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- 2
- JSP questionshave some questions about JavaServer Pages to ask
1. I made several input fields for user to input the height, width and
other stuff to create a table. how can I make the font in color red in
first row and first column automaticly and font in other rows and
columns remain the same color?
2. I want to add a title inside the table that need to colspan the
rest of the table. Becasue I don't know what # the user will input for
columns, so I can't set it before user input. so plz help me on this.
3. Randomly place an input field in one of the cells ?a different
cell on each refresh. If the user enters the correct product there and
changes the focus (by clicking outside the field), a Javascript
provided by the jsp page checks the answer and makes appropriate alert
My jsp file looks like this:
<HTML>
<head></head>
<BODY>
<%
String s2 = request.getParameter("Bsize") ;
s2 = s2.trim();
out.print("<table bgcolor=silver border= ");
out.print(s2);
out.print(" ");
String s3 = request.getParameter("Bcolor") ;
s3 = s3.trim();
out.print("bordercolor= ");
out.print(s3);
out.print(">");
String m1 = request.getParameter("mName") ;
m1 = m1.trim();
int M = Integer.parseInt(m1);
String n1 = request.getParameter("nName") ;
n1 = n1.trim();
int N = Integer.parseInt(n1);
String s = request.getParameter("FullName") ;
s = s.trim();
out.println("<font color=red size=6>");
out.println(s);
out.println("'s table is: </font>");
out.println("<tr colspan= ");
out.print(m1);
out.println(">");
out.print("<th> Numbers </th> </tr>");
for (int i =1; i<= M; i++ )
{
out.println("<tr width= 10 >");
for (int j =1; j<= N; j++ )
{
out.println("<th >");
out.println(j * i);
out.println("</th>");
}
out.println("</tr>");
}
%>
</table>
- 3
- Baffling class not found problemHello, I'm using Java 1.3 with WebLogic 5.1 on Solaris. I have these
files:
cms/system/CMSException.class
cms/system/Constants.class
cms/system/InitServlet.class
cms/system/Log.class
When I include this line on my JSP page
<%@ page import="cms.system.*" %>
everything compiles fine. As does this line
<%@ page import="cms.*" %>
but when I try
<%@ page import="cms.system.Constants" %>
(r using any of the 4 class names above) I get the error:
Compilation of '/tmp/support/jsp_servlet/_www/__temp.java' failed:
/tmp/support/jsp_servlet/_www/__temp.java:16: Class
cms.system.Constants not found in import.
probably occurred due to an error in /www/temp.jsp line 1:
<%@ page import="cms.system.Constants" %>
How can this be? The perms on the files above are all 775. Can anyone
think of an explanation for why these files can't be found?
Thanks, - Dave
- 7
- Grab common name from https://[ip]Hello,
I checked around on here a bit, and was unable to find an answer to
this one by searching for the error message. I'm hoping someone here
can help me with this issue.
