Where is the "Net" trail from Java tutorial?

Hello!
May be it's stupid question, but I just need to look at Net trail from java tutorial (java.net, urls, sokets etc...) . As I remember there was good tutorial about this, probably in "essential java classes", but now there is no it.
Does anybody know where is it or what's happend?
Thanks

Is this what you're looking for? http://java.sun.com/docs/books/tutorial/networking/index.html

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Problems with running quote server from Java Tutorial

Hello
The problem is this: I try to run QuoteServer from java tutorial (Trail: Deployment
Lesson: Applets, A Simple Network Client Applet) and server compiles but when I try to run it following message shows up:
QuoteServer listening on port: 32769
Exception in thread "QuoteServer" java.lang.NullPointerException
at java.net.DatagramPacket.setData(DatagramPacket.java:244)
at java.net.DatagramPacket.<init>(DatagramPacket.java:62)
at java.net.DatagramPacket.<init>(DatagramPacket.java:78)
at QuoteServerThread.run(QuoteServerThread.java:38)
And then server stops. What's going on?.
Cheers

Line 38 of QuoteServer.java is: packet = new DatagramPacket(buf, 256);
And that's where the problem is because in line 31 is written byte[] buf = null;
And what I get when I run QuoteServer.java with gcj version of java (gives more clues) is:
java QuoteServer
QuoteServer listening on port: 32785
Exception in thread "QuoteServer" java.lang.NullPointerException: Null buffer
at java.net.DatagramPacket.setData(byte[], int, int) (/usr/lib/libgcj.so.6.0.0)
at java.net.DatagramPacket.DatagramPacket(byte[], int, int) (/usr/lib/libgcj.so.6.0.0)
at java.net.DatagramPacket.DatagramPacket(byte[], int) (/usr/lib/libgcj.so.6.0.0)
at QuoteServerThread.run() (Unknown Source)
at .GC_start_routine (/usr/lib/libgcj.so.6.0.0)
at .__clone (/lib/libc-2.3.5.so)
So the problem is with this null buffer. What enter in line 31 instead of null?.
What values can byte[] reach except null?. I tried to find byte[] in java API but there is only Byte variable. I get the same output with java 5.0 compiler (but less clues).
Message was edited by:
macmacmac

Remote Object - not able to get the returned value from java method

     Hi ,
I am developing one sample flex aplication that connects to the java code and displays the returned value from the
java method in flex client. Here I am able to invoke the java method but not able to collect the returned value.
lastResult is giving null . I am able to see the sysout messages in server console.
I am using flex 3.2 and blazeds server and java 1.5
Here is the code what I have written.
<?xml version="1.0" encoding="utf-8"?><mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" backgroundColor="#FFFFFF" initialize="initApp()">
<mx:Script><![CDATA[
import mx.controls.Alert;
import mx.binding.utils.ChangeWatcher;
import mx.rpc.events.ResultEvent;
import mx.messaging.*;
import mx.messaging.channels.*
public function initApp():void {
     var cs:ChannelSet = new ChannelSet();
     var customChannel:Channel = new AMFChannel("my-amf", "http://localhost:8400/blazeds/messagebroker/amf");     cs.addChannel(customChannel);
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public function writeToConsole():void {      remoteObj.writeToConsole(
"hello from Flash client");
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//[Bindable]
// private var returnedVal:String;
]]>
</mx:Script>
<mx:RemoteObject id="remoteObj" destination="sro" />
<mx:Form width="437" height="281">
<mx:FormItem>
</mx:FormItem>
<mx:Button label="Write To Server Console" click="writeToConsole()"/>
</mx:Form>
</mx:WindowedApplication>
Java code
public
     public SimpleRemoteObject(){
          super();     }
class SimpleRemoteObject {
     public void writeToConsole(String msg) {          System.out.println("SimpleRemoteObject.write: " + msg);     }
     public String setName(){          System.
out.println("Name changed in Java");
          return "Name changed in Java";
And I have configured destination in remote-config.xml
<destination id="sro">
   <properties>
    <source>SimpleRemoteObject</source>
    <scope>application</scope>
   </properties>
</destination>
Please help me .

You are not able to get the returned value because if you see the Remote object help you will realise you have to use result="resultfn()" and fault = "faultfn()"
In this you define what you wish to do.
More importantly in the remote object you need to define which method you wish to call using the method class like this
<mx:RemoteObject id="remoteObj" destination="sro" result="r1" fault="f1" >
     <Method name="javaMethodName" result="r2" fault="f2"/>
<mx:RemoteObject>
r2 is the function where you get the result back from java and can use it to send the alert.

