Java 8: Pb with new java.time api
Hello,
I'm trying to use the new java.time api that comes with Java 8 (I already know joda-time).
I'm using the latest build B124.
I've a String "01/08/2012_00:00:01", I know that the time ref. is UTC, and I want to convert it to an 'Instant';
I tried:
DateTimeFormatter FORMAT_DT = DateTimeFormatter.ofPattern("dd/MM/yyyy_HH:mm:ss").withZone(ZoneOffset.UTC);
Instant instant = Instant.from(FORMAT_DT.parse("01/08/2012_00:00:01"));
But it fails with following error:
java.time.DateTimeException: Unable to obtain Instant from TemporalAccessor: {},ISO resolved to 2012-08-01T00:00:01 of type java.time.format.Parsed
at java.time.Instant.from(Unknown Source)
I don't understand what's wrong with my code, and I can't figure out how I should proceed to convert the String to an Instant ...
Any suggestion welcome,
Best regards,
Bernard.
Originally you stated this:
I don't understand what's wrong with my code,
So naturally we focused on how to "understand what's wrong' with your code.
You will never learn to troubleshoot problems if you just throw your hands up in the air and ask for help just because a complex series of steps doesn't complete successfully.
Break the process into its individual steps and check the results of each step to identify which step is FIRST producing an error.
When a complex or multi-step process has an error you start checking the individual steps of the process to see how far it gets successfully.
I would expect that converting a String to an Instant should be a basic/simple need, so it should be possible to do it in two lines of code; for the time being, the only way I found is to use a LocalDateTime intermediate variable, which seems quite verbose, and I'm wondering if someone knows a better way to do it, and would be willing to share it here.
Just a technical distinction: your latest example using a LocalDateTime intermediate variable CAN be done in one line of code by just using dot-notation to avoid creating an explicit intermediate variable. But that variable will still be created implicitly behind the scenes.
Converting a String to an Instant might be considered a basic/simple need but the set of functionality related to dealing with times, dates, calendars, etc is extremely complex. It makes much more sense to develop the requisite functionality in modules.
Especially when introducing new functionality such as the 'Instant' class are related package elements introduced in 1.8. That functionality builds on what came before and parsers already existing that know how to deal with all of the possible String variants and formatting options and so on.
Since that work CAN BE done on-the-fly using dot notation and anonymous implicit intermediate classes there isn't much need to reinvent that functionality in the new classes. If certain uses become standard new methods can always be added (e.g. to the Instant class) that will 'appear' to do things in one step.
And, being an early adopter release, you can always file a 'bug' or enhancement request from the 1.8 download page. That page has links for 'Report Bugs' and 'Feedback forum' that you can use.
In this current forum no one can give you an 'official' answer as to why something was implemented a particular way and/or whether that implementation is a 'bug' or was designed to work that way. Only Oracle can do that.
Similar Messages
-
Problems with New York Times App?
The app constantly shuts down or freezes requiring a shut down. Is their a fix or is this a known issue?
This is certainly an issue known to many users. What is unclear is whether the Publisher knows they have a problem. I read the times every day, but mnost days I have to force quite and restart a couple of times.
-
Complete working code for Gmail POP3 & SMTP with SSL - Java mail API
Finally, your code-hunt has come to an end!!!!
I am presenting you the complete solution (with code) to send and retrieve you mails to & from GMAIL using SMTP and POP3 with SSL & Authenticaion enabled. [Even starters & newbies like me, can easy try, test & understand - But first download & add JAR's of Java Mail API & Java Activation Framework to Netbeans Library Manager]
Download Java Mail API here
http://java.sun.com/products/javamail/
Read Java Mail FAQ's here
http://java.sun.com/products/javamail/FAQ.html
Download Java Activation Framework [JAF]
http://java.sun.com/products/javabeans/jaf/downloads/index.html
Also, The POP program retrieves the mail sent with SMTP program :) [MOST IMPORTANT & LARGELY IN DEMAND]okey.. first things first... all of your thanks goes to the following and not a s@!te to me :)
hail Java !!
hail Java mail API !!
hail Java forums !!
hail Java-tips.org !!
hail Netbeans !!
Thanks to all coders who helped me by getting the code to work in one piece.
special thanks to "bshannon" - The dude who runs this forum from 97!!I am just as happy as you will be when you execute the below code!! [my 13 hours of tweaking & code hunting has paid off!!]
Now here it is...I only present you the complete solution!!
