Can i use AT commnads in javax.telephony
I read abt javax.comm using with
AT commands.but can I use
AT commands in javax.telephony?
Is it require to hav TA that support
GSM 07.07....?
You can't cable connect a keyboard. You need a bluetooth wireless keyboard.
Cheers, Tom
Similar Messages
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Can we use javax.xml.parser API's from j2sdk kit?
Hi All,
I am new to this jaxp API's and my first doubt is Can I use the javax.xml.parser API which come bundled with j2sdk-1.4.1 or Should I install JWSDP-1.3 to get to javax.xml.parsers API?
ThanksHi,
I am trying to read an xml file on Solaris.
Can we not use doc.getElementById(String elementID) after deriving doc obejct ?
Here is the code I am trying to use:
try
factory = DocumentBuilderFactory.newInstance();
factory.setValidating(false);
File file = new File("/command/parse_doc.xml");
doc = factory.newDocumentBuilder().parse(file); //upto here it works
Element element = doc.getElementById("Topics");
String name = element.getTagName(); //returns nothing but throws exception "null"
}catch(Exception exe){
out.println("Exception:" + exe.getMessage());}
here I get no such element, and the try catch block exception also null.
Is there something I am missing?
DO I have to call doc.getDocumentElement() before I call get ElementBy ID() and if so why?
Thanks. -
Can you use CORBA Naming Service with javax.naming.event.EventContext?
Can you use CORBA Naming Service with javax.naming.event.EventContext?
It seems like it doesn't work. When I try to do something like
EventContext eCtx_ = (EventContext)namingCtx_.lookup("");
I'm using JacORB's naming service.
I just want to clarify that I cannot or can use javax.naming.event.EventContext with CORBA Naming Service.Can anyone tell me if it is doable or not doable.
I looked at the COSNaming SPI, and it seems like it doesn't implement javax.naming.event.EventContext.
Am I correct or not? -
Can't use import javax.swing.RowFilter; in javafx
Dear all,
I'm a question for you.
I developed a javafx application in which I use also swing dialog and swingx libraries.
The question is I can't use jtable filter of java jdf 1.6
That is when I try to add in my netbeans javafx project
import javax.swing.RowFilter;
it says me it's not correct library
If I create a java swing application I can add this include.
Why it?
I edited netbeans conf to set javafx sdk to javafx lib I downloaded (whole sdk), not that one with netbeans, but nothing.
It seems like I can't use this import in javafx application.
Is it posbbile?
Please help meThe reason you cannot use it is because javax.swing.RowFilter was introduced in Java 1.6 . Netbeans compiles JavaFX to work with Java 1.5, which does not have the class in question.
I have gotten around this by going to the properties->Libraries->Add JAR/Folder menu and included the jre/lib/rt.jar file from the jre directly into my project.
Someone else posted a similar solution and more detailed explanation here: http://steveonjava.com/hacking-javafx-10-to-use-java-16-features/ -
How can I use a 3rd party XML parser such as xerces with OC4J ?
Hi all tech experts,
I am using Oracle Application Server 10g Release 2 (10.1.2) and i have
installed Portal and Wireless and OracleAS Infrastructure on the same
computer.
i tried all the solutions on this thread
Use of Xerces Parser in out application with Oracle App Server 9.0.4
but still fighting.
I have also posted this query on OTN on following thread
How can I use a 3rd party XML parser such as xerces with OC4J?
but no reply....
Please help me on this issue.
Since OC4J is preconfigured to use the Oracle XML parser which is xmlparserv2.jar.
i have read the following article which states that
OC4J is preconfigured to use the Oracle XML parser. The Oracle XML parser is fully JAXP 1.1 compatible and will serve the needs of applications which require JAXP functionality. This approach does not require the download, installation, and configuration of additional XML parsers.
The Oracle XML parser (xmlparserv2.jar) is configured to load as a system level library of OC4J through it's inclusion as an entry in the Class-Path entry of the oc4j.jar Manifest.mf file. This results in the Oracle XML parser being used for all common deployment and packaging situations. You are not permitted to modify the Manifest.mf file of oc4j.jar.
It must be noted that configuring OC4J to run with any additional XML parser or JDBC library is not a supported configuration. We do know customers who have managed to successfully replace the system level XML parser and the Oracle JDBC drivers that ship with the product, but we do not support this type of configuration due to the possibility of unexpected system behavior and system errors that might occur from replacing the tested and certified libraries.
