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Thread: i try to print out SAN FRANCISCO and its weather contents when practising, but i can only print the whole page. i need to print ony san francisco and its content making 4 lines altogether.

  1. #1
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    Default i try to print out SAN FRANCISCO and its weather contents when practising, but i can only print the whole page. i need to print ony san francisco and its content making 4 lines altogether.

     
    import java.io.*;
    import java.net.MalformedURLException;
    import java.net.URL;
    import java.net.URLConnection;
    import java.util.ArrayList;
    import java.util.Scanner;
    import java.util.logging.Level;
    import java.util.logging.Logger;
    import javax.swing.text.Document;
    import javax.xml.parsers.DocumentBuilder;
    import javax.xml.parsers.DocumentBuilderFactory;
    import javax.xml.parsers.ParserConfigurationException;
    import org.w3c.dom.NodeList;
    import org.xml.sax.SAXException;
     
    public class Main {
     
        /**
         * @param args the command line arguments
         */
        public static void main(String[] args) throws IOException, ParserConfigurationException, SAXException {
            // TODO code application logic here
            URL url = null;
            try {
                url = new URL("http://www.nws.noaa.gov/view/prodsByState.php?state=CA&prodtype=state");
            } catch (MalformedURLException ex) {
                Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
            }
     
            URLConnection uc = null;
     
            try {
                uc = url.openConnection();
            } catch (IOException ex) {
                Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
            }
     
            DataInputStream input = null;
            try {
                   input = new DataInputStream(uc.getInputStream());
            } catch (IOException ex) {
                Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
            }
     
     
        String inputLine;
        String result = null;
     
        while ((inputLine = input.readLine()) != null) {
     
            if(inputLine == "   SAN FRANCISCO")
            System.out.println(inputLine);
     
        }
     
     
        input.close();
        }
     
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: i try to print out SAN FRANCISCO and its weather contents when practising, but i can only print the whole page. i need to print ony san francisco and its content making 4 lines altogether.

    One problem I see is the use of == to compare Strings. You should use the equals() method for comparing Strings.
    If you don't understand my answer, don't ignore it, ask a question.

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