Thread: Java Web Browser Term Project- I am facing multiple problem...pls help

Originally Posted by tazbinur

I am currently trying to make a web browser in JAVA.....but i am in big trouble in writing the code of saving a web page.....it is a bit tough as there are texts and images in a web page......can anyone help???? Please let me know if you can

Also I am having problem managing the cookies and enabling Javascript in my code....can anyone help me in this regard?
I am posting my code here

Way beyond me to figure that out, but at any rate, what code? It says "Page not found".

A web browser as a term project? Are you going for your doctorate or Masters or something? That seems a bit hard, an entire browser!

Here is my entire code.....I have not included the icons though.....pls help me with the save option....i tried....but i failed to complete this option...

    package webbrowser;   import java.util.*; import java.awt.*; import java.awt.event.*; import java.awt.event.MouseListener; import java.net.*; import java.io.*; import javax.swing.*; import javax.swing.event.*; import java.awt.datatransfer.*; import javax.swing.text.html.*; import javax.swing.UIManager; import javax.swing.SwingUtilities;         class Main extends JFrame implements ActionListener{ public JPanel addressPanel,descriptionPanel,buttonPanel,socialPanel,siPanel; public JButton Home,Stop,Reload,backPage,forwardPage,bookmarks,facebook,twitter,gmail,yahoo,cricinfo,bbc,Openfile,cutbutton,copybutton,pastebutton,sourcebutton,historybutton,infobutton; public JButton blockbutton,unblockbutton,bpbutton,passbutton; public JTextField address,searchHere; public JComboBox Combo; public JEditorPane contents; public JLabel description,l1; public String[] searchItem={"Bing","Ask.com","Yahoo","Amazon.com","Answer.com","eBay","Wikipedia"}; final String key="http://"; Clipboard clip = getToolkit().getSystemClipboard(); public String str,copiedStr; JMenu skins,file,edit,view,history,bookmark,tool,help,security; JSeparator js1; File saveas; private String newtxtad="";       JMenuItem winlook = new JMenuItem("Windows"); JMenuItem unixlook = new JMenuItem("Motif"); JMenuItem nimbuslook= new JMenuItem("Nimbus");     Stack<String> backLog=new Stack<String>(); Stack<String> forLog=new Stack<String>();     boolean backButtonClicked=false; boolean forwardButtonClicked=false; boolean copyClicked=false; boolean addressClicked=false,searchHereClicked=false; int flag2=0; int search=0; int index = 0; String a[]; int bookmarkIndex=0;   boolean bookmarkFlag=false;           /***************************************CONSTRUCTOR*************************************************/     public Main(){       setLocation(100,80); setTitle("Infinity Web Browser"); setSize(new Dimension(1000,600)); setDefaultCloseOperation(EXIT_ON_CLOSE);     try   {   UIManager.setLookAndFeel ("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");	updater(); }   catch(Exception e) {}         MouseKarikuri Mouse = new MouseKarikuri(); int i; ImageIcon backIcon=new ImageIcon("Back.png"); ImageIcon forwardIcon=new ImageIcon("next.png"); ImageIcon stopIcon=new ImageIcon("Delete.png"); ImageIcon reloadIcon=new ImageIcon("refresh.png"); ImageIcon homeIcon=new ImageIcon("home.png"); ImageIcon bookmarkIcon=new ImageIcon("star.png");   ImageIcon facebookIcon=new ImageIcon("facebook.png"); ImageIcon twitterIcon=new ImageIcon("twitter.png"); ImageIcon gmailIcon=new ImageIcon("Gmail.png"); ImageIcon yahooIcon=new ImageIcon("yahoo.png"); ImageIcon cricinfoIcon=new ImageIcon("cricinfo.png"); ImageIcon bbcIcon=new ImageIcon("bbc.png");       addressPanel=new JPanel(); siPanel=new JPanel();   JPanel head=new JPanel(); head.setLayout(new FlowLayout());   buttonPanel=new JPanel(); socialPanel= new JPanel();     head.add(buttonPanel,BorderLayout.WEST); head.add(socialPanel,BorderLayout.EAST);	buttonPanel.setBackground(Color.LIGHT_GRAY);	socialPanel.setBackground(Color.LIGHT_GRAY);       ImageIcon ofIcon=new ImageIcon("File1.png"); ImageIcon cutIcon=new ImageIcon("Cut1.png"); ImageIcon copyIcon=new ImageIcon("Copy1.png"); ImageIcon pasteIcon=new ImageIcon("paste1.png"); ImageIcon sourceIcon=new ImageIcon("Document1.png"); ImageIcon historyIcon=new ImageIcon("history1.png"); ImageIcon asIcon=new ImageIcon("Info1.png"); ImageIcon blockIcon=new ImageIcon("block.png"); ImageIcon unblockIcon=new ImageIcon("Unblock.png"); ImageIcon blockpageIcon=new ImageIcon("delete_page.png"); ImageIcon passIcon=new ImageIcon("lock1.png");   Openfile=new JButton(ofIcon); Openfile.setToolTipText("Open