我怎样才能得到一个变量来读取一个文件并检查它包含一个单词的次数？

Question

I wanted "szSearch" to read the WORDLIST.txt file and check how many times the user's word appears in the file. So for example,

What word are you searching for? long Searching the file...
The word long appears 24 times in the file WORDLIST.txt.

--- File End ---

public static void main(String[] args) 
{
    //creating scanner objects which  will be used to read in the file
    FileReader file = null;
    BufferedReader br = null;
    
    //declaring variables and assigning values
    Scanner szKeyboard = new Scanner (System.in);
    String szWord = "";
    String szSearch;
    int iCount = 0;
    
    try
    {
        //open the file WORDLIST.txt using the Scanner and File classes
        //File object used to open and store the file
        //Scanner object will be used to read through the file object
        file = new FileReader("WORDLIST.txt");
        
        //needed for methods
        br = new BufferedReader(file);
        
        //ask the user what word they're searching for
        System.out.print("What word are you searching for? ");
        szWord = szKeyboard.nextLine();
        System.out.println("Searching the file...");
        
        szSearch = br.readLine();
        
        //method to count how many times that word occurs in the WORDLIST.txt file
        while (szSearch.contains(szWord))
        {
            iCount = iCount + 1;
        }
        
        System.out.println("The word " + szWord  + " appears " + iCount + " times in the file WORDLIST.txt.");
        
    }//end try
    catch (Exception e)
    {
        System.out.println("Error - Writing to File: " + e);
    }//end catch
    finally
    {
        //close scanner
        szKeyboard.close();

        //finally runs regardless of wheter the try has worked
        //the aim of a finally is to tidy up any loose ends
        //if the contents within read is not equal to nothing i.e. it was possible to open and read
        //close the file (try) if the file was not loaded catch the exception IOException
        try
        {
            br.close();
    `your text` }
        catch(IOException e)
        {
            System.out.println("Error - Closing BufferReader: " + e);
        }

        try
        {
            file.close();
        }
        catch(IOException e)
        {
            System.out.println("Error - closing FileReader: " + e);
        }
        System.out.println("\n\n--- File End ---");
    }//end try catch finally`
    
}//end class

---

This is what I tried doing but when I run it, it says:

What word are you searching for? long Searching the file... The word long appears 0 times in the file WORDLIST.txt.

--- File End ---

Answer 1

Try replacing the while you have with this block of code, it probably requires some tweaking as I didn't test the code, but the logic I think solves it.

while ((strCurrentLine = objReader.readLine ())! = null) {
    List<String> words = Arrays.asList(strCurrentLine.split(" "));
    iCount += words.stream().hasMatch(w -> w.equals(szWord)).count();
}