CareerCup

FileReader fr = new FileReader("file.txt");
			
			BufferedReader br = new BufferedReader(fr);
			String line;
			int total_no_of_words = 0;
			
			while((line=br.readLine())!=null)
			{		
				System.out.println("Read line" + line);
				String[] words_arr = line.split(" ");
				total_no_of_words += words_arr.length;

			}
			System.out.println("Total no of words = " + total_no_of_words);

import java.io.*;
import java.util.regex.*;
class Count
{
public static void main(String args[]) throws Exception
{
FileReader fr=new FileReader("File7");
BufferedReader br =new BufferedReader(fr);
String str=null;
int count=0;
while((str=br.readLine())!=null)
{
Pattern pat=Pattern.compile("[ ]");
String str1[]=pat.split(str);
count=count+str1.length;
}
System.out.println("the no of words in the file are "+count);
}
}

public static int countWord(String sline){
int count=0;
char [] ch=sline.toCharArray();
boolean bFound=true;

for (int i=0;i<ch.length;++i){
if (ch[i]!=' '&&bFound){
count++;
bFound=false;
}else if (ch[i]==' '){
bFound=true;
}
}
return count;
}

import java.io.*;
import java.util.regex.*;

class NumberOfWords {
public static void main(String args[]) throws Exception {
FileReader fr = new FileReader("File7.txt");
BufferedReader br = new BufferedReader(fr);
String str = null;
int count = 0;
while ((str = br.readLine()) != null) {
Pattern pat = Pattern.compile("[ ,.,,,;]");
String str1[] = pat.split(str);
count = count + str1.length;
}
System.out.println("the no of words in the file are " + count);
br.close();
}
}

how to execute this program?

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