START OF PROGRAM 1
SENDING A MAIL FROM GMAIL ACCOUNT USING SMTP [STARTTLS (SSL)] PROTOCOL OF JAVA MAIL APINote on Program 1:
1. In the code below replace USERNAME & PASSWORD with your respective GMAIL account username and its corresponding password!
2. Use the code to make your Gmail client [jsp/servlets whatever]
//Mail.java - smtp sending starttls (ssl) authentication enabled
//1.Open a new Java class in netbeans (default package of the project) and name it as "Mail.java"
//2.Copy paste the entire code below and save it.
//3.Right click on the file name in the left side panel and click "compile" then click "Run"
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
public class Main
String d_email = "[email protected]",
d_password = "PASSWORD",
d_host = "smtp.gmail.com",
d_port = "465",
m_to = "[email protected]",
m_subject = "Testing",
m_text = "Hey, this is the testing email.";
public Main()
Properties props = new Properties();
props.put("mail.smtp.user", d_email);
props.put("mail.smtp.host", d_host);
props.put("mail.smtp.port", d_port);
props.put("mail.smtp.starttls.enable","true");
props.put("mail.smtp.auth", "true");
//props.put("mail.smtp.debug", "true");
props.put("mail.smtp.socketFactory.port", d_port);
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.fallback", "false");
SecurityManager security = System.getSecurityManager();
try
Authenticator auth = new SMTPAuthenticator();
Session session = Session.getInstance(props, auth);
//session.setDebug(true);
MimeMessage msg = new MimeMessage(session);
msg.setText(m_text);
msg.setSubject(m_subject);
msg.setFrom(new InternetAddress(d_email));
msg.addRecipient(Message.RecipientType.TO, new InternetAddress(m_to));
Transport.send(msg);
catch (Exception mex)
mex.printStackTrace();
public static void main(String[] args)
Main blah = new Main();
private class SMTPAuthenticator extends javax.mail.Authenticator
public PasswordAuthentication getPasswordAuthentication()
return new PasswordAuthentication(d_email, d_password);
END OF PROGRAM 1-----
START OF PROGRAM 2
RETRIVE ALL THE MAILS FROM GMAIL INBOX USING Post Office Protocol POP3 [SSL] PROTOCOL OF JAVA MAIL APINote:
1.Log into your gmail account via webmail [http://mail.google.com/]
2.Click on "settings" and select "Mail Forwarding & POP3/IMAP"
3.Select "enable POP for all mail" and "save changes"
4.In the code below replace USERNAME & PASSWORD with your respective GMAIL account username and its corresponding password!
PROGRAM 2 - PART 1 - Main.java
//1.Open a new Java class file in the default package
//2.Copy paste the below code and rename it to Mail.java
//3.Compile and execute this code.
public class Main {
/** Creates a new instance of Main */
public Main() {
* @param args the command line arguments
public static void main(String[] args) {
try {
GmailUtilities gmail = new GmailUtilities();
gmail.setUserPass("[email protected]", "PASSWORD");
gmail.connect();
gmail.openFolder("INBOX");
int totalMessages = gmail.getMessageCount();
int newMessages = gmail.getNewMessageCount();
System.out.println("Total messages = " + totalMessages);
System.out.println("New messages = " + newMessages);
System.out.println("-------------------------------");
//Uncomment the below line to print the body of the message. Remember it will eat-up your bandwidth if you have 100's of messages. //gmail.printAllMessageEnvelopes();
gmail.printAllMessages();
} catch(Exception e) {
e.printStackTrace();
System.exit(-1);
END OF PART 1
PROGRAM 2 - PART 2 - GmailUtilities.java
//1.Open a new Java class in the project (default package)
//2.Copy paste the below code
//3.Compile - Don't execute this[Run]
import com.sun.mail.pop3.POP3SSLStore;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.FetchProfile;
import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.URLName;
import javax.mail.internet.ContentType;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.ParseException;
public class GmailUtilities {
private Session session = null;
private Store store = null;
private String username, password;
private Folder folder;
public GmailUtilities() {
public void setUserPass(String username, String password) {
this.username = username;
this.password = password;
public void connect() throws Exception {
String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
Properties pop3Props = new Properties();
pop3Props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);
pop3Props.setProperty("mail.pop3.socketFactory.fallback", "false");
pop3Props.setProperty("mail.pop3.port", "995");
pop3Props.setProperty("mail.pop3.socketFactory.port", "995");
URLName url = new URLName("pop3", "pop.gmail.com", 995, "",
username, password);
session = Session.getInstance(pop3Props, null);
store = new POP3SSLStore(session, url);
store.connect();
public void openFolder(String folderName) throws Exception {
// Open the Folder
folder = store.getDefaultFolder();
folder = folder.getFolder(folderName);
if (folder == null) {
throw new Exception("Invalid folder");
// try to open read/write and if that fails try read-only
try {
folder.open(Folder.READ_WRITE);
} catch (MessagingException ex) {
folder.open(Folder.READ_ONLY);
public void closeFolder() throws Exception {
folder.close(false);
public int getMessageCount() throws Exception {
return folder.getMessageCount();
public int getNewMessageCount() throws Exception {
return folder.getNewMessageCount();
public void disconnect() throws Exception {
store.close();
public void printMessage(int messageNo) throws Exception {
System.out.println("Getting message number: " + messageNo);
Message m = null;
try {
m = folder.getMessage(messageNo);
dumpPart(m);
} catch (IndexOutOfBoundsException iex) {
System.out.println("Message number out of range");
public void printAllMessageEnvelopes() throws Exception {
// Attributes & Flags for all messages ..