File"); Openfile.addActionListener(this);     cutbutton=new JButton(cutIcon); cutbutton.setToolTipText("Cut"); cutbutton.addActionListener(this);   copybutton=new JButton(copyIcon); copybutton.setToolTipText("Copy"); copybutton.addActionListener(this);   pastebutton=new JButton(pasteIcon); pastebutton.setToolTipText("Paste"); pastebutton.addActionListener(this);   sourcebutton=new JButton(sourceIcon); sourcebutton.setToolTipText("Source code"); sourcebutton.addActionListener(this);   historybutton=new JButton(historyIcon); historybutton.setToolTipText("History"); historybutton.addActionListener(this);   infobutton=new JButton(asIcon); infobutton.setToolTipText("Information"); infobutton.addActionListener(this);   blockbutton=new JButton(blockIcon); blockbutton.setToolTipText("Block Web Page"); blockbutton.addActionListener(this);   unblockbutton=new JButton(unblockIcon); unblockbutton.setToolTipText("Unblock Web Page"); unblockbutton.addActionListener(this);   bpbutton=new JButton(blockpageIcon); bpbutton.setToolTipText("View Blocked Pages"); bpbutton.addActionListener(this);   passbutton=new JButton(passIcon); passbutton.setToolTipText("Reset Password"); passbutton.addActionListener(this);    	siPanel.add(Openfile); siPanel.add(cutbutton); siPanel.add(copybutton); siPanel.add(pastebutton); siPanel.add(sourcebutton); siPanel.add(historybutton); siPanel.add(infobutton); siPanel.add(blockbutton); siPanel.add(unblockbutton); siPanel.add(bpbutton); siPanel.add(passbutton);  	Openfile.setBackground(Color.lightGray);	cutbutton.setBackground(Color.lightGray);	copybutton.setBackground(Color.lightGray);	pastebutton.setBackground(Color.lightGray);	sourcebutton.setBackground(Color.lightGray); historybutton.setBackground(Color.lightGray); infobutton.setBackground(Color.lightGray);   blockbutton.setBackground(Color.lightGray); unblockbutton.setBackground(Color.lightGray); bpbutton.setBackground(Color.lightGray); passbutton.setBackground(Color.lightGray);       backPage=new JButton(backIcon); backPage.setToolTipText("Click to go back"); backPage.setBounds(10,02,40,35); if(backLog.size()<=1) backPage.setEnabled(false); backPage.addActionListener(this);   forwardPage=new JButton(forwardIcon); forwardPage.setToolTipText("Click to go forward"); forwardPage.setBounds(60,02,40,35); if(forLog.size()==0)forwardPage.setEnabled(false); forwardPage.addActionListener(this);   Reload=new JButton(reloadIcon); Reload.setToolTipText("Reload this page"); Reload.addActionListener(this);   Stop=new JButton(stopIcon); Stop.setToolTipText("Stop this page"); Stop.addActionListener(this);   Home=new JButton(homeIcon); Home.setToolTipText("Open the Home page"); Home.addActionListener(this);     bookmarks=new JButton(bookmarkIcon); bookmarks.setToolTipText("Bookmark this page"); bookmarks.addActionListener(this);   facebook=new JButton(facebookIcon); facebook.setToolTipText("Open Facebook"); facebook.addActionListener(this);   twitter=new JButton(twitterIcon); twitter.setToolTipText("Open Twitter"); twitter.addActionListener(this);   gmail=new JButton(gmailIcon); gmail.setToolTipText("Open Gmail"); gmail.addActionListener(this);   yahoo=new JButton(yahooIcon); yahoo.setToolTipText("Open Yahoo Mail"); yahoo.addActionListener(this);   cricinfo=new JButton(cricinfoIcon); cricinfo.setToolTipText("Open Cricinfo"); cricinfo.addActionListener(this);   bbc=new JButton(bbcIcon); bbc.setToolTipText("Read latest news"); bbc.addActionListener(this);         buttonPanel.add(backPage); buttonPanel.add(forwardPage); buttonPanel.add(Reload); buttonPanel.add(Stop); buttonPanel.add(Home); buttonPanel.add(bookmarks);   socialPanel.add(facebook); socialPanel.add(twitter); socialPanel.add(gmail); socialPanel.add(yahoo); socialPanel.add(cricinfo); socialPanel.add(bbc);         Font font=new Font("Georgia",Font.PLAIN,18);   l1=new JLabel(" Web Address :"); l1.setFont(font); addressPanel.add(l1); address=new JTextField(30); address.setSize(2000,10); address.setText("Enter Address Here");     address.setFont(font); address.addActionListener(this);	address.addMouseListener(Mouse);	addressPanel.add(address);   Combo=new JComboBox(); Combo.addActionListener(this); for(i=0;i<searchItem.length;i++) Combo.addItem(searchItem[i]); addressPanel.add(Combo); Combo.setEditable(true);   searchHere=new JTextField(10); searchHere.setText("Search Here!!!"); searchHere.setFont(font); searchHere.addMouseListener(Mouse); searchHere.addActionListener(this); addressPanel.add(searchHere);      	MenuInterface();   