Reading a file from a directory.

[Arjun Srivastava]

import java.io.*;
import java.io.FileReader;
import java.io.PrintWriter;
public class fileio {
	public static void main(String[] args){
		try{
			File f=new File("c:\\");
			File list[]=new File[60];
			list=f.listFiles();
			for(File s1 : list)
				System.out.println(s1);
			int j=list.length;  
			for(File s1 : list)
				if(s1.toString()=="c:\\myfile.txt" || s1.toString()=="myfile.txt")
				{
					File file=new File("myfile.txt");
					FileReader fr=new FileReader(s1);
					BufferedReader br=new BufferedReader(fr);  
					String s;
					if((s=br.readLine())!=null)
						System.out.println(s);
					br.close();}
				else continue;
		}
		catch(Exception e){
			e.printStackTrace();
		}
	}
}

Hi all,i am trying to read from directory containing other files too.
It has listed the directory and files inside the parent directory. But i am not able to read the file which i want.
Please any suggestions!

[Paul Clapham]

Well, first of all you shouldn't use == to compare the contents of two strings for equality. That just tests to see if the two strings are the same object. You should use the equals method:

if (answer.equals("Hello World")) ...

And secondly your code (at line 16) appears to assume that your current working directory has a file named "myfile.txt" in it. I'm not sure why you have all of that code looking through files in directories and then you just ignore everything that code did.

[Arjun Srivastava]

import java.io.*;
public class fileio {
	public int count(String filename) throws IOException {
	    InputStream is = new BufferedInputStream(new FileInputStream(filename));
	    try {
	        byte[] c = new byte[1024];
	        int count = 0;
	        int readChars = 0;
	        while ((readChars = is.read(c)) != -1) {
	            for (int i = 0; i < readChars; ++i) {
	                if (c[i] == '\n')
	                    ++count;
	            }
	        }
	        return count;
	    } finally {
	        is.close();
	    }
	}
	public static void main(String[] args){
		try{
			File f=new File("c:\\");
			File list[]=new File[60];
			list=f.listFiles();
			int j=list.length;  
			int lines=new fileio().count("c:\\cover letter.txt");
			for(File s1 : list)
				if(s1.toString().equals("c:\\cover letter.txt"))
				{
					BufferedReader br=new BufferedReader(new FileReader(s1));  
					String s;
					for(int i=0;i<=lines;i++){
					if((s=br.readLine())!=null)
						System.out.println(s);
					else continue ;}
					br.close();}
				else continue;
		}
		catch(Exception e){
			e.printStackTrace();
		}
	}
}

Thanks paul. Yeah,putting line 16 doesn't make any sense.
Actually i have twisted this code many times just for the sake of trying,so forgot to remove it.
Now this is happening and seems perfect,reading every single line of a file.