Message[] msgs = folder.getMessages();
// Use a suitable FetchProfile
FetchProfile fp = new FetchProfile();
fp.add(FetchProfile.Item.ENVELOPE);
folder.fetch(msgs, fp);
for (int i = 0; i < msgs.length; i++) {
System.out.println("--------------------------");
System.out.println("MESSAGE #" + (i + 1) + ":");
dumpEnvelope(msgs);
public void printAllMessages() throws Exception {
// Attributes & Flags for all messages ..
Message[] msgs = folder.getMessages();
// Use a suitable FetchProfile
FetchProfile fp = new FetchProfile();
fp.add(FetchProfile.Item.ENVELOPE);
folder.fetch(msgs, fp);
for (int i = 0; i < msgs.length; i++) {
System.out.println("--------------------------");
System.out.println("MESSAGE #" + (i + 1) + ":");
dumpPart(msgs[i]);
public static void dumpPart(Part p) throws Exception {
if (p instanceof Message)
dumpEnvelope((Message)p);
String ct = p.getContentType();
try {
pr("CONTENT-TYPE: " + (new ContentType(ct)).toString());
} catch (ParseException pex) {
pr("BAD CONTENT-TYPE: " + ct);
* Using isMimeType to determine the content type avoids
* fetching the actual content data until we need it.
if (p.isMimeType("text/plain")) {
pr("This is plain text");
pr("---------------------------");
System.out.println((String)p.getContent());
} else {
// just a separator
pr("---------------------------");
public static void dumpEnvelope(Message m) throws Exception {
pr(" ");
Address[] a;
// FROM
if ((a = m.getFrom()) != null) {
for (int j = 0; j < a.length; j++)
pr("FROM: " + a[j].toString());
// TO
if ((a = m.getRecipients(Message.RecipientType.TO)) != null) {
for (int j = 0; j < a.length; j++) {
pr("TO: " + a[j].toString());
// SUBJECT
pr("SUBJECT: " + m.getSubject());
// DATE
Date d = m.getSentDate();
pr("SendDate: " +
(d != null ? d.toString() : "UNKNOWN"));
static String indentStr = " ";
static int level = 0;
* Print a, possibly indented, string.
public static void pr(String s) {
System.out.print(indentStr.substring(0, level * 2));
System.out.println(s);
}END OF PART 2
END OF PROGRAM 2
P.S: CHECKING !!
STEP 1.
First compile and execute the PROGRAM 1 with your USERNAME & PASSWORD. This will send a mail to your own account.
STEP 2.
Now compile both PART 1 & PART 2 of PROGRAM 2. Then, execute PART 1 - Main.java. This will retrive the mail sent in step 1. njoy! :)
In future, I hope this is added to the demo programs of the Java Mail API download package.
This is for 3 main reasons...
1. To prevent a lot of silly questions being posted on this forum [like the ones I did :(].
2. To give the first time Java Mail user with a real time working example without code modification [code has to use command line args like the demo programs - for instant results].
3. Also, this is what google has to say..
"The Gmail Team is committed to making sure you always can access your mail. That's why we're offering POP access and auto-forwarding. Both features are free for all Gmail users and we have no plans to charge for them in the future."
http://mail.google.com/support/bin/answer.py?answer=13295
I guess bshannon & Java Mail team is hearing this....