contents = new JEditorPane(); contents.setEditable(false);	LinkListener linkHandler = new LinkListener();	contents.addHyperlinkListener(linkHandler);	add(new JScrollPane(contents),BorderLayout.CENTER);  	descriptionPanel=new JPanel();	description=new JLabel("");	descriptionPanel.add(description);    	Stop.setBackground(Color.lightGray);	Home.setBackground(Color.lightGray);	Reload.setBackground(Color.lightGray);	backPage.setBackground(Color.lightGray);	forwardPage.setBackground(Color.lightGray);	bookmarks.setBackground(Color.lightGray);	facebook.setBackground(Color.white);	twitter.setBackground(Color.white);	gmail.setBackground(Color.white);	yahoo.setBackground(Color.white);	cricinfo.setBackground(Color.white);	bbc.setBackground(Color.white);        	Combo.setBackground(Color.white);	addressPanel.setBackground(Color.black);     JPanel ananta=new JPanel();	ananta.setBackground(Color.white);	ananta.setLayout(new GridLayout(2,1));	ananta.add(siPanel);	siPanel.setBackground(Color.white);	ananta.add(addressPanel);	addressPanel.setBackground(Color.gray);         JPanel Shovon=new JPanel();	Shovon.setBackground(Color.white);	Shovon.setLayout(new GridLayout(2,1));	Shovon.add(head);	head.setBackground(Color.lightGray);	Shovon.add(ananta);	ananta.setBackground(Color.GRAY);         add(BorderLayout.NORTH,Shovon); add(BorderLayout.SOUTH,descriptionPanel); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);   setVisible(true); pack();   }       JMenuBar menuBar; JMenuItem j[]=new JMenuItem[23]; JMenuItem b[]=new JMenuItem[10]; JMenuItem r[]=new JMenuItem[10]; JMenuItem clearbook,block,setPassword,blockedPage,unblock; int recentItem;       public void MenuInterface(){     menuBar=new JMenuBar(); file=new JMenu("File"); file.setMnemonic('F'); edit=new JMenu("Edit"); edit.setMnemonic('E'); view=new JMenu("View"); view.setMnemonic('V'); history=new JMenu("History"); history.setMnemonic('H'); bookmark=new JMenu("Bookmarks"); bookmark.setMnemonic('B'); tool=new JMenu("Tools"); tool.setMnemonic('T'); help=new JMenu("Help"); help.setMnemonic('I'); security=new JMenu("Security"); security.setMnemonic('S');       j[0] = new JMenuItem("Open Location"); j[0].setIcon(new ImageIcon("url.png")); j[1] = new JMenuItem("Open File"); j[1].setIcon(new ImageIcon("File.png")); j[2] = new JMenuItem("Save"); j[2].setIcon(new ImageIcon("save.png")); j[3] = new JMenuItem("Exit"); j[3].setIcon(new ImageIcon("exit.png"));   j[4] = new JMenuItem("Undo");//not used j[5] = new JMenuItem("Redo");//not used j[6] = new JMenuItem("Cut"); j[6].setIcon(new ImageIcon("Cut.png")); j[7] = new JMenuItem("Copy"); j[7].setIcon(new ImageIcon("Copy.png")); j[8] = new JMenuItem("Paste"); j[8].setIcon(new ImageIcon("paste.png")); j[9] = new JMenuItem("Find");//not used   j[12] = new JMenuItem("Status Bar"); j[11] = new JMenuItem("Menu Bar");//not used j[10] = new JMenuItem("Navigation Bar");//not used j[13] = new JMenuItem("Page Source"); j[13].setIcon(new ImageIcon("Document.png"));   j[14] = new JMenuItem("Back"); j[14].setIcon(new ImageIcon("Backward.png")); j[14].setEnabled(false); j[15] = new JMenuItem("Forward"); j[15].setIcon(new ImageIcon("Forward.png")); j[15].setEnabled(false); j[16] = new JMenuItem("Show All History"); j[16].setIcon(new ImageIcon("history.png")); j[17] = new JMenuItem("Recent Pages");   j[18] = new JMenuItem("Bookmark This Page"); j[18].setIcon(new ImageIcon("Stars.png")); j[19] = new JMenuItem("Recently Bookmarked"); j[19].setIcon(new ImageIcon("Green.png")); j[20] = new JMenuItem("Page Info"); j[20].setIcon(new ImageIcon("Info.png")); j[21] = new JMenuItem("Clear History"); j[21].setIcon(new ImageIcon("Clear.png"));   clearbook=new JMenuItem("Clear All Bookmark"); clearbook.setIcon(new ImageIcon("broom.png"));   block=new JMenuItem("Block Web Page"); block.setIcon(new ImageIcon("block1.png")); unblock=new JMenuItem("Unblock Page"); unblock.setIcon(new ImageIcon("page_accept.png")); blockedPage=new JMenuItem("Blocked Pages"); blockedPage.setIcon(new ImageIcon("delete_page1.png")); setPassword=new JMenuItem("Set Password"); setPassword.setIcon(new ImageIcon("lock.png"));     skins=new JMenu("Skins");   j[22] = new JMenuItem("About Us"); j[22].setIcon(new ImageIcon("Info.png")); j[22].setBackground(Color.white);  	js1=new JSeparator();   int k; for(k=0;k<=3;k++) file.add(j[k]); for(k=6;k<=8;k++) edit.add(j[k]); for(k=13;k<=13;k++) view.add(j[k]); for(k=14;k<=17;k++) history.add(j[k]); for(k=18;k<=19;k++) bookmark.add(j[k]); for(k=20;k<=21;k++) tool.add(j[k]);	help.add(j[22]);	tool.add(clearbook);	