If you absolutely must use an additional XML parser such as xerces, then you have to start OC4J such that the xerces.jar file is loaded at a level above the OC4J system classpath. This can be accomplished using the -Xbootclasspath flag of the JRE.
i have also run the following command
java -Xbootclasspath/a:d:\xerces\xerces.jar -jar oc4j.jar
but no success.
How could i utilize my jar's like xerces.jar and xalan.jar for parsing instead of OC4J in-built parser ?
All reply will be highly appreciated.
Thnx in advance to all.
Neeraj Sidhaye
try_catch_finally @ Y !Hi Neeraj Sidhaye,
I am trying to deploy a sample xform application to the Oracle Application Server (10.1.3). However, I encountered the class loader issue that is similar to your stuation. I tried all the three solutions but the application is still use the Oracle xml paser class. I am wondering if you have any insight about this?
Thanks for your help.
Xingsheng Qian
iPass Inc.
Here is the error message I got.
Message:
java.lang.ClassCastException: oracle.xml.parser.v2.XMLElement
Stack Trace:
org.chiba.xml.xforms.exception.XFormsException: java.lang.ClassCastException: oracle.xml.parser.v2.XMLElement
at org.chiba.xml.xforms.Container.dispatch(Unknown Source)
at org.chiba.xml.xforms.Container.dispatch(Unknown Source)
at org.chiba.xml.xforms.Container.initModels(Unknown Source)
at org.chiba.xml.xforms.Container.init(Unknown Source)
at org.chiba.xml.xforms.ChibaBean.init(Unknown Source)
at org.chiba.adapter.servlet.ServletAdapter.init(ServletAdapter.java:153)
at org.chiba.adapter.servlet.ChibaServlet.doGet(ChibaServlet.java:303)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:719)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:376)
at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:870)
at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:451)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:299)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:187)
at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassCastException: oracle.xml.parser.v2.XMLElement
at org.chiba.xml.xforms.Instance.iterateModelItems(Unknown Source)
at org.chiba.xml.xforms.Bind.initializeModelItems(Unknown Source)
at org.chiba.xml.xforms.Bind.init(Unknown Source)
at org.chiba.xml.xforms.Initializer.initializeBindElements(Unknown Source)
at org.chiba.xml.xforms.Model.modelConstruct(Unknown Source)
at org.chiba.xml.xforms.Model.performDefault(Unknown Source)
at org.chiba.xml.xforms.XFormsDocument.performDefault(Unknown Source)
at org.chiba.xml.xforms.XFormsDocument.dispatchEvent(Unknown Source)
at org.apache.xerces.dom.NodeImpl.dispatchEvent(Unknown Source)
... 18 more -
How can I use the function keys in a GUI with swing?
I'm wondering how do you declare you want an action to happen when a user uses a function key or any key for that matter. How can you specify something frame wide or for that matter for a specific jtextbox?
you need to use an accelerator
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Can you use a roaming network and wireless extender at same time?
Greetings community - I've been struggling with an attempt to extend my wireless network for some time now. Please forgive my ignorance on the topic - I realize how 'simple' this is for many of you. Let me summarize:
What I have functioning:
1. Comcast telephony modem
2. 5th gen Airport Extreme as main wireless router connected to modem via Ethernet (corner of floor 3)
3. 2nd gen Airport Express as wireless extender (hooked to a stereo on floor 2)
What I want to accomplish:
1. I have poor wireless signal on my sun porch (corner of floor 1 opposite side of building as modem)
Extra equipment I have:
1. Another 5th gen Airport Extreme
2. Another 2nd gen Airport Express
What I have tried (and failed at):
1. Initially I set up the second Airport Extreme as a second wireless extender and placed it at a further point away than my first wireless extender. I quickly realized that set up does not function appropriately and one cannot connect to the further extender (I read about that on the apple forums).
2. I tried placing the second Airport Extreme in a different part of the house at equal distance from the main router as the first wireless extender. It's capability to extend was minimal if any.
3. I tried connecting the Airport Extreme to the main router via an Ethernet cable with the hopes of creating a roaming network (which I read about on the apple forums). I would have to come up with a way to run the Ethernet through the house but I'm willing to cross that bridge later. Once I got that set up, the 2nd gen Airport Express which was previously set up as a wireless extender is no longer recognized. Argh!!