I am attempting to gather the common name from an SSL certificate for a
given IP address. Following is the code I am using thus far (two
classes being used):
IP_Justification.java:
import java.net.*; //for https connection
import java.io.*; //for input parsing
import javax.net.ssl.HttpsURLConnection;
public class IP_Justification
{
private String IP; //IP address to search
private String domain; //common name returned by viewing IP via
https://ip
//default constructor
public IP_Justification()
{
throw new IllegalArgumentException("Please provide IP and domain");
}
//create with IP provided
public IP_Justification(String ip)
{
IP = ip;
domain = "";
}
public void getDomain() throws IOException
{
String urlToCheck = "https://" + IP;
URL techURL = new URL(urlToCheck);
System.out.println("URL created: " + techURL);
HttpURLConnection techUrlConn =
(HttpURLConnection)techURL.openConnection();
System.out.println("HttpURLConnection created" + techUrlConn + "\n");
techUrlConn.connect();
}
}
IPJustMain.java
import java.io.*;
public class IPJustMain
{
public static void main(String[] args) throws IOException
{
IP_Justification testing;
testing = new IP_Justification("64.233.167.99");
testing.getDomain();
try
{
}
catch(Exception e)
{
System.out.println("Start of output - Exception block");
System.out.println(e.getMessage());
System.out.println("End of output - Exception block");
}
}
}
Following is the output received when running IPJustMain:
URL created: https://64.233.167.99
HttpURLConnection
createdsun.net.www.protocol.https.DelegateHttpsURLConnection:h
ttps://64.233.167.99
Exception in thread "main" java.io.IOException: HTTPS hostname wrong:
should be
<64.233.167.99>
at
sun.net.www.protocol.https.HttpsClient.checkURLSpoofing(HttpsClient.j
ava:490)
at
sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:
415)
at
sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect
(AbstractDelegateHttpsURLConnection.java:170)
at
sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLCon
nectionImpl.java:133)
at IP_Justification.getDomain(IP_Justification.java:54)
at IPJustMain.main(IPJustMain.java:15)
Press any key to continue . . .
I fully expect to have an exception thrown, and am hoping to be able to
parse that for the information I require. The problem I am running
into is the exception itself:
Exception in thread "main" java.io.IOException: HTTPS hostname wrong:
should be
<64.233.167.99>
It seems to be responding with the URL I pass to it, and not the common
name for the SSL at the specified IP address.
Anyone happen to know if there is a way around this or if my code is
flawed in someway?
Thanks for any help that can be provided!
- 10
- Sunspot: Java Virtual Machine Implementation Vulnerability``SUN Java Virtual Machine Implementation Vulnerability
We have found a security vulnerability in the SUN's implementation of
the Java Virtual Machine, which affects the following SDK and JRE
releases:
- SDK and JRE 1.4.1_03 and earlier
- SDK and JRE 1.3.1_08 and earlier
- SDK and JRE 1.2.2_015 and earlier.
SUN was informed about this issue on June the 2nd 2003 and has already
addressed it in their latest SDK/JRE versions. Please, see Sun Alert
Notification numbered 57221 for more information about the patched
SDK/JRE releases. [...]
The described vulnerability allows for the creation of a malicious
applet that could *completely* bypass applet sandbox restrictions. We
developed proof of convept code which successfully exploited this
vulnerability in Netscape 6 and 7 as well as Mozilla web browsers
environment using vulnerable versions of JRE Plugin. [...]''
- http://www.net-security.org/vuln.php?id=3018
Sun's page on the problem:
``A Vulnerability in JRE May Allow an Untrusted Applet to Escalate Privileges''
- http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F57221&zone_32=category%3Asecurity
--
__________
|im |yler http://timtyler.org/ email***@***.com Remove lock to reply.
- 12
- <defunct> processesI've got a problem with <defunct> (zombie) processes on Linux...
I'm running child processes using Runtime.exec() and it usually goes well.
But just sometimes (undefined sometimes), process finishes as defunct. Is
there anything I can do about it? I suck out both inputStream and
errorStream, check Process.exitValue(), but it stucks on Process.waitFor().
I even try to suck these streams in separate threads, but it doesn't help.
I had the idea to detect if the process has stucked, and then try from
another thread to Process.destroy(), but it didn't help! Destroy does
nothing, process is still defunct, and waitFor() blocks it again... There
are no more methods in class Process to try, and I've already tried all the
combinations of existing ones...
Newsgroups and web are full of similar questions, but no answer. They all
say that a process is zombie if it is finished, but parent process hasn't
yet read the exit code. But I do read exitValue, and I also do
Process.waitFor(). Can I consider this a bug in Java VM?
Where could find the solution? Which direction should I go? I've been trying
for months, but no results...
Now, this is the latest version of code, as seen on java.sun.com...
{
...
Process process = Runtime.getRuntime().exec(commandLine);
inputVacuum = new TextVacuum(process.getInputStream());
errorVacuum = new TextVacuum(process.getErrorStream());
process.waitFor();
int exitValue = process.exitValue();
...
