Re: Writing a simple HTML report using Java - Java Discussion Boards

raesa5-Jun-09 2:44

5-Jun-09 2:44

Hi,

I have written a small code to access javascript function from a java applet.
My function fails at this point
JSObject win = JSObject.getWindow(this);

I do not understand what is the reason.It gives me following errors when i excute the program :

Exception in thread "main" java.lang.UnsatisfiedLinkError: initClass
at netscape.javascript.JSObject.initClass(Native Method)
at netscape.javascript.JSObject.<clinit>(JSObject.java:61)
at test.InJava4.start(InJava4.java:52)
at test.Main.main(Main.java:30)

Please have a look at my code written below and tell me if i have written anything wrong.Please do help me out. Thnx.
My java Applet code is written below :

import java.net.*;
import java.applet.*;
import netscape.javascript.*;
import netscape.javascript.JSException;

public class InJava extends java.applet.Applet
{
public void init()
{
try
{
System.out.println("hi i am in appltet");
String msg = "Hello from Java (using javascript alert)";
JSObject win = JSObject.getWindow(this);
win.call ("doAlert", null);
}
catch (Exception Ex)
{
System.out.println(Ex.toString());
}
}
public void start(){}
public void stop(){}
public void destroy(){}
}

My JavaScript is written below :

;

function doAlert(s) {
alert(s);
}

<applet code="InJava.class"
="" name="myApplet" mayscript
="" height="10" width="10">

Java Swing - Right Click and JPopupMenu in JTable

djDash5-Jun-09 0:25

djDash

5-Jun-09 0:25

I want a different popup on each row of JTable.
So I thought of setting the row on right click and then add popmenu to JTable.
The following code will help you'll to understand the problem...

private synchronized void HandlePopup(java.awt.event.MouseEvent evt) {                            
            jTable1.setComponentPopupMenu(null);
            if(evt.getButton()==MouseEvent.BUTTON3){
               int y = evt.getY();
               int row = Math.round(y / jTable1.getRowHeight());
               jTable1.setRowSelectionInterval(row, row);               
               System.out.println("Row Selected = " + row);
               jTable1.setComponentPopupMenu(popupMenu);
           }
           else jTable1.setComponentPopupMenu(null);
    }                            

    private void CreatePopup() {
        // Create popup menu, attach popup menu listener
        popupMenu = new JPopupMenu("Title");

        // Cut
        JMenuItem cutMenuItem = new JMenuItem("Cut");
        popupMenu.add(cutMenuItem);

        // Copy
        JMenuItem copyMenuItem = new JMenuItem("Copy");
        popupMenu.add(copyMenuItem);
        // Paste
        JMenuItem pasteMenuItem = new JMenuItem("Paste");
        pasteMenuItem.setEnabled(false);
        popupMenu.add(pasteMenuItem);

        // Separator
        popupMenu.addSeparator();

        // Find
        JMenuItem findMenuItem = new JMenuItem("Find");
        popupMenu.add(findMenuItem);        
    }

Here for the first right click the row gets selected....
then only the popup works and then there is no row selection.
the pop is always the same...coz new row gets never selected...
So how can I handle both popup with right selection...???
Please help me with this...

Re: Java Swing - Right Click and JPopupMenu in JTable

Java John11-Jun-09 1:59

Java John

11-Jun-09 1:59

Where are you determining if the mouse event is a right click or not?

Also - where are you attaching your pop up menu listener?

Your question is pretty poorly explained: it makes it harder to help you.