Questions/Theories/Suggestions:
1. Is it possible to have a wired extender (via Ethernet) function at the same time as a separate wireless extender all connected to the same router? If so how do I do it?
2. I thought about keeping Airport Extreme #1 wireless connected to Airport Express #1 and call that Network 1. Then plug Airport Extreme #2 directly into the modem to create Network #2 and use Airport Express #2 as wireless extender. When I tried plugging both Airport Extremes into the modem, they both stopped functioning.
3. Do I get a second modem to put somewhere else in the house and use Airport Extreme #2 and Airport Express #2 in that fashion? My guess is Comcast will try to charge me a separate internet access fee to do that (boo!!).
I know there are a lot of brilliant folks out there. I'm sure someone can read this and see the 'obvious errors' in my ideas and attempts. I'm certainly open to new suggestions as well.
Thank you in advance for your time and advice.
- The New GuyIs is possible to rename the AEx 2 a different network name from the AEx1 and AE 1 (even though they are all connected to each other)? And say it is possible, would that potentially preventing the jumping?
No, in extend wireless the names must be the same..
However since you are creating a network on AE2 which is extended by AEx2 then you can indeed use a different name.. but it must be both,, AE2 and AEx2.
2. Even more crazy - if I did (could) give the AEx 2 a different network name, could I use my AE 2 as a wireless extension to that second network? Or is this just getting out of hand now?
You have lost me now.. there are ways and means.. but let me recommend a better solution.
Use EOP (homeplug in US) adapters if you cannot run ethernet. Multi-storey houses where you have heavy concrete construction are never going to work well with wireless alone. You are much better getting ethernet properly installed (which is the only 100% guaranteed method).. or buy a set of EOP adapters and give them a try.. they work in some cases and not others.. but better than wireless when they do work.
Otherwise I think you need higher power wireless routers.. but I can suggest you do the setup in a more controlled manner.
In other words do not use auto as per the airport utility.. use very short wireless names, different for both bands.. and fixed wireless channels.. then test which band works better.. Then you can do a link.. which will be slow but might give you better performance.
So..
Link1 Main AE1---- AEx1 This is wireless extend.
Link2 AEx1--ethernet--AE2. AE2 is in bridge mode and is also set to create a wireless network. (Use different wireless name here to prevent confusion).
Link3 AE2-----AEx2 Second wireless extend.
This overcomes the Apple limitation on multiple extends. It is not great setup but might get wireless to where you need it.. And better speed than you can get now.
NOTE>. I would personally never do this.. I will run ethernet forevermore.. having tried and tried in various places and using all kinds of equipment.. my conclusion is.. wireless is not suitable.. unless you can get enough signal in from one AP.. everything behind it must be ethernet.
It is much more expensive in some cases.. but ethernet works.. nothing else can be guaranteed to work. -
How can I use XStream to persist complicated Java Object to XML & backward
Dear Sir:
I met a problem as demo in my code below when i use XTream to persist my Java Object;
How can I use XStream to persist complicated Java Object to XML & backward??
See
[1] main code
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
public class PhoneList {
ArrayList<PhoneNumber> phones;
ArrayList<Person> person;
private PhoneList myphonelist ;
private LocationTest location;
private PhoneList(String name) {
phones = new ArrayList<PhoneNumber>();
person = new ArrayList<Person>();
public ArrayList<PhoneNumber> getphones() {
return phones;
public ArrayList<Person> getperson() {
return person;
public void addPhoneNumber(PhoneNumber b1) {
this.phones.add(b1);
public void removePhoneNumber(PhoneNumber b1) {
this.phones.remove(b1);
public void addPerson(Person p1) {
this.person.add(p1);
public void removePerson(Person p1) {
this.person.remove(p1);
public void BuildList(){
location = new LocationTest();
XStream xstream = new XStream();
myphonelist = new PhoneList("PhoneList");
Person joe = new Person("Joe, Wallace");
joe.setPhone(new PhoneNumber(123, "1234-456"));
joe.setFax(new PhoneNumber(123, "9999-999"));
Person geo= new Person("George Nixson");
geo.setPhone(new PhoneNumber(925, "228-9999"));
geo.getPhone().setLocationTest(location);
myphonelist.addPerson(joe);
myphonelist.addPerson(geo);
public PhoneList(){
XStream xstream = new XStream();
BuildList();
saveStringToFile("C:\\temp\\test\\PhoneList.xml",convertToXML(myphonelist));
public void saveStringToFile(String fileName, String saveString) {
BufferedWriter bw = null;
try {
bw = new BufferedWriter(
new FileWriter(fileName));
try {
bw.write(saveString);
finally {
bw.close();
catch (IOException ex) {
ex.printStackTrace();
//return saved;
public String getStringFromFile(String fileName) {
BufferedReader br = null;
StringBuilder sb = new StringBuilder();
try {
br = new BufferedReader(
new FileReader(fileName));
try {
String s;
while ((s = br.readLine()) != null) {
// add linefeed (\n) back since stripped by readline()
sb.append(s + "\n");
finally {
br.close();
catch (Exception ex) {
ex.printStackTrace();
return sb.toString();
public String convertToXML(PhoneList phonelist) {
XStream xstream = new XStream(new DomDriver());
xstream.setMode(xstream.ID_REFERENCES) ;
return xstream.toXML(phonelist);
public static void main(String[] args) {
new PhoneList();
}[2].