tool.add(js1);	tool.add(skins);	security.add(block);	security.add(setPassword);	security.add(blockedPage);	security.add(unblock);	unblock.addActionListener(this);	blockedPage.addActionListener(this);	block.addActionListener(this);	setPassword.addActionListener(this);	clearbook.addActionListener(this);  	skins.add(winlook);	skins.add(unixlook);	skins.add(nimbuslook);  	winlook.addActionListener(this);	unixlook.addActionListener(this);	nimbuslook.addActionListener(this);    	history.addSeparator();	bookmark.addSeparator();     for(k=0;k<j.length;k++) j[k].addActionListener(this);   menuBar.add(file); menuBar.add(edit); menuBar.add(view); menuBar.add(history); menuBar.add(bookmark); menuBar.add(tool); menuBar.add(help); menuBar.add(security);   try{	addBookmark(); }catch(IOException e){ System.out.println("Error Reading File"); }	addRecentHistory(); setJMenuBar(menuBar); }     public void addBookmark()throws IOException { FileReader ff=null; try{	ff=new FileReader("bookmarkLog.txt"); }catch(FileNotFoundException e){ System.out.println("File Not Found"); }   BufferedReader br=new BufferedReader(ff);   String s; int i=0; while((s=br.readLine())!=null){	b[i]=new JMenuItem(s);	bookmark.add(b[i]);	b[i].addActionListener(this);	i++; if(i>=10){ break; } }	bookmarkIndex=i;	ff.close();   }       public void addRecentHistory(){ FileReader f=null; try{	f=new FileReader("historyLog.txt"); BufferedReader br=new BufferedReader(f); int count=0; String s=null; while((s=br.readLine())!=null)count++;	f.close();	br=null;     String ss[]=new String[10];	s=null;	f=new FileReader("historyLog.txt");	br=new BufferedReader(f); int v=count-ss.length;   for(int i=0;i<v;i++){	s=br.readLine(); } int j=0; while((s=br.readLine())!=null){	ss[j]=s;	j++; }	recentItem=j;	j--; int k=0; while(j>=0){	r[k]=new JMenuItem(ss[j]);	r[k].addActionListener(this);  	history.add(r[k]);	k++;j--; }     }catch(FileNotFoundException e){ System.out.println("File Not Found"); }catch(IOException ee){ System.out.println("Error Reading File"); } }       private class MouseKarikuri implements MouseListener{ public void mousePressed(MouseEvent e) {   if(e.getComponent()==address){ if(copyClicked)j[8].setEnabled(true); } else if(e.getComponent()==searchHere){ if(copyClicked)j[8].setEnabled(true); } else j[8].setEnabled(false); if(e.getComponent()==address) { if(addressClicked==false){	address.setSelectionStart(0);	addressClicked=true; } else addressClicked=false;   } else if(e.getComponent()==searchHere)searchHere.setSelectionStart(0); } public void mouseReleased(MouseEvent e) { if(e.getComponent()==contents){	str=contents.getSelectedText(); if(str!=null){	j[7].setEnabled(true); } else j[7].setEnabled(false); }   else if(e.getComponent()==address){	str=address.getSelectedText(); if(str!=null){	j[7].setEnabled(true); } else j[7].setEnabled(false); }   else if(e.getComponent()==searchHere){	str=searchHere.getSelectedText(); if(str!=null){	j[7].setEnabled(true); } else j[7].setEnabled(false); }     else {	j[7].setEnabled(false); } } public void mouseEntered(MouseEvent e) {} public void mouseExited(MouseEvent e) {}   public void mouseClicked(MouseEvent e) {} }     private class LinkListener implements HyperlinkListener{ public void hyperlinkUpdate(HyperlinkEvent event) { if (event.getEventType() == HyperlinkEvent.EventType.ACTIVATED) showPage(event.getURL().toString()); if (event.getEventType() == HyperlinkEvent.EventType.ENTERED){	description.setText(event.getURL().toString()); } else description.setText(""); } }       public void actionPerformed(ActionEvent ae){   if(ae.getSource()==address){ showPage(address.getText()); }       ///********************************************************************************************************************************////       /***************************************OPEN LOCATION*************************************************/   if(ae.getSource()==j[0]) showPage(address.getText());   /***************************************OPEN*************************************************/   else if((ae.getSource()==j[1])||(ae.getSource()==Openfile)) { try { JFileChooser ch=new javax.swing.JFileChooser();	ch.setFileSelectionMode(javax.swing.JFileChooser.FILES_ONLY); int i=ch.showOpenDialog(contents); File f=ch.getSelectedFile();	contents.setPage("file:///"+f.getAbsolutePath()); }   catch(Exception ec){} }         /***************************************EXIT*************************************************/   else if(ae.getSource()==j[3]){ int i=JOptionPane.showConfirmDialog(this,"Do