Sales order should not copy the net value from contract

Hi,
When we are creating the sales order,Where we can maintain that sales order should not copy the net value from contract.
Regards
Prabudh

Hi,
When I am creating the sales order with reference to contract,it's copying the net value and quantity from the contract.
But I want that sales order should not copy the net value and quantity from the contract and user can take new required quantity at the time creating the sales order.
Regards
Prabudh

How can i get the source code from java concurrent program in R12

Hi 2 all,
How can i get the source code from java concurrent program in R12? like , "AP Turnover Report" is java concurrent program, i need to get its source code to know its logic. how can i get its source code not the XML template?
Regards,
Zulqarnain

user570667 wrote:
Hi 2 all,
How can i get the source code from java concurrent program in R12? like , "AP Turnover Report" is java concurrent program, i need to get its source code to know its logic. how can i get its source code not the XML template?
Regards,
ZulqarnainDid you see old threads for similar topic/discussion? -- https://forums.oracle.com/forums/search.jspa?threadID=&q=Java+AND+Concurrent+AND+Source+AND+Code&objID=c3&dateRange=all&userID=&numResults=15&rankBy=10001
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How to edit the existing data in the XML file from java programming.

Hi all
i am able to create XML file with the sample data as below from java programming.
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for example
<?xml version="1.0"?>
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                     <key1>467</key1>
                    <name1>Paul</name1>
                    <id1>123</id1>
          </data1>
          <data2>
                     <key2>467</key2>
                    <name2>Paul</name2>
                    <id2>123</id2>
          </data2>
    </mydata>
i am able to insert the data in the XML.
now i need sample code on how to modify the data in the above XML file from the java programming for only key2,name2,id2 tags only. the remaining tags data in the XML file i want to keep same data except for key2,name2,id2 which are i want to modify from java code
Regards
Sunil
[points will be always rewardable]

hi
u need a parser or validate the xml file for to read the xml file from java coding u need for this
xml4j.jar u can download this file from here
http://www.alphaworks.ibm.com/tech/xml4j
or we can use the SAX(simple API for XML)
some sample applications for this
http://www.java-tips.org/java-se-tips/javax.xml.parsers/how-to-read-xml-file-in-java.html
http://www.developertutorials.com/tutorials/java/read-xml-file-in-java-050611/page1.html
http://www.xml-training-guide.com/e-xml44.html
let me know u need any other info
bvr

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How to start and stop the Communication channel from Java Mapping in XI 3.0
Scenario PI - > MQ -> Third Party web application
Web application is down and then Communication channels are stop manually .
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MQ Solution - Trigger will be set in MQ which will be called when web application is stopped
Trigger will send u201CSTOP u201C message to PI
How to configure PI scenario to stop different com channels when this message received ?

check this link: http://help.sap.com/saphelp_nw04/helpdata/EN/45/0c86aab4d14dece10000000a11466f/frameset.htm
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I Need to know that can we segregate the Sql Statements and convert them to Stored Procedures so as to isolate the Sql statements from Java Code.
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Suppose the developer has these four Statements
Select ename,empno,sal,job from emp;
select empno,ename,mgr from emp;
select deptno,dname from dept;
select emp.ename,emp.empno,emp.deptno,dept,dname fromemp,dept;
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Can Anybody guide me how to write this Stored type of Store procedure.
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http://www.google.com/search?q=java+windows+registry
Next time, search yourself. It might be beyond your belief, but you're really, really not the first person to wonder about this.

HT203210 Where is the show popup from network on System Preferences?

Where is the show popup from network on System Preferences?
Was checking Airport support for PPPoE disconnected message which directd me to Show Popup on network in System preferences and I had 1 option. Show all.
Would love additional info on why I keep getting this message - Could not find a PPPoE server. Which interrupts wifi service to Network.

PPPoE is a protocol used to authenticate a user prior to gaining Internet access used by certain ISPs. Typically it is used for DSL Internet service. PPPoE would be configured on the device that is directly connected to the DSL modem. This could be a router or computer.
Do you currently have or previously had DSL Internet service? What is the make & model of the device that you currently have the AirPort Extreme base station connected to by Ethernet? Which exact model of the Extreme do you have?

Accessing the Binding Layer from Java

Dear All
How can i Accessing the Binding Layer from Java code i need details document for it becuase i have complex binding object (object inside object)
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Mohd.Weshah

i know but my case is complicated :
Dear All
i have generate a human task based task flow and i create a page with payload object . i have an empiterator whcih include the following attributes :
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- name
- telephone
- department (Complex object) it include another attributes - dept and dept Name
my question i want to fill the empiterator by java code and fill all attributes including complex object (department ) from java code (my backing bean). \
you can download a document that describe my problems by images and details :
[http://www.4shared.com/account/document/fTREP1mv/ADF_Question__2_.html]
Regards
Wish79

Easiest way to launch a link to the default browser from java?