import java.io.Serializable;
import javax.swing.JFrame;
public class PhoneNumber implements Serializable{
private String phone;
private String fax;
private int code;
private String number;
private String address;
private String school;
private LocationTest location;
public PhoneNumber(int i, String str) {
setCode(i);
setNumber(str);
address = "4256, Washington DC, USA";
school = "Washington State University";
public Object getPerson() {
return null;
public void setPhone(String phone) {
this.phone = phone;
public String getPhone() {
return phone;
public void setFax(String fax) {
this.fax = fax;
public String getFax() {
return fax;
public void setCode(int code) {
this.code = code;
public int getCode() {
return code;
public void setNumber(String number) {
this.number = number;
public String getNumber() {
return number;
public void setLocationTest(LocationTest bd) {
this.location = bd;
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(location);
f.getContentPane().add(location.getControls(), "Last");
f.setSize(400,400);
f.setLocation(200,200);
f.setVisible(true);
public LocationTest getLocationTest() {
return location;
}[3].
package test.temp;
import java.io.Serializable;
public class Person implements Serializable{
private String fullname;
@SuppressWarnings("unused")
private PhoneNumber phone;
@SuppressWarnings("unused")
private PhoneNumber fax;
public Person(){
public Person(String fname){
fullname=fname;
public void setPhone(PhoneNumber phoneNumber) {
phone = phoneNumber;
public void setFax(PhoneNumber phoneNumber) {
fax = phoneNumber;
public PhoneNumber getPhone() {
return phone ;
public PhoneNumber getFax() {
return fax;
public String getName() {
return fullname ;
public void setName(String name) {
this.fullname = name;
public String toString() {
return getName();
}[4]. LocationTest.java
package test.temp;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
import javax.swing.event.*;
public class LocationTest extends JPanel implements ChangeListener
Ellipse2D.Double ball;
Line2D.Double line;
JSlider translate;
double lastTheta = 0;
public void stateChanged(ChangeEvent e)
JSlider slider = (JSlider)e.getSource();
String name = slider.getName();
int value = slider.getValue();
if(name.equals("rotation"))
tilt(Math.toRadians(value));
else if(name.equals("translate"))
moveBall(value);
repaint();
protected void paintComponent(Graphics g)
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
if(ball == null)
initGeom();
g2.setPaint(Color.green.darker());
g2.draw(line);
g2.setPaint(Color.red);
g2.fill(ball);
private void initGeom()
int w = getWidth();
int h = getHeight();
int DIA = 30;
int padFromEnd = 5;
line = new Line2D.Double(w/4, h*15/16, w*3/4, h*15/16);
double x = line.x2 - padFromEnd - DIA;
double y = line.y2 - DIA;
ball = new Ellipse2D.Double(x, y, DIA, DIA);
// update translate slider values
int max = (int)line.getP1().distance(line.getP2());
translate.setMaximum(max);
translate.setValue(max-padFromEnd);
private void tilt(double theta)
// rotate line from left end
Point2D pivot = line.getP1();
double lineLength = pivot.distance(line.getP2());
Point2D.Double p2 = new Point2D.Double();
p2.x = pivot.getX() + lineLength*Math.cos(theta);
p2.y = pivot.getY() + lineLength*Math.sin(theta);
line.setLine(pivot, p2);
// find angle from pivot to ball center relative to line
// ie, ball center -> pivot -> line end
double cx = ball.getCenterX();
double cy = ball.getCenterY();
double pivotToCenter = pivot.distance(cx, cy);