}
public class TextVacuum extends Thread {
private BufferedReader reader;
private StringBuffer buffer = new StringBuffer();
...
public TextVacuum(InputStream inStream) {
reader = new BufferedReader(new InputStreamReader(inStream));
start();
}
public void run() {
try {
char[] cbuf = new char[4096];
int numRead = reader.read(cbuf);
while (numRead != -1) {
buffer.append(new String(cbuf, 0, numRead));
numRead = reader.read(cbuf);
}
}
catch (IOException e) { }
finally {
try { reader.close(); }
catch (IOException e) { }
reader = null;
}
}
...
}
Thanks!
- 12
- AccessControlException
The following is a snippet from a method in an applet RSSTree:
private Document getOPMLFile(String OPMLFileName) {
Document OPMLFile = null;
try {
URL u = new URL(getCodeBase(), OPMLFileName);
try {
BufferedReader br = new BufferedReader(new
InputStreamReader(u.openStream()));
if (br != null) {
try {
Builder parser = new Builder();
OPMLFile = parser.build(br);
}
.
.
.
This method is called out of RSSTree.start(). Document & Builder are
classes in the open source XML processor com.nu.xom. I get the following
error when parser.build(br) is executed:
java.lang.ExceptionInInitializerError
at RSSTree.getOPMLFile(RSSTree.java:63)
at RSSTree.start(RSSTree.java:31)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.security.AccessControlException: access denied
(java.util.PropertyPermission
org.apache.xerces.xni.parser.XMLParserConfiguration write)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.System.setProperty(Unknown Source)
at nu.xom.Builder.<clinit>(Unknown Source)
If I replace the bad line with a loop to read the the stream myself and
write out the lines, I get the XML I expect.
Without seeing the source for XOM can someone give me an idea as to why I
have an access problem when going through XOM but don't when the applet
reads directly?
Thanks.
Ken
- 12
- Can we change enctype dynamically??Hello all,
Can we change enctype in the form tag using javascript
document.formname.enctype = 'variable' variable being
multipart/form-data or application/x-www-form-urlencoded. I can do
this in Netscape7 not in IE6 ??
My problem is when I am in the rendered page of type
mulipart/form-data, I have to call another servlet (which process
regular form fields only). When I do that it breaks.
If I use all my servlets to process enctype=mulipart/form-data jsp's
is there any performance or any kind of issues???
Any help will be appreciated.
Thanks - gsr
- 12
- Applet file readinghello every one;
i m making an applicaion by using java Applet, on which i wish to open
a file from users system, but i dont know how to do this;
is any one have any idea about reading files on users system by using
Applet.
- 13
- Learning Apache Ant, problems with Swing(?)I'm attempting to learn Apache Ant (apache-ant-1.6.1); OS Linux Fedora
Core 2; j2sdk1.4.2_04. I appear to have problems with Ant + Swing, but
each work separately.
The following is my first build file (copied from the web).
<?xml version="1.0"?>
<!-- build file for lesson 1 -->
<project name="tutorial" default="build" basedir=".">
<target name="build">
<javac srcdir="." />
</target>
</project>
Works fine on a simple Java program, e.g.
import java.io.*;
public class Hello {
public static void main(String args[]) {
System.out.println("Hello");
}
}
However, when I progress to anything involving Java Swing, I get
compilation errors like:
[javac] /home/jc/java/classes/anttest/GuiScreens.java: In method
`GuiScreens.main(java.lang.String[])':
[javac] /home/jc/java/classes/anttest/GuiScreens.java:24: error:
Can't find constructor
`javax.swing.JFrame(Ljava/lang/String;Ljava/awt/GraphicsConfiguration;)'
in type `javax.swing.JFrame'.
