Find Unique And Frequent words of Input any file ~ DevelopersTpoint

Thursday, 23 January 2014

Find Unique And Frequent words of Input any file

package com.developerstpoint.jeetendra;

import java.io.*;  
import java.util.*;  
class ToFindOutUniqueAndFrequentWords {  
  public static void main(String[] unused) {  
    Scanner in = new Scanner(System.in); // scanner object.   
     int awords=0,uwords=0;   
     try{  
          System.out.println("Enter your file name");  
          File inputfile = new File(in.nextLine());  
          Scanner words = new Scanner(inputfile);   
          words.useDelimiter("[^A-Za-z]+");  
          HashMap<String,Integer> words_fre = new HashMap<String,Integer>();  
          while(words.hasNext())  
               {  
                    String s = words.next().toString();   
                    awords++; // words count   
                    if(words_fre.containsKey(s))  
                         {  
                              int a = words_fre.get(s);  
                              words_fre.put(s,a+1);             
                         }  
                    else {  
                         words_fre.put(s,1);  
                         uwords++; // unique words count   
                       }  
               }  
      Object[] key =   words_fre.keySet().toArray();   
      Arrays.sort(key);  
      for (int i = 0; i < key.length; i++) {  
     System.out.println(key[i]+"= "+words_fre.get(key[i]));  
     }

System.out.println("Total Words = "+awords);  
          System.out.println("Unique Words = "+words_fre.size());  
       }catch(IOException e)  
          {  
               System.out.println(e);  
          }  
     }  
}  
/*Enter your file name
D:/JAVAProgram.txt
Important= 1
Java= 1
com= 1
developerstpoint= 1
http= 1
program= 1
Total Words = 6
Unique Words = 6

Content of D:/JAVAProgram.txt is given Below:-

// Important Java program
http://developerstpoint.com/

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Thursday, 23 January 2014