// angle of ball to horizon
double dy = cy - pivot.getY();
double dx = cx - pivot.getX();
// relative angle phi = ball_to_horizon - last line_to_horizon
double phi = Math.atan2(dy, dx) - lastTheta;
// rotate ball from pivot
double x = pivot.getX() + pivotToCenter*Math.cos(theta+phi);
double y = pivot.getY() + pivotToCenter*Math.sin(theta+phi);
ball.setFrameFromCenter(x, y, x+ball.width/2, y+ball.height/2);
lastTheta = theta; // save theta for next time
private void moveBall(int distance)
Point2D pivot = line.getP1();
// ball touches line at distance from pivot
double contactX = pivot.getX() + distance*Math.cos(lastTheta);
double contactY = pivot.getY() + distance*Math.sin(lastTheta);
// find new center location of ball
// angle lambda = lastTheta - 90 degrees (anti-clockwise)
double lambda = lastTheta - Math.PI/2;
double x = contactX + (ball.width/2)*Math.cos(lambda);
double y = contactY + (ball.height/2)*Math.sin(lambda);
ball.setFrameFromCenter(x, y, x+ball.width/2, y+ball.height/2);
JPanel getControls()
JSlider rotate = getSlider("rotation angle", "rotation", -90, 0, 0, 5, 15);
translate = getSlider("distance from end", "translate", 0, 100, 100,25, 50);
JPanel panel = new JPanel(new GridLayout(0,1));
panel.add(rotate);
panel.add(translate);
return panel;
private JSlider getSlider(String title, String name, int min, int max,
int value, int minorSpace, int majorSpace)
JSlider slider = new JSlider(JSlider.HORIZONTAL, min, max, value);
slider.setBorder(BorderFactory.createTitledBorder(title));
slider.setName(name);
slider.setPaintTicks(true);
slider.setMinorTickSpacing(minorSpace);
slider.setMajorTickSpacing(majorSpace);
slider.setPaintLabels(true);
slider.addChangeListener(this);
return slider;
}OK, My questions are:
[1]. what I generated XML by XSTream is very complicated, especially for object LocationTest, Can we make it as simple as others such as Person object??
[2]. after I run it, LocationTest will popup and a red ball in a panel will dsiplay, after I change red ball's position, I hope to persist it to xml, then when I read it back, I hope to get same picture, ie, red ball stiil in old position, How to do that??
Thanks a lot!!Positive feedback? Then please take this in a positive way: if you want to work on persisting Java objects into XML, then GUI programming is irrelevant to that goal. The 1,000 lines of code you posted there appeared to me to have a whole lot of GUI code in it. You should produce a smaller (much smaller) example of what you want to do. Calling the working code from your GUI program should come later.
-
Why can't use all the function when deployed Duke Bank successfully
i am use the DukesBankApp.ear in j2eetutorial14 to deployed .When i change the "public Object ejbCreate() throws CreateException" to "public String ejbCreate() throws CreateException",deployed Duke Bank successfully
But,I open the client,i can not use all the function. for example,when i creat new customer or account .Applecation message watch will say "remote exception"
why?or send the true DukesBankApp.ear to me .My mailbox is "[email protected]"
thinks!!!!! i want to receive your help imminence!think you very much!the sever log say:
[#|2005-05-10T22:39:18.609+0800|信息|sun-appserver-pe8.0|javax.enterprise.system.container.ejb|_ThreadID=13;|
javax.ejb.EJBException: createCustomer: Could not create Entity EJB; nested exception is: com.sun.jdo.api.persistence.support.JDOFatalUserException: JDO76604: JNDI lookup for cmp-resource 'jdbc/BankDB' failed.
