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Jamsiya N P
question
0 Answer(s)      3 years ago
Posted in : Java Beginners


Sir,

how to write the following code in jsp , avoid swing components , please give me the following code in another method , iwant to avoid swing . /* * To change this template, choose Tools | Templates * and open the template in the editor. */

package sample;

/**
 *
 * @author Manesh
 */
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.net.*;
import java.io.*;
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.*;
import java.io.FileReader;
import java.util.List;
import java.util.ArrayList;
import javax.swing.text.html.parser.ParserDelegator;
import javax.swing.text.html.HTMLEditorKit.ParserCallback;
import javax.swing.text.html.HTML.Tag;
import javax.swing.text.MutableAttributeSet;
public class Original
{
    public static void main(String[] args)
    {
       JFrame frame = new EditorPaneFrame();
          frame.show();
    }

}
class EditorPaneFrame extends JFrame
{

     private JTextField url;
     private JCheckBox editable;
     private JButton loadButton;
     private JButton backButton;
      private JButton b1;
     private JEditorPane editorPane;
     private Stack urlStack = new Stack();


     public EditorPaneFrame()
     {
          setTitle("Java Web Browser");
          setSize(600,400);
          addWindowListener(new WindowAdapter()
          {
               public void windowClosing(WindowEvent e)
               {
                    System.exit(0);
               }
          } );

          // set up text field and load button for typing in URL

          url = new JTextField(30);

          loadButton = new JButton("Load");
          loadButton.addActionListener(new ActionListener()
          {
               public void actionPerformed(ActionEvent event)
               {
                    try
                    {
                         // remember URL for back button
                         urlStack.push(url.getText());
                         editorPane.setPage(url.getText());
                    }
                    catch(Exception e)
                    {
                         editorPane.setText("Error: " +e);
                    }
               }
          });

          // set up back button and button action

          backButton = new JButton("Back");
          backButton.addActionListener(new ActionListener()
          {
               public void actionPerformed(ActionEvent event)
               {
                    if(urlStack.size()<=1) return;
                    try
                    {
                         urlStack.pop();
                         String urlString = (String)urlStack.peek();
                         url.setText(urlString);
                         editorPane.setPage(urlString);
                    }
                    catch(IOException e)
                    {
                         editorPane.setText("Error : " +e);
                    }
               }
          });

          editorPane = new JEditorPane();
          editorPane.setEditable(false);
          editorPane.addHyperlinkListener(new HyperlinkListener()
          {
               public void hyperlinkUpdate(HyperlinkEvent event)
               {
                    if(event.getEventType() == HyperlinkEvent.EventType.ACTIVATED)
                    {
                         try
                         {
                              urlStack.push(event.getURL().toString());
                              System.out.println(event.getURL().toString());
                              url.setText(event.getURL().toString());

                              editorPane.setPage(event.getURL());
                         }
                         catch(IOException e)
                         {
                              editorPane.setText("Error: " + e);
                         }
                    }
               }
          });

          editable = new JCheckBox();
          editable.addActionListener(new ActionListener()
          {
               public void actionPerformed(ActionEvent event)
               {
                    editorPane.setEditable(editable.isSelected());
               }
          });

          Container contentPane = getContentPane();
          contentPane.add(new JScrollPane(editorPane), "Center");

          JPanel panel = new JPanel();
          panel.add(new JLabel("URL"));
          panel.add(url);
          panel.add(loadButton);
          panel.add(backButton);
          panel.add(new JLabel("Editable"));
          panel.add(editable);
      b1=new JButton("Extract");
    panel.add(b1);
     contentPane.add(b1, "East");
          contentPane.add(panel,"South");
    final TextArea ta = new TextArea();
               //  ta.setFont(new Font("Serif", Font.ITALIC, 16));

    //ta.setLineWrap(true);
    //ta.setWrapStyleWord(true);

    panel.add(ta);
    contentPane.add(ta,"West");
JButton b2=new JButton("Summary");
panel.add(b2);
contentPane.add(panel,"South");
    //code 4 extracting url
     b1.addActionListener(new ActionListener()
           {
               public void actionPerformed(ActionEvent event)
                {
                   // System.out.println(url.getText());
     String strUrl = url.getText();
    System.out.println(strUrl);
    v2 x1=new v2();
    try{
        x1.fun(strUrl,ta);
    }
    catch(Exception e){}
               }

    });
  }
}
//new thing
 class v2{
public String fun(String Url,TextArea ta )throws Exception
{
        BufferedWriter writer2 = null;
        BufferedReader reader1 = null;
        BufferedWriter writer3 = null;
            try {
                URL url = new URL(Url);
            BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));
                    BufferedWriter writer = new BufferedWriter(new FileWriter("data.html"));
            writer2 = new BufferedWriter(new FileWriter("xx.txt"));
            writer3 = new BufferedWriter(new FileWriter("content.txt"));
                String line;
            while ((line = reader.readLine()) != null) {
                //System.out.println(line);

                        writer.write(line);
                        writer.newLine();
                    }

                reader.close();
                    writer.close();
        } catch (MalformedURLException e) {
                        e.printStackTrace();
                }
        catch (IOException e) {
            e.printStackTrace();
                }
        FileReader readerutil = new FileReader("data.html");
        List<String> lines = Sample.extractText(readerutil);

        for (String line : lines) {
            writer2.write(line);
            writer2.newLine();
            //System.out.println(line);
        }
        writer2.close();
        BufferedReader br=new BufferedReader(new FileReader("xx.txt"));
        StringBuffer sbr=new StringBuffer();
        String str=br.readLine();
        while(str!=null){
            str = str.trim();
            if(!(str.equals("<")||str.equals(">")||str.equals("|"))){
                sbr.append(str+" ");
                sbr.append("\n");
            }
            str=br.readLine();
        }
        writer3.write(sbr.toString());
            ta.setFont(new Font("Serif", Font.ITALIC, 16));

        ta.setText(sbr.toString());
        //ta.setLineWrap(true);
        //ta.setWrapStyleWord(true);

        writer3.close();
        //String line;
        //while((line=sbr.readLine()!=null){
        //writer3.write(line);
        //writer3.newLine();
        //}writer3.close();
        System.out.println(sbr);

        return "hhhh";
    }
    public static List<String> extractText(Reader reader) throws IOException {
            final ArrayList<String> list = new ArrayList<String>();
            ParserDelegator parserDelegator = new ParserDelegator();
        ParserCallback parserCallback = new ParserCallback() {
                public void handleText(final char[] data, final int pos) {
                    list.add(new String(data));
            }
            public void handleStartTag(Tag tag, MutableAttributeSet attribute, int pos) { }
                public void handleEndTag(Tag t, final int pos) {  }
                public void handleSimpleTag(Tag t, MutableAttributeSet a, final int pos) { }
                public void handleComment(final char[] data, final int pos) { }
                public void handleError(final java.lang.String errMsg, final int pos) { }
            };
        parserDelegator.parse(reader, parserCallback, true);
            return list;
    }
}

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