[javac] frame[j][i] = new JFrame("Config: " + i,
gc[i]);
/This program compiles okay using javac./
(BTW jc@localhost~/java/classes/anttest>$ echo $ANT_HOME
/usr/apache-ant-1.6.1
jc@localhost~/java/classes/anttest>$ echo $JAVA_HOME
/usr/java/j2sdk1.4.2_04)
Any ideas?
TIA,
Jon C.
- 14
- Midlet TextBox-------------------
TextBox tb = new TextBox("title", null, 5, TextField.DECIMAL);
tb.addCommand(new Command("Ok", Command.BACK, 0));
tb.setCommandListener(this);
Display dis = Display.getDisplay(this);
dis.setCurrent(tb);
-------------------
The code above shows (in my mobile Sony Ericsson K300i) a TextBox with 2
Commands "Ok" and "Ok".
If TextBox is empty of chars, first "Ok" is grayed but second not.
I suspect that the first Command "Ok" is part of TextBox (Screen) and
when I press it, it does nothing and commandAction method does not run.
Only when I press the second Command "Ok" commandAction method runs.
So, first "Ok" is "feature" of my mobile or it is in MIDP Specification?
If the second, how can I get access to this Command?
- 14
- Whatever happened to PvdL?My curiosity about Hotjava now sated, what of Peter van der Liden? I recall
that he used to be pretty active on Usenet and quite a prolific author and
Java advocate.
As I recall he used to author the Java FAQ (which now 404's). I liked his
writing style (dating to the ugly fish book) and the Just Java series. The
6th edition came out in 2004 and no errata has published since January
2005.
Is Mr. van der Liden still active in the Java community? I realize he's no
longer with Sun and without treading into personal matters, did he have a
falling out with the people there? In spite of being published by Sun, his
Java books did contain quite a few barbs about misfeatures in the language.
- 14
- How to speed up the Portal development in eclipseHi all,
I am new in portal development. I am used to Eclipse to write Java
standalone application, but no server contained application such as
servlet.
Is there any way to setup a integrated development environment with
JetSpeed in Eclipse to do portal environment?
Please enlighten me.
Thanks in advance for your inputs and ideas.
Eclifeww
- 15
- Why does this query take forever?For some reason, I have a rather large (to me) query, with numerous inner
joins, accessing a remote server, and it is taking about twenty times longer
than most queries to the same database.
The query itself is built programmatically within my application, and
example of which is below. I am hoping someone in the group may have some
insight into why this query is so slow, suggesting perhaps a better
structure for it, such that I can go back in and rewrite my code that
creates such queries.
Thanks in advance, Ike
"SELECT DISTINCT
chronology.id,status_id.status,chronology.completed,chronology.completeddate
,chronology.completedtime,activities_id.activity,chronology.activities_activ
ity,chronology.activities_attachment,chronology.activities_available_to_all,
chronology.upcards_firstnamelastname,upcard_id.id,chronology.feedbackrequire
d,chronology.landondate,chronology.hasspecifictime,chronology.datetoperform,
chronology.timetoperform,chronology.duration,chronology.weekends,chronology.
prefix,statusactivitieisid.id,associateresponsible.username,activities_usern
ameid.username,chronology.editFlag FROM
chronology,status,activities,upcards,statusactivities,associates
INNER JOIN status status_id on chronology.status_id=status_id.id
INNER JOIN activities activities_id on
chronology.activities_id=activities_id.id
INNER JOIN upcards upcard_id on chronology.upcard_id=upcard_id.id
INNER JOIN statusactivities statusactivitieisid on
chronology.statusactivitieisid=statusactivitieisid.id
INNER JOIN associates associateresponsible on
chronology.associateresponsible=associateresponsible.id
INNER JOIN associates activities_usernameid on
chronology.activities_usernameid=activities_usernameid.id
WHERE chronology.upcard_id = 18"
- 15
- free E-book linksdear friends,
this link will help full see more number of E-books use this
http://www.apsira.com/etc/usefulllinks.php?keyid=5.1
- 15
- imageicon problemHello,
I have problem with loading an image from a directory.