NestedException: javax.naming.NameNotFoundException: BankDB not found
at com.sun.ebank.ejb.customer.CustomerControllerBean.createCustomer(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.sun.enterprise.security.SecurityUtil$2.run(SecurityUtil.java:146)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.enterprise.security.application.EJBSecurityManager.doAsPrivileged(EJBSecurityManager.java:930)
at com.sun.enterprise.security.SecurityUtil.invoke(SecurityUtil.java:151)
at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:128)
at $Proxy27.createCustomer(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:117)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:651)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:190)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1653)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1513)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:895)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:172)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:668)
at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.dispatch(SocketOrChannelConnectionImpl.java:375)
at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.read(SocketOrChannelConnectionImpl.java:284)
at com.sun.corba.ee.impl.transport.ReaderThreadImpl.doWork(ReaderThreadImpl.java:73)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:382)
|#] -
How can i Use SERVLET with RMI to avoid trust certificate
I know that for begining RMI, you must launch the server and the client.
for the server i use :
java -Djavax.net.ssl.trustStore=server.keystore -Djavax.net.ssl.keyStore=server.keystore -Djavax.net.ssl.keyStorePassword=server TestServer
for the client I use :
java -Djavax.net.ssl.trustStore=client.keystore -Djavax.net.ssl.keyStore=client.keystore -Djavax.net.ssl.keyStorePassword=client TestClient
and all work fine.
but i want to use a servlet for rmi client and i wrote this:
public class AppelServlet extends HttpServlet
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
try
System.out.println("Registering secure RMI socket factory ...");
java.rmi.server.RMISocketFactory.setSocketFactory(new SecureRMISocketFactory());
TestRemote test = (TestRemote) Naming.lookup("rmi://127.0.0.1:7123/TestClient");
String reponse=test.toLowerCase("HELLO WORLD");
System.out.println("la reponse est : "+reponse);
catch (Exception e)
System.out.println("test client exception: " +e);
PrintWriter out = response.getWriter();
response.setContentType("text/html");
and i have the following error on tomcat:
Registering secure RMI socket factory ...
test client exception: java.rmi.ConnectIOException: error during JRMP connection
establishment; nested exception is:
javax.net.ssl.SSLHandshakeException: Couldn't find trusted certificate
i think i must precise how to indicate the truststore like in the first case.
help me please.
hamdiHi,
Try doing the following steps.
Assuming you have a certificate obtained
Export the certificate into a .cer file.
On IE, goto tools->internet options->content->certificates, and export to a .cer file.
Using keytool of java import the certificate to the store that can be used doing the following command.
keytool -import -alias <ailas> -file < .cer filename> -keystore <storename here>
set the javax.net.ssl.trustStore and javax.net.ssl.trustStorePassword properties at the command prompt using the command below.
java -Djavax.net.ssl.trustStore=<storename> -Djavax.net.ssl.trustStorePassword=<password> <classname>
Let me know if this helped.
Also take a look at this link for using RMI with SSL
http://java.sun.com/products/jdk/1.2/docs/guide/rmi/SSLInfo.html
Regards,
Roopasri Vittal
Developer Technical Support
Sun Microsystems
http://sun.com/developers/support -
Hi, I can't use addRow in JTable
Hi, I can't use addRow in tableModel1.addRow. I am new in Java
here some code
public class Class1 extends JInternalFrame implements TableModelListener
public Class1(Connection srcCN, JFrame getParentFrame) throws SQLException
try
cnCus = srcCN;
stCus = cnCus.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
strSQL = "SELECT * FROM customer ORDER BY n_customer ASC";
rsCus = stCus.executeQuery(strSQL);
jbInit();
catch(Exception e)
e.printStackTrace();
private void jbInit() throws Exception
jScrollPane1.getViewport().add(jTable1, null);
DefaultTableModel tableModel1 = MyModel();
this.setClosable(true);
this.setTitle("REVISION");
this.setMaximizable(true);
this.setSize(new Dimension(800, 600));
this.setResizable(true);
this.setIconifiable(true);
this.addKeyListener(new java.awt.event.KeyAdapter()
public void keyPressed(KeyEvent e)
this_keyPressed(e);
private DefaultTableModel MyModel(){
DefaultTableModel m = new DefaultTableModel(){