Creating a file and saving it on a networked computer [modified]

ItIsFinished4-Jun-09 12:00

ItIsFinished

4-Jun-09 12:00

I have a little snippet of code that writes a little text file locally by calling the script through Javascript on a web page. It works fine. Here is the example:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Local File Create Script</title>
</head>

<body>
<script>
function WriteToFile()
{
  try 
  {
    var fso, s;
	fso = new ActiveXObject("Scripting.FileSystemObject");
	s = fso.CreateTextFile("C:\\test.txt", true);
    s.writeline("This is a test");
	s.writeline("Oh Yea!!!!");
    s.Close();
  } 
  catch(err)
  {
   var strErr = 'Error:';
   strErr += '\nNumber:' + err.number;
   strErr += '\nDescription:' + err.description;
   document.write(strErr);
  }
}
</script>

<input name="write_to_file" type="button" id="write_to_file" onClick="WriteToFile()" value="Click Here" />
</body>

</html>

Now , what I would like to do is create that file on another computer by ip address. Here is what I got so far:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Network File Create Script</title>
</head>

<body>
<script>
function WriteToFile()
{
  try 
  {
    var fso, sDir, s;
	fso = new Server.CreateObject("Scripting.FileSystemObject");
	sDir = fso.GetFolder("\\10.6.3.45\c$", true);
	s = fso.CreateTextFile("\test.txt", true);
    s.writeline("This is a test");
	s.writeline("Oh Yea!!!!");
    s.Close();
  } 
  catch(err)
  {
   var strErr = 'Error:';
   strErr += '\nNumber:' + err.number;
   strErr += '\nDescription:' + err.description;
   document.write(strErr);
  }
}
</script>

<input name="write_to_file" type="button" id="write_to_file" onClick="WriteToFile()" value="Click Here" />
</body>

</html>

Here is the error I am getting:

Error: Number:-2146823279 Description:'Server' is undefined

Can anyone help me?

modified on Thursday, June 4, 2009 6:27 PM

Re: Creating a file and saving it on a networked computer [modified]

darkdragn5-Jun-09 2:45

darkdragn

5-Jun-09 2:45

I think you were just over complicating it. You're getting that error because new Server.CreateObject... it's wondering what Server is. Just use the ip like a regular path. I tested it, and this worked for me.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Local File Create Script</title>
</head>

<body>
<script>
function WriteToFile()
{
try
{
var fso, s;
fso = new ActiveXObject("Scripting.FileSystemObject");
s = fso.CreateTextFile("\\\\205.67.214.8\\c$\\test.txt", true);
s.writeline("This is a test");
s.writeline("Oh Yea!!!!");
s.Close();
}
catch(err)
{
var strErr = 'Error:';
strErr += '\nNumber:' + err.number;
strErr += '\nDescription:' + err.description;
document.write(strErr);
}
}
</script>

<input name="write_to_file" type="button" id="write_to_file" onClick="WriteToFile()" value="Click Here" />
</body>

</html>

(i hope you don't mind, but i didn't know you could even save to a file from js until i read your post. I hope you don't mind but i'm going to add this code to my library, ^_^. I only got the solution by being bored and playing with what you provided.)

Friday, June 5, 2009 9:01 AM

Re: Creating a file and saving it on a networked computer

ItIsFinished5-Jun-09 5:44

ItIsFinished

5-Jun-09 5:44

Thank you very much for your help. Everywhere that I looked people were saying that it couldn't be done. Wink | ;)

And now it's part of your library.

Thanks again.

Writing a simple HTML report using Java

raesa3-Jun-09 20:15

raesa

3-Jun-09 20:15

Hi,

I have to write a report in HTML document using java.
Can somebody suggest me some good tutorial or some good links that will help me in doing this task.
It would be very helpful.Please do help me out.

Thank You.

Re: Writing a simple HTML report using Java

Ali Shakiba10-Jun-09 22:19

Ali Shakiba

10-Jun-09 22:19

Salam ( == Hi );
As I understood; you want to use Java to generate a report in HTML format. There is a simple to do job. You just need to do the following:
1- Create an HTML file and Open it in Java;
2- Add header data to the file;
3- Connect to your data source; for example MySQL using JDBC;
4- Run a query to the data source;
5- Parse the query result;
6- Add a parsed query result in appropriate places at the HTML file;
7- Finally add footer to the file;
8- Close the stream;

To show it in your program; use the Swing library;
there is a tut. on sun.com;

link

With my best and warmest regards;
&
With the hope of coming of Mahdi;
Ali Shakiba;
Kerman - Iran (Islamic Republic);

need help geeting a nullpointerexeption [modified]

ashish_bhatia3-Jun-09 1:07

ashish_bhatia

3-Jun-09 1:07

I need hellp moved this code from unix db2 tomcat server to unix mysql tomcat server. Modified the code as per below