Again, Hurray and thanks for helping me make it!! cheers & no more frowned faces!!
(: (: (: (: (: GO JCODERS GO!! :) :) :) :) :)
codeace
-----Thanks for the reply,
I did checked by enabling session debuging and also checked pop settings it's enabled for all
mails, I tried deleting some very old messages and now the message count is changed to 310.
This may be the problem with gmail.
Bellow is the output i got,
DEBUG: setDebug: JavaMail version 1.4ea
DEBUG: getProvider() returning javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc]
DEBUG POP3: connecting to host "pop.gmail.com", port 995, isSSL false
S: +OK Gpop ready for requests from 121.243.255.240 n22pf5432603pof.2
C: USER [email protected]
S: +OK send PASS
C: PASS my_password
S: +OK Welcome.
C: STAT
S: +OK 310 26900234
Custom output: messageCount : 310
C: QUIT
S: +OK Farewell. -
Problems with Java Scripting API
Hello Everyone!
Guys, I need help with Java scripting API. A problem is that I cannot understand how can I operate Java Object's fields and methods from the script language. I have chosen embedded javascript to work with. And I can get the fields and methods of in-box java classes (such as ArrayList for example), but I cannot work with methods and fields from my own classes!
Here is an example:
public class ScriptingExample {
class MyClass {
int myfield = 5;
int getInt() {return 7;}
public void runExample() {
ScriptEngineManager mgr = new ScriptEngineManager();
List<ScriptEngineFactory> factories = mgr.getEngineFactories();
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("JavaScript");
MyClass mc = new MyClass();
try{
engine.put("mc", mc);
engine.eval("print(mc.myfield); print(mc.getInt())"); // or engine.eval("print(mc.myfield)");
} catch (Exception e) {e.printStackTrace();}
} If I run the code with the commented part it prints "undefined" instead of "5".
If I run the code as it is it prints error instead of "7":
undefinedjavax.script.ScriptException: sun.org.mozilla.javascript.internal.EcmaError: TypeError: Cannot find function getInt. (<Unknown source>#1) in <Unknown source> at line number 1
at com.sun.script.javascript.RhinoScriptEngine.eval(Unknown Source)
at com.sun.script.javascript.RhinoScriptEngine.eval(Unknown Source)
at javax.script.AbstractScriptEngine.eval(Unknown Source)
at solutiondatabase.ScriptingExample.runExample(ScriptingExample.java:26)
at solutiondatabase.Main.main(Main.java:49)
How can I fix it?Guys,
please let me raise this topic because several new questions emerged.
(1) How can I get all the variables created inside my engine?
There are two kinds of variables: first kind is Java obejcts put inside the engine and second kind is the variables created in my script, such as 'var a = 4;'. How can I list all the variables of that two kinds?
(2) Is there is a way to make 'import static' to the engine? I dont want to write MyClass.MyEnum.MyEnumItem every time. Also, I cannot put the whole enum into the engine with engine.put("MyEnum", MyEnum); I can put only enum items separately: engine.put("MyEnum", MyEnum.EnumItemA);. Thats why I ask about static import.
(3) How can I cast engine variables back to java variables inside my java code?
Here is my example:
package mypackage;
import java.util.ArrayList;
import java.util.List;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineFactory;
import javax.script.ScriptEngineManager;
public class Main
public static void main(String[] args) throws Exception
ScriptEngineManager mgr = new ScriptEngineManager();
List<ScriptEngineFactory> factories = mgr.getEngineFactories();
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("JavaScript");
ArrayList<Double> myList = new ArrayList<Double>();
myList.add(5.0);
engine.put("MyList", myList);
engine.eval("MyVar = MyList.get(0);");
System.out.println((Double)engine.get("MyVar"));
}The result is:
Exception in thread "main" java.lang.ClassCastException: sun.org.mozilla.javascript.internal.NativeJavaObject cannot be cast to java.lang.Double
+ at mypackage.Main.main(Main.java:28)+
Is it possible to retrieve my Double java object from the engine?
Edited by: Dmitry_MSK on Aug 6, 2010 1:56 AM -
Performance issue with Business Objects Java JRC API in CRXI R2 version
A report is developed using java JRC API in CR XI release 2. When I generate the report in the designer, it took less than 5 seconds to display the results in crystal report viewer inside the designer. But in the QA environment, when I generate the same report from the application, it takes almost 1 to 1.5 minutes to display the same results in PDF. I also noticed that if the dataset contains bigger volume of data, then the reports are taking even longer almost 15 to 20 minutes.