Is there an easy way to launch a link in the default browser from java? Ideally I would have a graphic in a cell that when clicked on would open a new window/tab in the default browser. This would be done in SWT, but it might be similar to swing, awt, etc. Any ideas?

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Adi.

Hi,
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The field is PROPOSE DELIVERY DATE .
If you check the field then the document created date will be the Requested date and will be carried from ORDER TO DELIVERY.
If you want the delivery date other thann the CURRENT date then you have to maintain the LEAD TIME in days in the same tab.
SHIP DATE: is the date on which you do the PGI in the delivery .
Please check them and revert back if u need further details
thanks,
santosh

Problems with running applet from Java Tutorial

Hello
I'd like to compile applet from Lesson Applets, trail: Deployment, title of lesson: A Simple Network Client Applet. But at the beginning of the source code is written that it will work only with: JavaSE 5 version.
* SwingWorker can be downloaded at:
* https://swingworker.dev.java.net/
* SwingWorker must be downloaded for JavaSE 5, but will be included
* in JavaSE 6.
Well, does anyone know about applet doing the same thing which would work in older versions of JDK?. Do I necessarily have to install JavaSE6?. I have J2EE 1.4SDK and I run into errors compiling this example.
Cheers
Message was edited by:
macmacmac

I've got another applet which was written for version 1.1 of Java. It compiles but when I run it, instead of letters of quote I get rectangles, positioned one next to the other. So I can't read the quote. What's wrong with this applet?. Here's the code of it:
* 1.1 version.
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import java.util.*;
public class QuoteClientApplet3 extends Applet
implements ActionListener {
boolean DEBUG = false;
InetAddress address;
TextField portField;
Label display;
DatagramSocket socket;
public void init() {
//Initialize networking stuff.
String host = getCodeBase().getHost();
try {
address = InetAddress.getByName(host);
} catch (UnknownHostException e) {
System.out.println("Couldn't get Internet address: Unknown host");
// What should we do?
try {
socket = new DatagramSocket();
} catch (IOException e) {
System.out.println("Couldn't create new DatagramSocket");
return;
//Set up the UI.
GridBagLayout gridBag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
setLayout(gridBag);
Label l1 = new Label("Quote of the Moment:", Label.CENTER);
c.anchor = GridBagConstraints.SOUTH;
c.gridwidth = GridBagConstraints.REMAINDER;
gridBag.setConstraints(l1, c);
add(l1);
display = new Label("(no quote received yet)", Label.CENTER);
c.anchor = GridBagConstraints.NORTH;
c.weightx = 1.0;
c.fill = GridBagConstraints.HORIZONTAL;
gridBag.setConstraints(display, c);
add(display);
Label l2 = new Label("Enter the port (on host " + host
+ ") to send the request to:",
Label.RIGHT);
c.anchor = GridBagConstraints.SOUTH;
c.gridwidth = 1;
c.weightx = 0.0;
c.weighty = 1.0;
c.fill = GridBagConstraints.NONE;
gridBag.setConstraints(l2, c);
add(l2);
portField = new TextField(6);
gridBag.setConstraints(portField, c);
add(portField);
Button button = new Button("Send");
gridBag.setConstraints(button, c);
add(button);
portField.addActionListener(this);
button.addActionListener(this);
public Insets getInsets() {
return new Insets(4,4,5,5);
public void paint(Graphics g) {
Dimension d = getSize();
Color bg = getBackground();
g.setColor(bg);
g.draw3DRect(0, 0, d.width - 1, d.height - 1, true);
g.draw3DRect(3, 3, d.width - 7, d.height - 7, false);
void doIt(int port) {
DatagramPacket packet;
byte[] sendBuf = new byte[256];
packet = new DatagramPacket(sendBuf, 256, address, port);
try { // send request
if (DEBUG) {
System.out.println("Applet about to send packet to address "
+ address + " at port " + port);
socket.send(packet);
if (DEBUG) {
System.out.println("Applet sent packet.");
} catch (IOException e) {
System.out.println("Applet socket.send failed:");
e.printStackTrace();
return;
packet = new DatagramPacket(sendBuf, 256);
try { // get response
if (DEBUG) {
System.out.println("Applet about to call socket.receive().");
socket.receive(packet);
if (DEBUG) {
System.out.println("Applet returned from socket.receive().");
} catch (IOException e) {
System.out.println("Applet socket.receive failed:");
e.printStackTrace();
return;
String received = new String(packet.getData());
if (DEBUG) {
System.out.println("Quote of the Moment: " + received);
display.setText(received);
public void actionPerformed(ActionEvent event) {
int port;
try {
port = Integer.parseInt(portField.getText());
doIt(port);
} catch (NumberFormatException e) {
//No integer entered. Should warn the user.
}

