add(word);
}
flag=1;
}
}
inOne.close();
inTwo.close();
}
catch(Exception e){}
}
public Vector getAllWorsd()
{ return allWorsd;
}
public Vector getNoSameWord()
{ return noSameWord;
}
}
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,"打開文件話框",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.getAllWorsd();
noSameWord=statistic.getNoSameWord();
showMessage.append("\n"+fileName+"中有"+allWord.size()+"個英文單詞");
showMessage.append("\n其中有"+noSameWord.size()+"個互不相同英文單詞");
showMessage.append("\n按使用頻率排列：\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());
}
}
}
}
public class sy6_2
{ public static void main(String args[])
{ new StatisticFrame();
}
}