you want to exit Browser?","Web Browser",JOptionPane.OK_CANCEL_OPTION); if(i==JOptionPane.OK_OPTION) System.exit(1); }     /***************************************CUT*************************************************/   else if((ae.getSource()==j[6])||(ae.getSource()==cutbutton)){ address.cut(); searchHere.cut(); }     /***************************************COPY*************************************************/   else if((ae.getSource()==j[7])||(ae.getSource()==copybutton)){//copy copiedStr=str; copyClicked=true; address.copy(); }     /***************************************PASTE*************************************************/   else if((ae.getSource()==j[8])||(ae.getSource()==pastebutton)){	address.paste(); }       /***************************************PAGE SOURCE*************************************************/   else if((ae.getSource()==j[13])||(ae.getSource()==sourcebutton)){   JFrame pageFrame=new JFrame("SOURCE CODE"); pageFrame.setLocation(300,150); pageFrame.setSize(600,400); JTextArea pageArea=new JTextArea(); pageFrame.add(new JScrollPane(pageArea)); pageFrame.setVisible(true); float f2[]=new float[3]; Color.RGBtoHSB(211,218,237,f2); pageArea.setBackground(Color.getHSBColor(f2[0],f2[1],f2[2]));     Font f=new Font("Georgia",Font.PLAIN,14); pageArea.setFont(f);   try { URL PageUrl; URLConnection GetConn = null; GetConn = null;   PageUrl = new URL(address.getText()); GetConn = PageUrl.openConnection();   GetConn.connect();   InputStreamReader ReadIn = new InputStreamReader(GetConn.getInputStream()); BufferedReader BufData = new BufferedReader(ReadIn); String TextFileName = ("crossword.txt"); FileWriter FWriter = new FileWriter(TextFileName); BufferedWriter BWriter = new BufferedWriter(FWriter); String UrlData = null; while ((UrlData = BufData.readLine()) != null) { BWriter.write(UrlData); BWriter.newLine(); } BWriter.close(); } catch(IOException io) { try{   FileWriter input=new FileWriter("crossword.txt");	input.write("");	input.close(); }catch(IOException e){ System.out.println(e); } //System.out.println(io); }       try{ String g=null; StringBuffer sb1=new StringBuffer(""); FileReader ff1=new FileReader("crossword.txt"); BufferedReader br1=new BufferedReader(ff1); boolean flag1=true; while((g=br1.readLine())!=null) {	flag1=false;	sb1.append(g+'\n'); } if(flag1) sb1.append("\t\tNo Source Code Found");  	pageArea.setText(sb1.toString());	pageArea.setEditable(false);  	ff1.close();   } catch(FileNotFoundException e){ System.out.println("File Not Found");   } catch(IOException ee){ System.out.println("File Reading Error!!!");   }   }       /***************************************BACK*************************************************/   else if(ae.getSource()==j[14]){	ae.setSource(backPage); return; }     /***************************************FORWARD*************************************************/   else if(ae.getSource()==j[15]){	ae.setSource(forwardPage); return; }       /************************************HISTORY***********************************/   else if((ae.getSource()==j[16])||(ae.getSource()==historybutton)){ JFrame histFrame=new JFrame("History"); histFrame.setSize(400,400); JTextArea histArea=new JTextArea(); histFrame.add(new JScrollPane(histArea)); histFrame.setVisible(true); histArea.setBackground(Color.gray);     Font f=new Font("Georgia",Font.PLAIN,18);   histArea.setFont(f);     BufferedReader br=null; FileReader ff=null; try{ String s=null; StringBuffer sb=new StringBuffer(""); ff=new FileReader("historyLog.txt"); br=new BufferedReader(ff); boolean flag=true; while((s=br.readLine())!=null) {	flag=false;	sb.append(s+'\n'); } if(flag) sb.append("\tNo History Found");   histArea.setText(sb.toString());	histArea.setEditable(false);  	ff.close();   } catch(FileNotFoundException e){ System.out.println("File Not Found");   } catch(IOException ee){ System.out.println("File Reading Error!!!");   } }     /******************************************BOOKMARK*********************************************/   else if(ae.getSource()==j[18]){ FileWriter f=null;   if(bookmarkFlag==true) {   String s=address.getText()+'\n'; char buffer[]=new char[s.length()];	s.getChars(0,s.length(),buffer,0);   try{	f=new FileWriter("bookmarkLog.txt",true);	f.write(buffer);	f.close(); for(int i=0;i<bookmarkIndex;i++)bookmark.remove(b[i]);	addBookmark();     }catch(IOException e){ System.out.println("File Error!"); }   } }       /***********************************PAGE INFO**************************************/   else if(ae.getSource()==j[20]){ URL