Problem in reading net content from java on unix environment

Friends,
I was trying to write sample java program which can able to connect to web and read the content.
But facing some proble. Kindly help me
package com.validate.email;
import java.net.*;
import java.io.*;
public class ReadWSDL {
public static void main(String args[]){
       String nextLine;
       URL url = null;
       URLConnection urlConn = null;
       InputStreamReader inStream = null;
       BufferedReader buff = null;
       try{
            System.setProperty("http.proxyHost","proxy.resources.company.com");
            System.setProperty("http.proxyPort", "80");
          // Create the URL obect that points
          // at the default file index.html
          url = new URL("http://ws.cdyne.com/emailverify/Emailvernotestemail.asmx?wsdl" );
          urlConn = url.openConnection();
         inStream = new InputStreamReader(
                           urlConn.getInputStream());
           buff= new BufferedReader(inStream);
       // Read and print the lines from index.html
        while (true){
            nextLine =buff.readLine();
            if (nextLine !=null){
                System.out.println(nextLine);
            else{
               break;
     } catch(MalformedURLException e){
       System.out.println("Please check the URL:" +
                                           e.toString() );
     } catch(IOException e1){
      System.out.println("Can't read from the Internet: "+
                                          e1.toString() );
Error
Can't read from the Internet: java.net.UnknownHostException: www.tpisoft.com

my_forum wrote:
The same code is working in Windows, where I get the proxy from Browser.How?
But on Unix machine it is not working. And I am using the proxy which is DNS/hostname of the unix machine.Don't you mean the DNS/hostname of the proxy?

How can we change the time of the media file from java code ?

Hi,
particularly, how can we start the media file from the second 55 and not from the second 0 (beginning) ?
Thanks.

I tryed to use such method but an exception was raised:
javax.media.NotRealizedError: Cannot set media time on a unrealized controller
     at com.sun.media.BasicPlayer.setMediaTime(BasicPlayer.java:427)
     at com.sabily.mualim.main.MediaFileDemo.loadMediaFile(MediaFileDemo.java:72)
     at com.sabily.mualim.main.MediaFileDemo.<init>(MediaFileDemo.java:77)
     at com.sabily.mualim.main.MualimStandalone.main(MualimStandalone.java:12)
Exception in thread "main" javax.media.NotRealizedError: Cannot set media time on a unrealized controller
     at com.sun.media.BasicPlayer.setMediaTime(BasicPlayer.java:427)
     at com.sabily.mualim.main.MediaFileDemo.loadMediaFile(MediaFileDemo.java:72)
     at com.sabily.mualim.main.MediaFileDemo.<init>(MediaFileDemo.java:77)
     at com.sabily.mualim.main.MualimStandalone.main(MualimStandalone.java:12)
below is the code related to playing media file:
package com.sabily.mualim.main;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.Panel;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import javax.media.ControllerAdapter;
import javax.media.ControllerListener;
import javax.media.Manager;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.media.RealizeCompleteEvent;
import javax.media.Time;
import javax.media.TimeBase;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class MediaFileDemo extends JFrame{
     private Player player;
     Component center;
     Component south;
     private void loadMediaFile() {
          final Container contentPane = getContentPane();
          if (player != null) {
               player.stop();
          try {
//               player = Manager.createPlayer(new URL("file:C:/Nouveau dossier/e1_intro.wav"));
               player = Manager.createPlayer(new URL("file:C:/mp3/001.wav"));
               //player = Manager.createPlayer(new URL("file:D:/Film/Earth_Planet/Planet.Earth.EP08.Jungles/Planet.Earth.EP08.Jungles.avi"));
          } catch (NoPlayerException e) {
               e.printStackTrace();
          } catch (MalformedURLException e) {
               e.printStackTrace();
          } catch (IOException e) {
               e.printStackTrace();
          ControllerListener listener = new ControllerAdapter() {
               public void realizeComplete(RealizeCompleteEvent event) {
                    Component vc = player.getVisualComponent();
                    if (vc != null) {
                         contentPane.add(vc, BorderLayout.CENTER);
                         center = vc;
                    } else {
                         if (center != null) {
                              contentPane.remove(center);
                              contentPane.validate();
                    Component cpc = player.getControlPanelComponent();
                    if (cpc != null) {
                         contentPane.add(cpc, BorderLayout.SOUTH);
                         south = cpc;
                    } else {
                         if (south != null) {
                              contentPane.remove(south);
                              contentPane.validate();
                    pack();
                    //setTitle("Lesson 1");
          player.addControllerListener(listener);
          player.setMediaTime(new Time(15));
          player.start();
     public MediaFileDemo() {
          loadMediaFile();
     public Player getPlayer() {
          return player;
     public void setPlayer(Player player) {
          this.player = player;
Best Regards

Where is the "Net" trail from Java tutorial?

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