I got a folder called images wich is located in my project directory :
c:\MijnJava\Swing_01.
But when i start this application i get a window with a title and in this
window a square that indicates that the picture is not found. Earlier i set
my classpath : set classpath= .;c:\MijnJava; this is in windows xp.
I am using Jcreator. The code works fine on my computer in school but not at
home.
I tryed moving the folder images to other directorys but with no luck.
What is the problem with this?
Can anyone help?
thanks
Tom
import javax.swing.*;
import java.awt.*;
import javax.swing.border.*;
import tomwouters.myswingutils.*; This is a folder where my packages
are.
public class Afbeelding_01 extends ExitableJFrame{
public Afbeelding_01(String titel){
super(titel);
TitledBorder paneelBorder =
BorderFactory.createTitledBorder("JPanel");
Container container = getContentPane();
JPanel paneel = new JPanel();
paneel.setBorder(paneelBorder);
JLabel label = new JLabel();
JLabel label2 = new JLabel();
ImageIcon afbeelding = new ImageIcon("images/jugg23.gif");
label.setIcon(afbeelding);
TitledBorder labelBorder =
BorderFactory.createTitledBorder("JLabel met jugg23.gif");
label.setBorder(labelBorder);
paneel.add(label);
container.add(paneel);
pack();
}
public static void main(String[] args) {
Afbeelding_01 frameMetAfbeelding = new Afbeelding_01("Afbeelding_01");
frameMetAfbeelding.setVisible(true);
}
}
|
| Author |
Message |
Eran.Yasso
|
 Posted: 2005-9-15 1:31:00 |
Top |
java-programmer, Get installed app
Hi,
I want to write an app but I'm not sure if I should use Java.
The app is a crossed platform.
My questions:
1.Can Java return me the name/position of install app on the OS it
supports?
2. Does Java supports the following OS:
Unix/GTK+ , Unix/Motif and X11 , Mac OS , MGL and OS/2 ?
TIA.
Eran
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jan V
|
| Posted: 2005-9-15 2:26:00 |
Top |
java-programmer >> Get installed app
> 2. Does Java supports the following OS:
> Unix/GTK+ , Unix/Motif and X11 , Mac OS , MGL and OS/2 ?
OS/2 ? Is your boss telling you your app has to support this?
MGL? What's that?
The Java platform runs on all modern OSes... UNIX/Win32/Mac, and plenty
more. Full list can be found on Sun's Java website java.sun.com.
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Joan
|
| Posted: 2005-9-15 3:11:00 |
Top |
java-programmer >> Get installed app
<email***@***.com> wrote in message
news:email***@***.com...
> Hi,
>
> I want to write an app but I'm not sure if I should use Java.
> The app is a crossed platform.
> My questions:
> 1.Can Java return me the name/position of install app on the OS
> it
> supports?
> 2. Does Java supports the following OS:
> Unix/GTK+ , Unix/Motif and X11 , Mac OS , MGL and OS/2 ?
OS/2 is officially been placed in the dust bin. Don't use it if
at all possible.
What do you mean by "position of install app?" The swap buffer?
The memory location?
Probably the memory is virtual.
>
> TIA.
> Eran
>
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Roedy Green
|
| Posted: 2005-9-15 3:29:00 |
Top |
java-programmer >> Get installed app
On 14 Sep 2005 10:30:46 -0700, email***@***.com wrote or quoted :
>I want to write an app but I'm not sure if I should use Java.
>The app is a crossed platform.
>My questions:
>1.Can Java return me the name/position of install app on the OS it
>supports?
There is no such thing as install app. You install Java apps just
copying a jar file or downloading it. In Java Webstart you might write
an "install" class that runs the first time the program is used.
You can use traditional installers that install the app plus the Java
runtime.
>2. Does Java supports the following OS:
>Unix/GTK+ , Unix/Motif and X11 , Mac OS , MGL and OS/2 ?