This code gives a null pointer exception Please view at www.nerolac.com/dealer6_1.jsp. Please advice.
<pre>
<%@ page language="java" import="java.sql.*"%>
<jsp:useBean id="conb" class="nerolacbean.ConnOdbc"/><script>
</script><%
          String connectionURL = "jdbc:mysql://174.133.229.154:3306/nerolac?";
          Connection connection = null;          Statement statement = null;
          String sql_state,sql_city,flag,city,sql_details;          ResultSet rs_state;
          String id,stateid;          ResultSet rs = null;          ResultSet rs1 = null;
          ResultSet rs2 = null;          String address = null;%>
<SCRIPT ID=clientEventHandlersJS LANGUAGE=javascript>          </SCRIPT><html><body>     <%
          Class.forName("org.gjt.mm.mysql.Driver").newInstance();
          connection = DriverManager.getConnection(connectionURL,"","");
          statement = connection.createStatement();          try          {                              ResultSet rs_city=null;
               ResultSet rs_details=null;               String reqCity=""+request.getParameter("city");
               String reqState=""+request.getParameter("state");               String form_state="";
               sql_state = "select distinct state from dealernetwork order by state";
     %>                         &nbsp;
     <form name="testa" action="dealer6_1.jsp" method="get">
        <table width="100%" border="0" cellspacing="0" cellpadding="0">
          <tr>             <td><img src="images/indiamap2.jpg"   /></td>
             <td valign="middle"><table border="0" cellpadding="2" bordercolor="#000000" bordercolorlight="#000000"   bordercolordark="#000000">
                  <tr>
                    <td height="23" align="center" bgcolor="#FFCCFF" class="txt07" ><b> Select State</b></td>
                    <td height="23" align="center"   bgcolor="#FFCCFF" class="txt07"><b> Select City</b> </td>
                  </tr>                  <tr>                    <%
               if(!reqState.equalsIgnoreCase("null"))//If state is specified               {                    %>
                    <%                    form_state = reqState.toUpperCase();                    if(!form_state.equals(""))
                    {                         try                         {
                              sql_city = "select ID,city,STATEID from dealernetwork where state = '"+form_state+"' order by city";
                         out.println("sql_city "+sql_city);                              rs_city =conb.getResult(sql_city);
                    out.println("rs_city "+rs_city);                              flag = "true";                         }
                         catch(Exception e)                         {
                              System.out.println("IN EXCEPTION-----"+e.getMessage());                         }                    }               }
                    %>
                    <td   height="26" bordercolordark="#00FFFF" align="center">&nbsp;

