wordcount.java~2~

小程序

package mypackage;
import java.util.*;
import java.io.*;

public class WordCount {
 public static void main(String[] args) {
   String filename = null;
   double[] b = new double[26];

   int[] a = new int[26];
   for (int i = 0; i < 26; i++) {
     a[i] = 0;
   }
   System.out.println("Enter the file's name");
try{
    BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
   filename=br.readLine();
   }
catch(Exception e){
      System.out.println("Error in reading in");}
//计算频率

    try {
     BufferedReader inputStream = new BufferedReader(new FileReader(filename));
     int letterOfNumber = inputStream.read();

     int count = 1;
     int n = 0;
     while (letterOfNumber != -1) {
       if (letterOfNumber >= 65 & letterOfNumber <= 90) {
         n = letterOfNumber - 65;
         a[n] = a[n] + 1;
       }
       else if (letterOfNumber >= 97 & letterOfNumber <= 122) {
         n = letterOfNumber - 97;
         a[n] = a[n] + 1;
       }
       count++;
       letterOfNumber = inputStream.read();
     }
   //显示输出
     System.out.println("26个英文字母的出现频率为：");
     for (n = 0; n < 26; n++) {
       b[n] = (double) (a[n] * 100) / count;
       System.out.println( (char) (n + 97) + ":" + b[n] + "%");
     }
     inputStream.close();


         }
         catch (FileNotFoundException e) {
           System.out.println("Errors123");
         }
         catch (IOException e) {
           System.out.println("Errors");
         }

//查单词the出现的次数*******************************************
int nn=0;
try {
     BufferedReader inputStream2 = new BufferedReader(new FileReader(filename));
     String line = inputStream2.readLine();
     int m=0;
     while(line!=null)
   {
       StringTokenizer wordFinder=new StringTokenizer(line," /n.,;!?//");
        while(wordFinder.hasMoreTokens())
       {String an=wordFinder.nextToken();
          if((an.toLowerCase()).equals("the"))
             { m=m+1;}
       nn++;
           }
        line=inputStream2.readLine();
   }
     System.out.println("单词the出现的次数为"+m);
      System.out.println(nn);
     inputStream2.close();
 }
  catch (FileNotFoundException e) {
        System.out.println("Errors123");
      }
  catch (IOException e) {
        System.out.println("Errors");
   }

//统计各单词出现次数*************************************************
try {
  BufferedReader inputStream3 = new BufferedReader(new FileReader(filename));
 String line3=null;

 String[] word=new String[nn];
 int[] wordCount=new int[nn];
 for(int i=0;i<nn;i++)
   wordCount[i]=0;
 line3=inputStream3.readLine();
 int i=0;
 int mm=0;
 while(line3!=null)
 {StringTokenizer wordFinder3=new StringTokenizer(line3," /n.,;!?//");
   while(wordFinder3.hasMoreTokens())
   {String an=wordFinder3.nextToken();
     for(int j=0;j<i;j++)
   {if(word[j]==an)
      { wordCount[j]=wordCount[j]+1;
  mm--;
      }
       }
    if(mm==i)
        { word[i]=an ;
         wordCount[i]=wordCount[i]+1;

       i++;}
      mm=i; }
     line3=inputStream3.readLine();
     }
int nnn=i;
System.out.println(nnn);
inputStream3.close();
//显示输出
System.out.println("各个单词的出现次数为：");
for(int j=0;j<nn;j++)
       System.out.println(word[j]+wordCount[j]);

}
 catch (FileNotFoundException e) {
          System.out.println("Errors123");
        }
    catch (IOException e) {
          System.out.println("Errors");
     }
 }
}