It may sound like a play on words, but Java supports everything. The
question is, what supports Java? Sun directly provides Java support
for Java 1.5 on Solaris, Windows, Linux. There are 32 bit and 64 bit
versions.
Apple provides support for Mac OS.
IBM proves support for up to Java 1.3 for OS/2.
HP provides support for up to Java 1.4 for Unix-Motif and X11.
I have never heard of MGL. Try googling "Java MGL"
--
Canadian Mind Products, Roedy Green.
http://mindprod.com Again taking new Java programming contracts.
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Eran.Yasso
|
| Posted: 2005-9-15 4:08:00 |
Top |
java-programmer >> Get installed app
Joan wrote:
> <email***@***.com> wrote in message
> news:email***@***.com...
> > Hi,
> >
> > I want to write an app but I'm not sure if I should use Java.
> > The app is a crossed platform.
> > My questions:
> > 1.Can Java return me the name/position of install app on the OS
> > it
> > supports?
> > 2. Does Java supports the following OS:
> > Unix/GTK+ , Unix/Motif and X11 , Mac OS , MGL and OS/2 ?
>
> OS/2 is officially been placed in the dust bin. Don't use it if
> at all possible.
> What do you mean by "position of install app?" The swap buffer?
> The memory location?
> Probably the memory is virtual.
>
> >
> > TIA.
> > Eran
> >
By saying "position of install app?", I want to know if there's an API
in Java which returns all the applications user installed on his/her
machine. I'm not refering only to WinNT.
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Roedy Green
|
| Posted: 2005-9-15 5:00:00 |
Top |
java-programmer >> Get installed app
On 14 Sep 2005 13:07:49 -0700, email***@***.com wrote or quoted :
>By saying "position of install app?", I want to know if there's an API
>in Java which returns all the applications user installed on his/her
>machine. I'm not refering only to WinNT.
On Windows it is sort of recorded in the registry but what a mess! It
would be very difficult to extract say the name of each app and the
main executable. Not all apps are recorded there.
You could scan the disk looking for exe and com files but that would
include all kinds of things you would never recognise.
On Linux you have various ways of installing programs so no easy way
of generating a list.
--
Canadian Mind Products, Roedy Green.
http://mindprod.com Again taking new Java programming contracts.
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Oliver Wong
|
| Posted: 2005-9-15 5:27:00 |
Top |
java-programmer >> Get installed app
"Roedy Green" <email***@***.com> wrote in message
news:email***@***.com...
> On 14 Sep 2005 13:07:49 -0700, email***@***.com wrote or quoted :
>
>>By saying "position of install app?", I want to know if there's an API
>>in Java which returns all the applications user installed on his/her
>>machine. I'm not refering only to WinNT.
[snip]
> On Linux you have various ways of installing programs so no easy way
> of generating a list.
More generally, Linux allows you to mark script files as executable,
thus blurring the difference between a program and a data file. Depending on
your definition of "installed", a script file might be "installed", but NOT
marked as executable. And given that no one knows every single scripting
language in existence, it's impossible to determine for sure whether a given
file is a program or not.
In other words, what the OP wants to do is probably not possible in
theory, and probably not feasible in practice, regardless of what
programming language is used.
- Oliver
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Eran.Yasso
|
| Posted: 2005-9-15 15:02:00 |
Top |
java-programmer >> Get installed app
I see.
Thanks for your help guys.
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Index ‹ java-programmer |
- Next
- 1
- optimizing java compilerHi!
As the -O option of javac does nothing and Sun obviously think it can affort
not to do so, which compiler is known to optimize bytecode well? Jikes?
eclipse? What about AspectJ?
Regards
Timo
- 2
- Vowel Counter ProgramHey,
I am trying to write a basic program that counts how many lowercase
vowels and non-vowels are in a string. I'm trying to use the
StringTokenizer function. Also, I have to prompt the user again by
using a do while loop. The string ends with the string "DONE".