                       <select name="state" id="state"   onchange="return state_onchange()" class="txt07">
                         <%               if(form_state.equals(""))                         {%>
                         <option selected="selected" value=""> -- Select State --</option>
                         <%}else                         {%>
                         <option value=""> -- Select State -- </option>                         <%}%>
                         <%               rs_state = conb.getResult(sql_state);
               out.println("rs_state "+rs_state);                              while(rs_state.next())               {
                    if((reqState).equals(rs_state.getString("state")))                    {                         %>
                         <option value="<%= rs_state.getString("state")%>" selected="selected"><%= rs_state.getString("state")%></option>
                         <%     }else                         {%>
                         <option value="<%= rs_state.getString("state")%>"><%= rs_state.getString("state")%></option>
                         <%                    }               }                                        %>                       </select></td>
                    <td   height="26" align="center"><%
//if (!reqState.equalsIgnoreCase("null"))//{                       %>
                       <select name="city" onchange="return city_onchange()" class="txt07">
                         <option value="" selected="selected" >--Select City--</option>
                         <%                              String checkcity="";               boolean stateidStatus=true;
               String tempCity="";               if(!reqState.equalsIgnoreCase("null"))               {
                    while(rs_city.next())                    {                         id = rs_city.getString(1);
                         city = rs_city.getString(2);                                                  if(!tempCity.equalsIgnoreCase(city))
                         {                              tempCity = city;                              if(reqCity.equalsIgnoreCase(city))                              {
                         %>
                         <option selected="selected" value="<%=reqCity%>"><%=reqCity%></option>
                         <%     }else                              {                         %>
                         <option value="<%=city%>"><%=city%></option>
                         <%                              }                         }                    }               }                         %>                       </select>
                       <% //}%></td>                  </tr>               </table>               <br />
               <%                              if(!reqCity.equalsIgnoreCase("null"))               {
                    String upper =   reqCity.toUpperCase();
                    String lower =   reqCity.toLowerCase();
                    String firstCap =reqCity.toLowerCase();
                    String firstCap1 = (firstCap.substring(0,1)).toUpperCase();
                    String firstCap2 = firstCap.substring(1,firstCap.length());
                    String firstCap3=firstCap1+firstCap2;
                    sql_details = "select * from dealernetwork where city= '"+upper+"' or city='"+firstCap3+"' or city= '"+lower+"' and stateid IN (select distinct stateid from dealernetwork where state = '"+reqState+"' )";
//out.println("query "+sql_details);
                    rs_details = conb.getResult(sql_details);               %>                                             <br>               <%
                    boolean dispHead=true;                    while(rs_details.next())                        {
                         if(dispHead)                         {                              dispHead = false;               %>
               <span class="txt07">
                  Listing of addresses corresponding to the selected cities are as</span>
                              <br>               <% }%>               <br />
               <table border="0" cellpadding="2" cellspacing="1" width="90%">
                  <tr>                    <td width="18%" align="right" border
                    bordercolorlight="#000000" bordercolordark="#000000" bgcolor="#B5D2CA" class="txt07"><b>Name</b></td>
                    <td width="82%" align="left" bordercolorlight="#000000"
                    bordercolordark="#000000" bgcolor="#D2E3DE" class="txt07" border>
                       <%                         out.println(rs_details.getString(3).toUpperCase());                       %>
                                           </td>                  </tr>                  <tr>                    <%
                         address = ""+rs_details.getString(4);                         if(!(address.equals("null")))
                         {                              String s1 = address+" "+address.toLowerCase();
                              String f1 = (s1.substring(0,1)).toUpperCase();
                              String s2 = s1.substring(1,s1.length());
//                                 address=f1+s2;                              address = address.toUpperCase();
                         }
                         /*                                                if(!(rs_details.getString("address2").equals("null")))
                         {                         address = address +" "+ rs_details.getString("address2");
                         address =address.toLowerCase();                                                  }
                         if(!(rs_details.getString("address3").equals("null")))                         {
                         address = address +" "+ rs_details.getString("address3");
                         address =address.toLowerCase();                                                  }*/                    %>
                    <td width="18%" align="right" border
                    bordercolorlight="#000000" bordercolordark="#000000" bgcolor="#B5D2CA" class="txt07"><b>Address</b></td>
                    <td width="82%" align="left" bordercolorlight="#000000"
                    bordercolordark="#000000" bgcolor="#D2E3DE" class="txt07" border>
                       <%if(!address.equals(""))                       {%><%=address%><%}%>
                    </td>                  </tr>                  <tr>
                    <td width="18%" align="right" border
                    bordercolorlight="#000000" bordercolordark="#000000" bgcolor="#B5D2CA" class="txt07"><b>Phone</b></td>
                    <td width="82%" align="left" bordercolorlight="#000000"
                    bordercolordark="#000000" bgcolor="#D2E3DE" class="txt07" border>
                       <%                         String phone=""+rs_details.getString("phone");
                         if(!(phone.equals("null")))                       {%>                       <%=phone%><%}else
                       {%>N.A.<%}%></td>                  </tr>
                  <tr><td>&nbsp;</td></tr>               </table>
               <%                    }               }                         }          catch(Exception e)          {               out.println("Error"+e);          }
               %></td>          </tr>          <tr>
             <td colspan="2" align="right">                                                                         </td>          </tr>
        </table></form>

<pre/>
Regards
Ashish Bhatia

modified on Wednesday, June 3, 2009 8:05 AM

Re: need help geeting a nullpointerexeption

Nagy Vilmos3-Jun-09 2:00

Nagy Vilmos

3-Jun-09 2:00

0. Use the <pre> tag to format you rcode; hint look below for

code block

1. Make sure the code is pasted in correctly; again you can ignore the HTML tags if you tick the box below.

Then, and only the, you *might* get some advice.