hp=null;   String loc,st=address.getText(); if(st.startsWith(key)==false)loc=key+st; else loc=st;   System.out.println(loc);   try{	hp=new URL(loc);	st="Protocol: "+hp.getProtocol()+'\n'+ "Port: "+hp.getPort()+'\n'+ "Host: "+hp.getHost()+'\n'+ "File: "+hp.getFile()+'\n'+ "Ext: "+hp.toExternalForm();  	contents.setText(st);   }catch(MalformedURLException e){	st="Unable to Retrive Any Information"; JOptionPane.showMessageDialog(this,"Page Info:\n"+st,"Page Info",JOptionPane.INFORMATION_MESSAGE); } }       /***********************************CLEAR HISTORY*************************************/   else if(ae.getSource()==j[21]){ FileWriter f=null;   int i=JOptionPane.showConfirmDialog(this,"Are You Sure To Clear History?","History",JOptionPane.OK_CANCEL_OPTION); if(i==JOptionPane.CANCEL_OPTION)return; if(i==JOptionPane.CLOSED_OPTION)return;     try{	f=new FileWriter("historyLog.txt");	f.write("");	f.close(); for(int p=0;p<recentItem;p++)history.remove(r[p]);     }catch(FileNotFoundException e){ System.out.println("History Can't be cleared"); }catch(IOException ee){ System.out.println("History Can't be cleared"); }     }       /*********************************ABOUT US************************************/   else if((ae.getSource()==j[22])||(ae.getSource()==infobutton)){   String s=" Term Project \n"+ " ****WEB BROWSER**** \n"+ "Adviser: Shebuti Rayana\n"+ " Lecturer,BUET\n"+ "Programmers: Mir Tazbinur Shovon (0805040) \n"+ " Ananta Ghosh (0805041)\n"+ " For further information you can mail us at\n"+ " [email]tazbinur@gmail.com[/email]\n"+ " [email]g_ananta@hotmail.com[/email]"; JOptionPane.showMessageDialog(this,s,"About Us",JOptionPane.INFORMATION_MESSAGE); }         /*****************************CLEAR BOOKMARK***************************/   else if(ae.getSource()==clearbook){ FileWriter f=null;   int i=JOptionPane.showConfirmDialog(this,"Are You Sure To Clear All Bookmarks?","Bookmark",JOptionPane.OK_CANCEL_OPTION); if(i==JOptionPane.CANCEL_OPTION)return; if(i==JOptionPane.CLOSED_OPTION)return;   try{	f=new FileWriter("bookmarkLog.txt");	f.write("");	f.close(); System.out.println(bookmarkIndex); for(int p=0;p<bookmarkIndex;p++)bookmark.remove(b[p]);     }catch(FileNotFoundException e){ System.out.println("Bookmark Can't be cleared"); }catch(IOException ee){ System.out.println("Bookmark Can't be cleared"); }     }         /*****************************BLOCK PAGE*******************************/   else if((ae.getSource()==block)||(ae.getSource()==blockbutton)){	WebBlocker ob=new WebBlocker(true);   }       /*****************************UNBLOCK PAGE*******************************/   else if((ae.getSource()==unblock)||(ae.getSource()==unblockbutton)){	WebBlocker ob=new WebBlocker(false);   }       /**************************SHOW BLOCKED PAGES***************************/   else if((ae.getSource()==blockedPage)||(ae.getSource()==bpbutton)){ try{ FileReader f=new FileReader("block.txt"); BufferedReader br=new BufferedReader(f);   String s=br.readLine(); if(s==null){ JOptionPane.showConfirmDialog(this,"No Blocked Pages","Page Blocker",JOptionPane.PLAIN_MESSAGE); } else{   JFrame pageFrame=new JFrame("Blocked Pages"); pageFrame.setLocation(300,150); pageFrame.setSize(600,400); pageFrame.setVisible(true);   JTextArea pageArea=new JTextArea(); pageFrame.add(new JScrollPane(pageArea)); pageFrame.setVisible(true); Font ff=new Font("Georgia",Font.PLAIN,14); pageArea.setFont(ff); float f2[]=new float[3]; Color.RGBtoHSB(211,218,237,f2); pageArea.setBackground(Color.getHSBColor(f2[0],f2[1],f2[2])); pageArea.setEditable(false);   StringBuffer sbuf=new StringBuffer(s+'\n'); while((s=br.readLine())!=null){	sbuf.append(s+'\n'); }   pageArea.setText(sbuf.toString());     }	f.close(); }catch(IOException e){ } }       /***************************SET PASSWORD******************************/   else if((ae.getSource()==setPassword)||(ae.getSource()==passbutton)){	PasswordSetter ob=new PasswordSetter(); }       /*****************************CLEAR BOOKMARK***************************/   else if(ae.getSource()==clearbook){ FileWriter f=null;   int i=JOptionPane.showConfirmDialog(this,"Are You Sure To Clear All Bookmarks?","Bookmark",JOptionPane.OK_CANCEL_OPTION); if(i==JOptionPane.CANCEL_OPTION)return; if(i==JOptionPane.CLOSED_OPTION)return;   try{	f=new FileWriter("bookmarkLog.txt");	f.write("");	f.close(); System.out.println(bookmarkIndex); for(int p=0;p<bookmarkIndex;p++)bookmark.remove(b[p]);     }catch(FileNotFoundException e){ System.out.println("Bookmark Can't be cleared"); }catch(IOException