package text6;

import java.util.*;
import java.io.File;
import java.io.FileReader;

import javax.swing.JOptionPane;

class tongji {
   public static void main( String[ ] args ) throws Exception {
	   String str = JOptionPane.showInputDialog("請輸入字串(例如:text6.txt)：");
	   File file = new File(str);
       FileReader reader = new FileReader(file);
       int length = (int)file.length();
       char[] chars = new char[length];
       reader.read(chars);
       reader.close();
       String s = String.valueOf(chars);
       
       int count = 0;
       int n = chars.length;
       for(int i = 0; i < n ; i++)
       {
    	   if(chars[i] >= 'a' && chars[i] <= 'z')
    	   {
    		   count ++;
    	   }
       }
	   
       String[ ] words = s.replaceAll( "[^a-zA-Z]+", " " ).trim( ).split( " " );

       if ( words.length > 0 ) {
           TreeSet<Integer> lengths = new TreeSet<Integer>( ); 

           for ( String word: words )
               lengths.add( word.length( ) );
           JOptionPane.showMessageDialog(null, "字元數:"+String.valueOf(count) +"\n"+"單詞數:"+String.valueOf(words.length));
       } 
       else 
           JOptionPane.showMessageDialog(null, "字元數:0"+"\n"+"單詞數:0");
   } 
}