Panic, Chaos, Destruction.
My work here is done.

Re: need help geeting a nullpointerexeption [modified]

ItIsFinished4-Jun-09 12:13

ItIsFinished

4-Jun-09 12:13

Looking at his code, he mis-typed his closing "pre" tag. A simple human error!

modified on Thursday, June 4, 2009 6:33 PM

Re: need help geeting a nullpointerexeption

Nagy Vilmos5-Jun-09 3:46

Nagy Vilmos

5-Jun-09 3:46

ItIsFinished wrote:
A simple human error!

A simple human would fix it.

Panic, Chaos, Destruction.
My work here is done.

Mobile Application

cdpace2-Jun-09 23:40

cdpace

2-Jun-09 23:40

Hello guys,

I am developing a mobile application and in this application i need to read an XML file. Now im trying to add the following packages to read an xml file:

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

After trying to import these packages NETBEANS 6.5 gives me the following error message javax.xml.parser not found.

When i try to use these packages in a normal java applicaion it works fine but when using them with the mobile applicatoin the above mentioned error comes up. Can anyone tell me how I can fix this or if there is any other solution? sorry for the trouble but I am a bit new to java.

Re: Mobile Application

Nagy Vilmos3-Jun-09 0:08

Nagy Vilmos

3-Jun-09 0:08

~~Without firing up google, I think you'll find that the whole of javax is not part of Java ME.~~
blox. It is supported, see here[^]

That may help you. All I can guess then is you have got part of the J2ME SDK missing/not installed?

Panic, Chaos, Destruction.
My work here is done.

retrieving selected item from jComboBox in jTable

Denis J. González1-Jun-09 9:16

Denis J. González

1-Jun-09 9:16

Hello, I have successfully used jComboboxes as cell editors in a jtable using the code below which is all in one method.

My question is, how can i get the item (or index for that matter) selected in the combobox that's inside the jtable?

Using table.getmodel().getvalueat() doesn't seem to work.

Thanks!

 DefaultTableModel model = new DefaultTableModel()  {
        @Override
            public boolean isCellEditable(int row, int col) {
                if(col>2)
                    return false;
                return true;
            };
        };


TableColumn col;
int vColIndex,width;
JComboBox comboBox;
TableColumn colcombo;


colcombo = jTable1.getColumnModel().getColumn(2);
comboBox = new JComboBox();
comboBox.addItem("Iniciado");
comboBox.addItem("En proceso");
comboBox.addItem("Consolidado");
colcombo.setCellEditor(new DefaultCellEditor(comboBox));

Re: retrieving selected item from jComboBox in jTable

darkdragn1-Jun-09 9:25

darkdragn

1-Jun-09 9:25

My apologies if I'm wrong, I'm at work and can't check out the API right now.(navy so I'm not allowed any excess material here) But the method should be as simple as

comboBox.getSelectedItem(); //should return an Object, cast it to String if need be
//or
comboBox.getSelectedIndex();

I hope this helps, have a good day. (It's just off of the top of my head.)

Re: retrieving selected item from jComboBox in jTable

Denis J. González1-Jun-09 9:43

Denis J. González

1-Jun-09 9:43

You'd think that, but no. :S

I tried that and it works only for the selected item in the LAST combobox that was modified, but when you have more than one row in a jtable and each one of those rows has a combobox that's referenced by the same variable (combobox) it only returns the last change that was made to the object.

What I need to do is I have a jtable and I need to go through all of the rows to record those values in a database.

Mobile Programming

Sourie30-May-09 19:28

Sourie

30-May-09 19:28

I want to try a simple program with java for my Nokia cell phone. Is there anybody to help me?