ee){ System.out.println("Bookmark Can't be cleared"); }     }       for(int q=0;q<bookmarkIndex;q++){ if(ae.getSource()==b[q]){ showPage(b[q].getText()); } } for(int p=0;p<recentItem;p++){ if(ae.getSource()==r[p]){ showPage(r[p].getText()); } }     ////*********************************************************************************************************************************////// /***************************************FOR BUTTONS*************************************************/     if(ae.getSource()==Home){	showPage("http://www.google.com"); }     else if(ae.getSource()==facebook){	showPage("http://www.facebook.com"); }     else if(ae.getSource()==twitter){	showPage("http://www.twitter.com"); }     else if(ae.getSource()==gmail){	showPage("http://www.gmail.com"); }     else if(ae.getSource()==yahoo){	showPage("http://mail.yahoo.com/"); }     else if(ae.getSource()==cricinfo){	showPage("http://www.cricinfo.com/"); }     else if(ae.getSource()==bbc){	showPage("http://www.bbc.co.uk"); }     else if(ae.getSource()==Reload){	showPage(address.getText());   }     else if(ae.getSource()==Stop){ try{   File gt=new File("C:/White.html");   if(gt.isFile() && gt.exists()) { contents.setPage(new URL("file://localhost/C:/White.html")); }   else {   FileWriter m=new FileWriter("C:/stop.html"); m.write("<html>"+"\n" +" <body>"+"\n" +"</body>" +"\n" +"	</html> ");	m.close(); contents.setPage(new URL("file://localhost/C:/stop.html"));   }   } catch(Exception gty){} }     else if(ae.getSource()==backPage){	forLog.push(backLog.pop());	backButtonClicked=true;	showPage(backLog.peek()); }     else if(ae.getSource()==forwardPage){	forwardButtonClicked=true;	showPage(forLog.pop()); }       /*******************************Skin Updater******************************/   /********************Windows******************************/ else if(ae.getSource()==winlook){ try   {   UIManager.setLookAndFeel ("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");	updater(); }   catch(Exception e) {} }     /******************************Motif**********************************/ else if(ae.getSource()==unixlook){ try   {   UIManager.setLookAndFeel ("com.sun.java.swing.plaf.motif.MotifLookAndFeel");	updater(); }     catch(Exception e) {} }   /*******************Nimbus***************/ else if(ae.getSource()==nimbuslook){ /* try  	{  	UIManager.setLookAndFeel ("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");	updater();	}  	catch(Exception e)	{}*/   try { UIManager.setLookAndFeel("com.jtattoo.plaf.hifi.HiFiLookAndFeel");	updater(); } catch (Exception e) { } }     /*******************************************************************************************************************/     else if(ae.getSource()==bookmarks){ FileWriter f=null;   if(bookmarkFlag==true) {   String s=address.getText()+'\n'; char buffer[]=new char[s.length()];	s.getChars(0,s.length(),buffer,0);   try{	f=new FileWriter("bookmarkLog.txt",true);	f.write(buffer);	f.close(); for(int i=0;i<bookmarkIndex;i++)bookmark.remove(b[i]);	addBookmark();     }catch(IOException e){ System.out.println("File Error!"); }   } }       /******************************SEARCH ENGINE**********************************************/     else if(ae.getSource()==Combo){   String select = (String)Combo.getSelectedItem();     if(select.equals("Bing")) {	search = 1; }   if(select.equals("Ask.com")) {   search = 2; } else if(select.equals("Yahoo")) {   search = 3; } else if(select.equals("Amazon.com")) {   search = 4; }   else if(select.equals("Answer.com")) {   search = 5; }   else if(select.equals("eBay")) {   search = 6; }   else if(select.equals("Wikipedia")) { search = 7; } }       else if(ae.getSource()==searchHere){     if(search == 1) // Google { String google = "http://www.bing.com/search?q="+searchHere.getText()+"&go=&form=QBLH&qs=n&sk=&sc=8-3" ; address.setText(google); showPage(google); }   if(search == 2) // Ask.com { String ask = "http://www.ask.com/web?q="+searchHere.getText()+"&search=&qsrc=0&o=0&l=dir" ; address.setText(ask); showPage(ask); }     if(search == 3) // Yahoo { String yahoo = "http://search.yahoo.com/search?p="+searchHere.getText()+"&fr=yfp-t-501&toggle=1&cop=mss&ei=UTF-8" ; address.setText(yahoo); showPage(yahoo); }     if(search == 4) // Amazon { String amazon = "http://www.amazon.com/s/192-2503304-2985467?ie=UTF8&tag=mozilla-20&index=blended&link_code=qs&field-keywords="+searchHere.getText()+"&sourceid=Mozilla-search" ; address.setText(amazon); showPage(amazon); }     if(search == 5) // Answer.com { String answer = "http://www.answers.com/main/ntquery?s="+searchHere.getText()+"&gwp=13" ; address.setText(answer); showPage(answer); }     if(search == 6) // eBay.com { String ebay = "http://shop.ebay.com/i.html?