Here's my code. If anyone could help me, please do. Thanks.
import cs1.Keyboard;
import java.util.StringTokenizer;
class vowelCounter;
{
public static void main(String[] args)
{
// Initialize Answer to Zero
int answer = 1;
do // Start the do loop
{
// Declare all variables and set counters to zero
int aCounter = 0;
int eCounter = 0;
int iCounter = 0;
int oCounter = 0;
int uCounter = 0;
int nonVowelCounter = 0;
String line, temp;
int letter;
StringTokenizer tokenizer;
// Prompt the user for String and read string
System.out.print ("Please enter text (Type DONE to quit):
");
line = Keyboard.readString();
while (!line.equals("DONE"))
{
tokenizer = new StringTokenizer (line);
while (tokenizer.hasMoreTokens())
{
temp = tokenizer.nextToken();
letter = temp.length();
for (int i=0; i<=letter; i++)
{
// Increment vowel counters
if (line.charAt(i) == 'a')
aCounter++;
else if (line.charAt(i) == 'e')
eCounter++;
else if (line.charAt(i) == 'i')
iCounter++;
else if (line.charAt(i) == 'o')
oCounter++;
else if (line.charAt(i) == 'u')
uCounter++;
else
nonVowelCounter++;
}
}
line = Keyboard.readString();
}
// Print out number of vowels and non-vowels
System.out.println ("Number of 'a': " +aCounter);
System.out.println ("Number of 'e': " +eCounter);
System.out.println ("Number of 'i': " +iCounter);
System.out.println ("Number of 'o': " +oCounter);
System.out.println ("Number of 'u': " +uCounter);
System.out.println ("Number of non-vowels: "
+nonVowelCounter);
// Prompt the User About Continuing
System.out.print ("Do you want to continue?
(0=exit/1=continue) ");
answer = Keyboard.readInt();
System.out.println ("");
}while (answer == 1);
}
}
- 3
- Phara3omacy news
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- 4
- getting starting with ...... Java
I am newbie of sorts: I'm familiar with java to a some extent, but I have
never had the chance to use it. Which means, I'm not as comfortable with
it as I am with other languages (php,asp,python,c,perl,etc). What is the
best way to get comfortable? Is there any particular direction I should be
heading? I never read a book from start to end, unless it's a novel, so
with other programming languages I've learnt the fundamentals, and the
bits and pieces here and there as needed. Database connectivity, web
(server based) apps are of interest as most work I do is related to these.
Current projects include pulling stats from a database (Postgres,mysql) in
python and, a web credit card payment system in php. Im also maintaining
one of our "legacy" systems in perl.
I have lots of time, and I want use doing something productive in java,
that is my aim.
Directions will be helpfull....
--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
- 5
- java/121420: Java applet fails to find class
>Number: 121420
>Category: java
>Synopsis: Java applet fails to find class
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-java
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Mar 06 08:10:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator: Andrew Reilly
>Release: FreeBSD 7.0-STABLE amd64
>Organization:
>Environment:
System: FreeBSD duncan.reilly.home 7.0-STABLE FreeBSD 7.0-STABLE #3: Sat Mar 1 17:44:29 EST 2008 root@duncan:/usr/obj/usr/src/sys/DUNCAN amd64
A 3G Athlon64-X2.
