Reading certain HTML lines

[RENO9]

Im using the code below to start reading a URL at line 300 but i would like it to stop reading at line 360, as im a java novice could you indicate where im going wrong, every seems ok (i.e. starts at 300) but it does not stop at the required point?

import java.net.*;
import java.io.*;
import java.util.StringTokenizer;
 
public class NetFile
{
  public static void main(String args[])
  {
    String data;
    DataInputStream file = null;
    int post = 300;		//Starting line
    String url = "[URL unfurl="true"]http://www.javaworld.com/columns/jw-tips-index.shtml";[/URL] //Example
    
    try
    {
      file = new DataInputStream((new URL(url)).openStream());
      data = file.readLine();
      
      while (data != null)
      {
        for(int x = 0; x < 360;)
        {
           while(x >= post)
            {
              System.out.println(data);
              data=file.readLine();
              StringTokenizer st = new StringTokenizer(data);
              while(st.hasMoreElements())
              {
                String s = st.nextToken();
                System.out.print(x + "\t" + s);
                for(double j = 0; j < 1000000; j++) {}  //Readable output
              }
              x++;
            }
            data=file.readLine();
          x++;  
        }
      }
      
    }
    catch(IOException e)
    {
      System.out.println("Error : " + e);
    }
  }
}

Any suggestions where im going wrong?
Thanks

 

[wangdong]

for(int x = 0; x < 360 ????

for(int x = 0; x < 360;x++)

Chinese Java Faq Forum

http://www.4ugo.com/bbs/index.asp

 

[thumpkidd9]

Can u still use DataInputStream? I thought that was deprecated. And where are you closing the stream at?

~mp

 

[thumpkidd9]

After looking at it further, your problem has to do with the while loop

while(x >= post) {. . . }

You are going in an infinite loop that loops while x is greater than 300. you could get rid of whole for loop, and just have

while (data != null) {
    int x = post;
    while(x >= post && x < 360) {. . .}
}

this will loop between 300 and 360

~mp

 

[stefanwagner]

@thumpkidd9:
It will not, since he likes to skip the first 300 lines.
How's about that:

while (data != null)
{
	for (int x = 0; x < 360; ++x)
	{
		data=file.readLine ();
		if (x >= post)
		{
			System.out.println (data);
			StringTokenizer st = new StringTokenizer (data);
			while (st.hasMoreElements ())
			{
				String s = st.nextToken ();
				System.out.print (x + "\t" + s);
				for (double j = 0; j < 1000000; j++) {}  //Readable output
			}
		}
	}
}

seeking a job as java-programmer in Berlin:

http://home.arcor.de/hirnstrom/bewerbung

 

[RENO9]

Thanks for the help but its not sorted with

import java.net.*;
import java.io.*;
import java.util.StringTokenizer;
 
public class NetFile
{
  public static void main(String args[])
  {
    String data;
    DataInputStream file = null;
    int post = 300;		//Starting line
    String url = "[URL unfurl="true"]http://www.javaworld.com/columns/jw-tips-index.shtml";[/URL] //Example
    
    try
    {
      file = new DataInputStream((new URL(url)).openStream());
      data = file.readLine();
      
      int x = 0;
      int limit = 360; 
      while (data != null)
      {
           if(x >= post && x <= limit)
            {
              System.out.println(data);
              data=file.readLine();
              StringTokenizer st = new StringTokenizer(data);
              while(st.hasMoreElements())
              {
                String s = st.nextToken();
                System.out.print(x + "\t" + s);
                for(double j = 0; j < 1000000; j++) {}  //Readable output
              }
            }
            data=file.readLine();
            x++;
        }
      }
    catch(IOException e)
    {
      System.out.println("Error : " + e);
    }
  }
}

 

[RENO9]

Sorry a typo, "Thanks for the help but its 'got' sorted with"...

Cheers