_nkw="+searchHere.getText()+"&_armrs=1&_from=&_ipg=" ; address.setText(ebay); showPage(ebay); }     if(search == 7) // Wikipedia { String wiki = "http://en.wikipedia.org/wiki/Special:Search?search="+searchHere.getText()+"&go=Go"; address.setText(wiki); showPage(wiki); } }   }       /*****************************************************************************************************************************************/     public boolean isBlocked(String loc){ try{ FileReader f=new FileReader("block.txt"); BufferedReader br=new BufferedReader(f);   String s=null; while((s=br.readLine())!=null){ if(loc.equals(s)){	f.close(); return true; } }  	f.close(); return false; }catch(IOException e){ return false; } }         public void showPage(String str){   if(str.equals("Enter Address Here") || str.equals("")) return;   String location; if(str.startsWith(key)==false)	location=key+str; else	location=str;         if(backButtonClicked==false){	backLog.push(location); //forLog.clear(); } else backButtonClicked=false;       if(backLog.size()<=1) {	backPage.setEnabled(false);	j[14].setEnabled(false); } else {	backPage.setEnabled(true);	j[14].setEnabled(true); }   if(forLog.size()==0) {	forwardPage.setEnabled(false);	j[15].setEnabled(false); } else {	forwardPage.setEnabled(true);	j[15].setEnabled(false); }       if(isBlocked(location)){ JOptionPane.showMessageDialog(this,"This WebSite is Blocked","Infinity",JOptionPane.ERROR_MESSAGE); return; }       try{	address.setText(location); contents.setPage(location);   bookmarkFlag=true;   FileWriter f=new FileWriter("historyLog.txt",true); String ss=location+'\n'; f.write(ss); f.close(); for(int k=0;k<recentItem;k++)history.remove(r[k]); addRecentHistory();     }catch(IOException hyu){	bookmarkFlag=false;   try{   File rt=new File("C:/error.html");   if(rt.isFile() && rt.exists())   contents.setPage(new URL("file://localhost/C:/Error.html"));       else{   FileWriter w=new FileWriter("C:/error.html"); w.write("<Html> <head> Server not Found (Mirror Error Details) <head>"+"\n\r" +" <Title> Error</Title></head>" +"<Body> <Body> <h1> The page cannot be displayed </h1>" +"The page you are looking for is currently unavailable.</br> \n\r The Web site might be experiencing technical difficulties,</br> \n\r or you may need to adjust your browser settings.</br>" +"	<h3> <u><b>Url ="+address.getText()+"</b></u></h3><br> Please Search On <a href a=http://www.google.co.in> Google </a> </body><html>");	w.close(); contents.setPage(new URL("file://localhost/C:/error.html"));   }   } catch(Exception gty){}     } }         /*******************************CLASS for Skin Updater*************************************/     public void updater() {  	addressPanel.updateUI();	descriptionPanel.updateUI();	buttonPanel.updateUI();	socialPanel.updateUI();	siPanel.updateUI();	js1.updateUI();	skins.updateUI(); file.updateUI(); edit.updateUI(); view.updateUI(); history.updateUI(); bookmark.updateUI(); tool.updateUI(); help.updateUI(); security.updateUI();	Home.updateUI();	Stop.updateUI();	Reload.updateUI();	backPage.updateUI();	forwardPage.updateUI();	bookmarks.updateUI();	facebook.updateUI();	twitter.updateUI();	gmail.updateUI();	yahoo.updateUI();	cricinfo.updateUI();	bbc.updateUI();	Openfile.updateUI();	cutbutton.updateUI();	copybutton.updateUI();	pastebutton.updateUI();	sourcebutton.updateUI();	historybutton.updateUI();	infobutton.updateUI();	blockbutton.updateUI();	unblockbutton.updateUI();	bpbutton.updateUI();	passbutton.updateUI();  	address.updateUI();	searchHere.updateUI();	Combo.updateUI();	description.updateUI();	l1.updateUI();	winlook.updateUI();	unixlook.updateUI();	nimbuslook.updateUI();	contents.updateUI();	menuBar.updateUI();	file.updateUI();	edit.updateUI();	clearbook.updateUI();	view.updateUI();	history.updateUI();	bookmark.updateUI();	tool.updateUI();	help.updateUI();	security.updateUI(); int counter=0; while(j[counter]!=null){ j[counter].updateUI(); counter++; } clearbook.updateUI(); block.updateUI(); blockedPage.updateUI(); unblock.updateUI(); setPassword.updateUI();       }           /******************************************MAIN***************************************************/   static Main frame; public static void main(String[] args) {   frame=new Main(); frame.setVisible(true); frame.setSize(new Dimension(1200,600));     }   }