public void setValueAt(Object value, int iRows, int iCols) {
try {
rsCus.absolute(iRows + 1);
rsCus.updateString(iCols + 1, value.toString());
rsCus.updateRow();
super.setValueAt(value, iRows, iCols);
} catch (SQLException e) {
public boolean isCellEditable(int iRows, int iCols) {
if (iCols == 0)
return false;
if (iCols == 1)
return false;
return true;
public void addRow(Vector data){}
m.setDataVector(Content, ColumnHeaderName);
return m;
private void this_keyPressed(KeyEvent e)
tableModel1.addRow(new Vector[]{"r5"});Here is an example of building a DefaultTableModel using the data in a ResultSet:
import java.awt.*;
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
public class TableFromDatabase extends JFrame
public TableFromDatabase()
Vector columnNames = new Vector();
Vector data = new Vector();
try
// Connect to the Database
String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
// String url = "jdbc:odbc:Teenergy"; // if using ODBC Data Source name
String url =
"jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=c:/data/database.mdb";
String userid = "";
String password = "";
Class.forName( driver );
Connection connection = DriverManager.getConnection( url, userid, password );
// Read data from a table
String sql = "Select * from Page";
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery( sql );
ResultSetMetaData md = rs.getMetaData();
int columns = md.getColumnCount();
// Get column names
for (int i = 1; i <= columns; i++)
columnNames.addElement( md.getColumnName(i) );
// Get row data
while (rs.next())
Vector row = new Vector(columns);
for (int i = 1; i <= columns; i++)
row.addElement( rs.getObject(i) );
data.addElement( row );
rs.close();
stmt.close();
catch(Exception e)
System.out.println( e );
// Create table with database data
JTable table = new JTable(data, columnNames);
JScrollPane scrollPane = new JScrollPane( table );
getContentPane().add( scrollPane );
JPanel buttonPanel = new JPanel();
getContentPane().add( buttonPanel, BorderLayout.SOUTH );
public static void main(String[] args)
TableFromDatabase frame = new TableFromDatabase();
frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
frame.pack();
frame.setVisible(true);
} -
Can I use Java Creator 2 with old JRE/JDK 1.4.2_07??
I am planning to install new Java Creator 2 but I am having JRE and JDK 1.4.2_07 and I am using mysql 3.23.55 and I want to integrate it.
Currently my OS is Windows XP SP2 platform with processor Intel Centrino 1.4 and RAM 256 MB... I know the ram is not sufficient and i am planning to upgrade it.. but the problem is can i still remain to use the old JRE and JDK 1.4.2_07 and i am also using mysql 3.23.55... all the driver and engine are out to date but can i still use it and integrate it with java creator 2?
The questions are:
1) Can I use Java creator 2 with those old engine?
2) What java compiler or development tools i can use to develop java standalone application?
Thank youWhen the jar file is expanded within Eclipse, it shows that the mail.jar file is built with 1.5.0; I think? Here is the header contents of the MANIFEST.MF file, note "Created by."
Manifest-Version: 1.0
Implementation-Version: 1.4
Specification-Title: JavaMail(TM) API Design Specification
Specification-Version: 1.3
Implementation-Title: javax.mail
Extension-Name: javax.mail
Created-By: 1.5.0 (Sun Microsystems Inc.)
Implementation-Vendor-Id: com.sun
Implementation-Vendor: Sun Microsystems, Inc.
Specification-Vendor: Sun Microsystems, Inc.
SCCS-ID: @(#)javamail.mf 1.6 05/12/09
This is causing problems, because anytime I try to use this file, I get signing errors. I have several Web Services built by BAE and Plumtree that are running on 1.4.2; and therefore I am stuck with 1.4.2. I did try to remove the SUN_MICR.* files, thinkning it would resolve the signing issues, but then that caused other problems. I can provide you with code that demonstrates the problem.
Is there a place where I can get a mail 1.4 jar file built with 1.4.2? that would most likely solve my problems. -
Hi all,
Thanks for everybody first if you look at my question and try to help me to find out the problem.
I need to write a applet which can let people to use
the jce's des function to encipher the user's password and
id from the homepage.
I write a applet already. It work fine as a application.
But it doesn't work when I run it as a applet. Does the problem come from the security problem because I need
to Load a sun_jce provider in a clien machine ?
Can I use JCE in applet ?
If it is ok to use jce in developing applet do I need to sign the applet before run it in web and which file I need to sign.
Btw, I use the archive tag in html file to make user get the whole jce jar file. does it Ok.