Sourie

Re: Mobile Programming

raheela12331-May-09 1:22

raheela123

31-May-09 1:22

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

/**
* @author Internet
*/
public class Midlet123 extends MIDlet implements CommandListener{
private Command Ok;
private Display dis;
private Form form;
public Midlet123()
{
dis=Display.getDisplay(this); form=new Form("My First Middlet");
Ok=new Command("Exit",Command.OK, 1);

form.setCommandListener(this);

}
public void startApp() {
dis.setCurrent(form);

}

public void pauseApp() {
}

public void destroyApp(boolean unconditional) {
}

public void commandAction(Command arg0, Displayable arg1) {
if(arg0==Ok)
{
destroyApp(true);
notifyDestroyed();
}
}
}
Laugh | :laugh:

problem in do-while loop

kenna18030-May-09 4:58

kenna180

30-May-09 4:58

The loop cant be stop eventho the key-in matches. Can anyone fix this and tell me my mistake?
Greatly appreciate it if so!

<br />
import java.io.*;<br />
<br />
public class A<br />
{<br />
public static void main(String args[]) throws IOException<br />
{<br />
BufferedReader stdin=new BufferedReader (new InputStreamReader(System.in));<br />
//char n,p;<br />
String name,pwd;<br />
int n1;<br />
int p2;<br />
<br />
System.out.println("\tWelcome to  ");<br />
System.out.println("*******SHINE IT Training Centre*******");<br />
System.out.println("**Please login before u calculate**");<br />
<br />
do<br />
{<br />
System.out.println("Enter user name: ");<br />
name=stdin.readLine();<br />
n1=Integer.parseInt(name);<br />
System.out.println("Enter password: ");<br />
pwd=stdin.readLine();<br />
p2=Integer.parseInt(pwd);<br />
<br />
//System.out.println("Incorrect input!!");<br />
} while ((name!="2208")&&(pwd!="1234"));<br />
<br />
<br />
System.out.println("Successful Login!!");<br />
<br />
}<br />
}<br />

Re: problem in do-while loop

raheela12331-May-09 1:15

raheela123

31-May-09 1:15

eigther change

while ((name!="2208")&&(pwd!="1234"));

to

while ((!name.equals("2208"))&&(!pwd.equals("1234")));

or

while ((n1!=2208)&&(p2!=1234));

Poke tongue | ;-P

Re: problem in do-while loop

kenna18031-May-09 7:04

kenna180

31-May-09 7:04

oic! Thank you very much!! Laugh | :laugh:

Using NetBeans IDE

Reagan Conservative29-May-09 11:03

Reagan Conservative

29-May-09 11:03

I have a class JPanel that I want to add other JPanels onto during run-time. I can add a JPanel using the NetBeans IDE for "design", but the IDE will not let me dynamically add a new JPanel and let me position it on the main JPanel . When I look at the documentation, it appears that there are inherited methods that would allow this type of operation, such as setLocation(int, int). The IDE complains about this method, and the list of available methods that appears when editing the code, has a very limited set. Is there a way around this using the IDE?

Thanks for your time.

AF Pilot

Re: Using NetBeans IDE

fly90429-May-09 11:32

fly904

29-May-09 11:32

Reagan Conservative wrote:
I have a class JPanel

I would rename your class to something more appropriate if I were you.

If you have a look at the code Netbeans generates with the designer, then you will see something which looks like this.

JPanel jp = new JPanel();

//Set jp properties

[InsertParentControlHere].add(jp);

Add that in the code where you need it.

My failometer has shot off the end of the scale!

I seem to have misplaced my ban button.. no wait... found it!

Re: Using NetBeans IDE

Reagan Conservative29-May-09 11:36

Reagan Conservative

29-May-09 11:36

I was just using this as a generic example. The actual name is not JPanel. I was going to try and use this "JPanel" to draw graphics on and place it on another "JPanel". I think that the better approach is just to draw directly to the "JPanel" without adding a whole bunch of smaller "JPanel"s.

Thanks for replying.

AF Pilot

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.