How do we split words from a html file using string manipulations in java?

Question

I need to create a method that reads a html file then display the number of word occurrence.

for example: String [] words = {"happy", "nice", "good"};

The word happy was used 7 times. The word nice was used 1 times. The word happy was used 2 times.

This is what I did:

public static void ReadWriteDisplay() {
    
 Path in = Paths.get("E:\TextToHTML.html");
 Path out = Paths.get("E:\HTMLToText.txt");
 String s = "";
 String str = "";
 try {
    InputStream input = new BufferedInputStream(Files.newInputStream(in));
    BufferedReader reader = new BufferedReader(new InputStreamReader(input));
        
    OutputStream output = new BufferedOutputStream(Files.newOutputStream(out, CREATE, WRITE, TRUNCATE_EXISTING));
    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(output));
        
    s = reader.readLine();
    while(s != null) {
      str += s;
      writer.write(s);
      writer.newLine();
      s = reader.readLine();
    }
reader.close();
writer.close();
        
String a[] = str.split(" ");
System.out.println("str: "+str);
String [] positive = {"happy", "nice", "good", "joy", "love"};
int [] count = {0, 0, 0, 0, 0};
for (int i = 0; i < a.length; i++) {
    if(positive[0].equalsIgnoreCase(a[i]))
                count[0]++;
    if(positive[1].equalsIgnoreCase(a[i]))
                count[1]++;
    if(positive[2].equalsIgnoreCase(a[i]))
                count[2]++;
    if(positive[3].equalsIgnoreCase(a[i]))
                count[3]++;
    if(positive[4].equalsIgnoreCase(a[i]))
                count[4]++;
}
        
for (int x = 0; x < 5; x++) {
    System.out.println("The word "+positive[x]+" was used "+count[x]+" times.");
}
        
} catch(Exception e) {
    System.err.println("Message: "+ e);
  } 
}

My method runs but it does not provide accurate number of occurrence. The reason because some words in html are enclosed in <> which caused <>Hello<> to be stored in my string array instead of the word Hello.

Here is the sample output:

str:                             JustPaste.it - Share Text & Images the Easy Way                                                                                                                                                                                                                         
                                                
        
                    
        
    
                                                    
                happy
 nice nice
 good good good
 joy Joy joy Joy joy
 Love love Love love Love
    
            
    
            
        
    
 
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    The word happy was used 0 times.
    The word nice was used 0 times.
    The word good was used 1 times.
    The word joy was used 3 times.
    The word love was used 3 times.

How do I properly split or count the number of occurrence? Thank you!

VijayS · Accepted Answer

This will help you to remove special characters, this will only allow alphabets for example : <>Hello<> will be replaced like Hello

String alphaOnly = input.replaceAll("[^a-zA-Z]+","");

How do we split words from a html file using string manipulations in java?

Answers (2)

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