i have written the following code to count the number of character excluding white spaces,count number of words,count number of lines.But my code is not showing proper output.
import java.io.*;
class FileCount
{
public static void main(String args[]) throws Exception
{
FileInputStream file=new FileInputStream("sample.txt");
BufferedReader br=new BufferedReader(new InputStreamReader(file));
int i;
int countw=0,countl=0,countc=0;
do
{
i=br.read();
if((char)i==(' '))
countw++;
else if((char)i==('\n'))
countl++;
else
countc++;
}while(i!=-1);
System.out.println("Number of words:"+countw);
System.out.println("Number of lines:"+countl);
System.out.println("Number of characters:"+countc);
}
}
my file sample.txt has
hi my name is john
hey whts up
and my out put is
Number of words:6
Number of lines:2
Number of characters:26
You need to discard other whitespace characters as well including repeats, if any. A split
around \\\\s+
gives you words separated by not only all whitespace characters but also any appearance of those characters in succession.
Having got a list of all words in the line
it gets easier to update the count of words and characters using length methods of array and String
.
Something like this will give you the result:
String line = null;
String[] words = null;
while ((line = br.readLine()) != null) {
countl++;
words = line.split("\\s+");
countw += words.length;
for (String word : words) {
countc += word.length();
}
}
A new line means also that the words ends. => There is not always a ' ' after each word.
do
{
i=br.read();
if((char)i==(' '))
countw++;
else if((char)i==('\n')){
countl++;
countw++; // new line means also end of word
}
else
countc++;
}while(i!=-1);
End of file should also increase the number of words (if no ' ' of '\\n' was the last character. Also handling of more than one space between words is still not handled correctly.
=> You should think about more changes in your approach to handle this.
import java.io.*;
class FileCount {
public static void main(String args[]) throws Exception {
FileInputStream file = new FileInputStream("sample.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(file));
int i;
int countw = 0, countl = 0, countc = 0;
do {
i = br.read();
if ((char) i == (' ')) { // You should also check for other delimiters, such as tabs, etc.
countw++;
}
if ((char) i == ('\n')) { // This is for linux Windows should be different
countw++; // Newlines also delimit words
countl++;
} // Removed else. Newlines and spaces are also characters
if (i != -1) {
countc++; // Don't count EOF as character
}
} while (i != -1);
System.out.println("Number of words " + countw);
System.out.println("Number of lines " + countl); // Print lines instead of words
System.out.println("Number of characters " + countc);
}
}
Ouput:
Number of words 8
Number of lines 2
Number of characters 31
Validation
$ wc sample.txt
2 8 31 sample.txt
Try this:
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
public class FileCount {
/**
*
* @param filename
* @return three-dimensional int array. Index 0 is number of lines
* index 1 is number of words, index 2 is number of characters
* (excluding newlines)
*/
public static int[] getStats(String filename) throws IOException {
FileInputStream file = new FileInputStream(filename);
BufferedReader br = new BufferedReader(new InputStreamReader(file));
int[] stats = new int[3];
String line;
while ((line = br.readLine()) != null) {
stats[0]++;
stats[1] += line.split(" ").length;
stats[2] += line.length();
}
return stats;
}
public static void main(String[] args) {
int[] stats = new int[3];
try {
stats = getStats("sample.txt");
} catch (IOException e) {
System.err.println(e.toString());
}
System.out.println("Number of words:" + stats[1]);
System.out.println("Number of lines:" + stats[0]);
System.out.println("Number of characters:" + stats[2]);
}
}
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