Logical line count

Question

hey yall
I m trying to write myself a program that will count the number of logical lines in a java program. For example, if my input is
ddafa
//daga
daddfa
tab tab tab --tab s meaning white space i ve to skip
eaqr
my program should skip the comments, the white spaces, tabs, newline returns and return me 3.
I ve started thinking and editing and more thinking, and now I'm getting frustrated over how to skip white space.
Also, is there any way to skip white space upto, say a comment, in the middle of the page? Like this
The startsWith("/") didn't work.
Here is my program
  public class LOC   
       public static void main(String[] args)
         String file    = "a";
         int count = 0;
         InputStreamReader input = new InputStreamReader (System.in);
         BufferedReader stdin      = new BufferedReader(input);         
         try
            System.out.println("Enter name of file:> ");     
            file = stdin.readLine();  
            FileReader fr = new FileReader(file);
            BufferedReader in = new BufferedReader(fr); 
            String inputLine = in.readLine();          
            while(inputLine != null)
               while(!inputLine.startsWith("/"))
                  count++;
                           for (int i = 0; i < inputLine.length();  i++)
                              char c = inputLine.charAt(i);
                              if(!Character.isWhitespace(c))
                                 count++;   
        inputLine = in.readLine();  // to exit the e                   
               inputLine = in.readLine();
            }Somebody needs to help please.

Answer 1

Thanks to yall for ur quick and helpful responses. I skimmed thru the java documentation, and yes, trim appeared to be useful in skipping white space.
This is what I have accomplished with the addition of trim. I could not get the tricky slashSlashComment() class to work, so I figured out my own.
but...
Now I have another problem. If my input is all consecutive lines, my program runs fine. Forex, if i have
fdaf
          mofo
I get an answer of 4, which is perfect.
However, if I have one space between the lines, I lose data!
fdaf
dada
dada
     mofo
I get 2 lines.
Could this be due to trim() cutting all the white space between the two lines?
//===========================================================
// LOC.java
// Author: Denem Orhun
// Comp 6700 Software Process
//============================================================
   import java.io.*;
   import java.util.*;
    public class LOC   
       public static void main(String[] args)
         String file    = "a";
         int count = 0;
         char c = ' ';
         InputStreamReader input = new InputStreamReader (System.in);
         BufferedReader stdin      = new BufferedReader(input);         
         try
            System.out.println("Enter name of file:> ");     
            file = stdin.readLine();  
            FileReader fr = new FileReader(file);
            BufferedReader in = new BufferedReader(fr); 
            String inputLine = in.readLine();          
            while(inputLine != null)
               String newString =    inputLine.trim(); //get rid of the white space
               if((newString.length() == 0 || newString.charAt(0) == '/'))
                  inputLine = in.readLine();     
               if(newString.charAt(0) == "/n") 
                  inputLine = in.readLine();              
               else
                  count++; 
               inputLine = in.readLine();  // to exit the while loop                   
            System.out.println(c);
            in.close(); // close the input stream   
            System.out.println("Number of lines " + count);
             catch(FileNotFoundException exception)
               System.out.println("File not found");
             catch (IOException exception)
               System.out.println(exception);
   }I believe I m very close to the solution but I m sure its a very minor error in there. I ve been staring at the screen for lets see, since yall's posts and the screen is starting to blink lol...