>Description:
An attempt to use a java client from within firefox,
while connecting to a Juniper ssl VPN service fails with
this message in the java log. (The same service works OK
with firefox on a MacOS-X laptop.):
Java Plug-in 1.6.0_03-p4
Using JRE version 1.6.0_03-p4 Java HotSpot(TM) 64-Bit Server VM
User home directory = /usr/home/andrew
----------------------------------------------------
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
p: reload proxy configuration
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------
load: class de.mud.jta.Applet not found.
java.lang.ClassNotFoundException: de.mud.jta.Applet
at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:183)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:127)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:626)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:780)
at sun.plugin.AppletViewer.createApplet(AppletViewer.java:2074)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:709)
at sun.applet.AppletPanel.run(AppletPanel.java:363)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.net.ConnectException: Invalid argument
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.Socket.connect(Socket.java:519)
at sun.net.NetworkClient.doConnect(NetworkClient.java:155)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:529)
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:271)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:328)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:172)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:729)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:158)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:977)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:373)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:318)
at sun.applet.AppletClassLoader.getBytes(AppletClassLoader.java:284)
at sun.applet.AppletClassLoader.access$100(AppletClassLoader.java:44)
at sun.applet.AppletClassLoader$1.run(AppletClassLoader.java:173)
at java.security.AccessController.doPrivileged(Native Method)
at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:170)
... 9 more
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
- 6
- Creating MouseEventsHi,
I'm trying to dispatch interaction with a touch screen as a MouseEvent, but
I can't get java to register an event on components like the drop-down list
from a combo box, or invisble components that accept normal mouse click
events.
Thanks,
Andrew
- 7
- jsp:setProperty, java.io.File, and I thoroughly confusedHi,
I'm writing a webapp based on JSP technology. I've been doing
some reading and from what I've read, it isn't possible to use
jsp:setProperty to set a File property. So, I created a BeanInfo class
for the Bean I had the File variable in. I also created a class that
extended PropertyEditorSupport to assign the BeanInfo class to the
Bean. But, those don't appear to get called. I CAN, however with
Tomcat 5.0.28 on Windows XP, simply set a File property with
jsp:setProperty. The Bean ends up looking for the file in the Tomcat
bin directory, and I can thus set a relative path to the file. So, I'm
completely confused. What is going on? Is this expected behavior?
Thanks,
Jason Mazzotta
- 8
- Open Source quality better then closed?hi...
i just wondered, does the fact you write a product as open source,
forces you to write better code, in the hopes (fears?) that who ever
may see you code in the future will be impressed (shocked?)
- 9
- log4j - openning a new fileHi,
I need to open a new log file in a specific location in the code, how
can I do that?
Log file size and number of records are unknown so I cannot use this
information.
- 10
- Corrupted JPEG: DataInput/OutputStreamHi!
I download a JPG and write it to disk; this is rather old code which
certainly worked. The only thing I'm aware of that changed is JDK 1.4 ->
1.5b2. The written file is corrupt:
URL u = new URL ("http://foo/bar.jpg");
DataInputStream in = new DataInputStream
(u.openConnection().getInputStream());
File f = new File (foo);
FileOutputStream fs = new FileOutputStream (f);
DataOutputStream out = new DataOutputStream (fs);
for (int b; (b = in.read ()) != -1;)
{
out.write (b);
}
in.close();
fs.close();
out.close();
What's wrong? And, can I repair the corrupt files?
- 11
- illegalMonitorStateExceptionhello everybody!
it is well known that one has to be in the monitor of an object to call
myObj.wait(), f. E. by putting it into a synchronize(myObj) block.
my questions:
- is it bad programming style to just catch the exception without doing
the synchronize? because if i do this my program still perfectly does
what it should.
- why does this exception exist?
thanx a lot,
moritz.
- 12
- Make Java plugin SysTray icon visible ?I have a java plugin (for IntExp) browser which is currently for version 1.4.2_14b05
On some machines I noticed that the plugin shows an icon in the SysTray
on others not. How can I hide/unhide this Java plugin SysTray icon ?
Where are the files for this java plugin physically stored (in which directory) ?
Lars
- 13
- java with swinghello to all,
I have done a java component in Swing
I have included the java component as plugin and
embedded in applet for web based access. But it is not
visible in other clients.
It is visible in Only the server.
I read javaweb start's JNLP can do that (since I
didnot want to install anything jre like in client )
is it possible.
thank you in advance,
vishnu.
- 14
- 15
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Thanks
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