Die Absätze werden falsch gezählt

Question

Also möchte ich, dass mein Programm die Anzahl der Absätze aus einer Textdatei zählt, aber leider beende ich 1 Nummer aus. Ich brauche die Antwort von 4, wenn ich 5. Hier werden immer ist der Text:

Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in 
Liberty, and dedicated to the proposition that all men are created equal. 

Now we are engaged in a great civil war, testing whether that nation, or any nation so conceived and so 
dedicated, can long endure. We are met on a great battle-field of that war. We have come to dedicate a 
portion of that field, as a final resting place for those who here gave their lives that that nation might 
live. It is altogether fitting and proper that we should do this. 

But, in a larger sense, we can not dedicate -- we can not consecrate -- we can not hallow -- this ground. 
The brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add 
or detract. The world will little note, nor long remember what we say here, but it can never forget 
what they did here. It is for us the living, rather, to be dedicated here to the unfinished work which 
they who fought here have thus far so nobly advanced. It is rather for us to be here dedicated to the great 
task remaining before us -- that from these honored dead we take increased devotion to that cause for which 
they gave the last full measure of devotion -- that we here highly resolve that these dead shall not have 
died in vain -- that this nation, under God, shall have a new birth of freedom -- and that government of 
the people, by the people, for the people, shall not perish from the earth. 



Abraham Lincoln 
November 19, 1863  

Und hier ist mein Code:

public static void main(String[] args) { 
    String input; 
    Scanner kbd = new Scanner(System.in); 
    System.out.print("Enter the name of the input file: "); 
    input = kbd.nextLine(); 
    try 
    { 
     // Set up connection to the input file 
     Scanner input1 = new Scanner(new FileReader(input)); 

     // Set up connection to an output file 
     PrintWriter output=newPrintWriter(newFileOutputStream(input".txt")); 

     // initialize the counter for the line numbers 
     int lineNum = 0; 
     int words = 0; 
     int characters = 0; 
     int paragraphs = 0; 
     // as long as there are more lines left in the input file 
     // read from the input file, and copy to the output file 
     while (input1.hasNextLine()) 
      { 
     // read a line from the input file 
     String line; 

     line = input1.nextLine(); 
     // copy the line to the output file, adding a 
     // line number at the front of the line 
     output.println(line + "\n"); 
     // increment the line counter 
     lineNum++; 
     //Section for counting the words 
     boolean word = false; 
      for (int i = 0; i < line.length(); i++) { 
       //checks for letters and counts as word till it finds a space then checks for a letter again. 
       if (!Character.isWhitespace(line.charAt(i)) && !word) { 

        words++; 
        word = true; 
       } 
       else if (Character.isWhitespace(line.charAt(i)) && word){ 
        word = false; 

       } 
      } 
      characters += line.length(); 
      paragraphs += getPara(line); 
      } 


     // close the files 
     input1.close(); 
     output.close(); 
     System.out.println("Lines: " + lineNum); 
     System.out.println("Words: " + words); 
     System.out.println("Characters: " + ((characters))); 
     System.out.println("Paragraphs: " + paragraphs); 



    } 
    catch(FileNotFoundException e) 
    { 
     System.out.println("There was an error opening one of the files."); 
    } 

} 

public static int getPara(String line){ 
    int count = 0; 
    boolean p = false; 

    if (line.isEmpty() && !p){ 
     count++; 
     p = true; 
    } 
    else if (!line.isEmpty() && p){ 
     p = false; 
    } 

    return count; 
} 

} 

Answer 1

Ihr Code zählt leere Zeilen statt Absätze. Leere Zeilen in der Eingabedatei werden zur Anzahl der Absätze hinzugefügt.

Annahmen und Definitionen sind der Schlüssel in solchen Fällen. Wie ist ein Absatz in Ihrer Anforderungsdokumentation definiert? Können Sie davon ausgehen, dass es sich bei den Absätzen um eine einzelne Zeile handelt, die durch einen Zeilenumbruch terminiert wird, oder müssen Sie Zeilenumbrüche in Absätzen berücksichtigen? Wenn es ersteres ist, werden alle nicht leeren Zeilen, die von nextLine() zurückgegeben werden, Absätze sein. Wenn es sich um Letzteres handelt, müssen Sie die Absatzanzahl nur erhöhen, wenn eine leere Zeile oder EOF auf eine nicht leere Zeile folgt.

In jedem Fall werden Sie besser bedient mit Sprache Dienstprogramme wie String.split(), um Ihre Wörter zu zählen, es sei denn, Sie müssen es manuell tun.