Followin is my source code
import javax.crypto.*;
import javax.crypto.spec.*;
import java.security.*;
import sun.misc.*;
import java.applet.*;
import java.awt.*;
public class DesApplet extends Applet{
public static void main(String[] arg) throws Exception{
DesApplet des = new DesApplet();
des.CallDes();
public void init(){
CallDes();
public void paint(Graphics g){
public CallDes(){
Cipher desCipher;
int i;
try{
Security.addProvider(new com.sun.crypto.provider.SunJCE());
KeyGenerator keygen = KeyGenerator.getInstance("DES");
SecretKey desKey = new SecretKeySpec("11111111".getBytes(),"DES");
System.out.println("Hello");
desCipher = Cipher.getInstance("DES/ECB/NoPadding");
desCipher.init(Cipher.ENCRYPT_MODE,desKey);
byte[] cleartext = "00000000".getBytes();
String value = convert_int_to_hex(cleartext,8);
System.out.println("cleartext is:"+value);
byte[] ciphertext = desCipher.doFinal(cleartext);
value = convert_int_to_hex(ciphertext,8);
System.out.println("ciphertext is:"+value);
desCipher.init(Cipher.DECRYPT_MODE,desKey);
byte[] cleartext1 = desCipher.doFinal(ciphertext);;
value = convert_int_to_hex(cleartext1,8);
System.out.println("cleartext1 is:"+value);
}catch(Exception e){System.err.println(e);}
public String convert_int_to_hex(byte[] value, int len) {
int i;
int j;
byte tmp;
byte[] temp = new byte[len*2];
char[] chars = new char[len*2];
String result = new String();
for (i=0; i<len; i++)
if (value[i] < 0)
temp[i*2] = (byte)((value[i] & 0xF0) >>> 4);
temp[i*2+1] = (byte)(value[i] & 0x0F);
else
temp[i*2] = (byte)(value[i] / 16);
temp[i*2+1] = (byte)(value[i] % 16);
for (i=0; i<len*2; i++)
if (temp[i] > 9)
chars[i] = (char)(temp[i] - 10 + 65);
else
chars[i] = (char)(temp[i] + 48);
result = result.concat(result.valueOf(chars));
return result;I have a server and a client.
Server has jdk1.4. client is an applet. I need to encrypt the username and password that are sent from client to the server.
I am able to encrypt and decrypt using JCE's DES on server side, since jdk1.4 has JCE provider installed by default. Since the applet may be running on any browser which may not have JCE supported. Is it possible for me to send the JCE jar file along with the applet and somehow enable the client applet to encrypt the user name and password and send to server.
Thanks a lot,
Gagan. -
Using images files without javax.swing
I am developing an applet the user can designate a background image instead of a color. This applet must not use the javax package. What class would you all recommend for creating the background image. I can't use IconImage because it is part of the javax package.
Thankscheckout the Graphics class too. It has a drawImage function that paints the image class on awt components. However you must override the the paint(Graphics g) method of the component in order to display your image.
-
Can I use Java Card Development Kit 2.2.1 on Windows XP?
Can I use Java Card Development Kit 2.2.1 on Windows XP?
If no, which kit supports XP?It is not as strait forward as per say.
I would like to share some tips that I have learnt duirng my recent experience with Java Card Development Kit 2.1.2 ( It presumed that JAVA SDK and JCDK is properly installed:
Additonal installation
- you need to download Java Communicatons API version 2.o for Windows at http://java.sun.com/products/javacomm/downloads/index.html
- unzip the downloaded file javacom20-win20.zip
- copy comm.jar and javax.com.properties to %JAVA_HOME%\lib
- copy win32com.dll to %JAVA_HOME%\bin
Configuration of Environment
- Activate System under Control Panel
- Click Environment Variable button under Advance Tab.
- Check that JAVA_HOME and JC21_HOME are there under User Variables for user123
- Create a new enviroment by clicking New button under User Variables and Enter "CLASSPATH" for Variable Name and ".;c:\j2sdk1.4.1_04\lib\comm.jar for Variable Value ( the ".;" is important for the entry and varies according to your JAVA_HOME)
Modifying %JC21_HOME%\samples\build_samples.bat
- Next you need to modify the compiler option in build_samples.bat
- Use editor to look for the portion "Compile Sample" and add "- target 1.1" to every statements here. A sample is listed below:
%JAVA_HOME%\bin\javac -target 1.1 %JCFLAGS% src\com\sun\javacard\samples\HelloWorld\*.java
You may proceed to test the demo codes as instrucrted in the User Guide.
I hope the above will help those who are keen to have a head start in Java Card Developemnet.
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