While generating the report from the application, I noticed that most of time is taken during the execution of the com.crystaldecisions.report.web.viewer.ReportExportControl Object method as shown in following line of code
exportControl.processHttpRequest(request, response, context, null)
We thought the delay in exporting the report to PDF might be the layout of the report and data conversion to PDF for such a bigger volume of data.
Then we investigated the issue and experimented quickly to generate the same report with same result set data from the application using XML, XSL and converted the output XSL-FO to PDF using Apache FOP (Formatting Objects Processor) implementation. The time taken to export the report to PDF is less than 6 seconds. By doing this experiment, it is proved that the issue is not with conversion of data to PDF but it is the performance problem with Business Objects Java JRC API in CR XI R2.
In this regard, I searched for the above issue in the SAP community Network Forums -> Crystal Reports and Xcelsius -> Java Development -> Crystal Reports. But I did not find any answers or solutions for this kind of issue in the forums.
Any suggestion, hint in this matter is very much appreciated.Ted, The setReportAppServer problem is resolved. Now I could able to generate the report with hardcoded values in the SQLs in just 6 seconds where as the same report was generated in CRXI R2 in 1 minute 15 seconds as mentioned in the earlier message.
But, our exisiting application passes the parameter values to the SQLs embedded in the report. For some reason the parameters are not being passed to the report and the report displays only the labels without data.
As per the crj 12 samples codes, the code is written as shown below.
1. Created ReportClient Document
2. SetReportAppServer
3. Open the report
4. Getting DatabaseController and switching the database connection at runtime
5. Then setting the parameters as detailed below
ParameteFields parameterFieldController = reportClientDoc.getDataDefController().getParameterFieldController();
parameterFieldController.setCurrentValue("", "paramname",paramvalue);
parameterFieldController.setCurrentValue("", "paramname",paramavalue);
byteArrayInputStream = (ByteArrayInputStream)reportClientDoc.getPrintOutputController().export(ReportExportFormat.PDF);
6. Streaming the report to the browser
Why the parematers are not being passed to the report? Do I need to follow the order of setting these parameters? Did I miss any line of code for setting Params using crj 12?
Any help in this regard would be greatly appreciated. -
Hi
We have a requirement to create a custom e mail. For the same I am trying to use Java Mail API.I am facing an issue with the following code:
session session1 = session.getInstance(properties, null);
System gives an error Sourced file: inline evaluation of: ``Properties props = new Properties(); session session1 = session.getInstance(prop . . . '' : Typed variable declaration : Class: session not found in namespace
Is there some specific API i need to import for session class. Kindly suggest.
Regards
ShobhaHi Shobha,
I was also facing the same issue from last couple of weeks and just now i have achieved the working functionality.
Please find below working code and replace values as per your serveru2019s configuration.
import com.sap.odp.api.util.*;
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import java.io.File;
import java.net.*;
// SUBSTITUTE YOUR EMAIL ADDRESSES HERE!!!
String to =<email address>;
String from =<email address>;
// SUBSTITUTE YOUR ISP'S MAIL SERVER HERE!!!
String host = <smtp host name>;
String user = <smtp user name>;
// Create properties, get Session
// Properties props = new Properties();
Properties props = System.getProperties();
props.put("mail.transport.protocol", "smtp");
props.put("mail.smtp.host", host);
props.put("mail.debug", "false");
props.put("mail.smtp.auth", "false");
props.put("mail.user",user);
props.put("mail.from",from);
Session d_session = Session.getInstance(props,null);//Authenticator object need to be set
Message msg = new MimeMessage(d_session);
msg.setFrom(new InternetAddress(from));
InternetAddress[] address = {new InternetAddress(to)};
msg.setRecipients(Message.RecipientType.TO, address);
msg.setSubject("Test E-Mail through Java");
msg.setSentDate(new Date());
msg.setText("This is a test of sending a " +
"plain text e-mail through Java.\n" +
"Here is line 2.");
Transport.send(msg);
Deepak!!! -
How to start with Java TV API?
Hi,
I am new to Java TV API and i don't know how to start with it. Can any body suggest me what i would require(Software and hardware) to start coding in Java TV. Is MHP API are required for it if yes then how i can get those APIs??
Thanks in advance
Sajal Mahajan
[email protected]
Message was edited by:
Sajal.MahajanOCAP 1.0 and 1.1 specifications are avaible here:
http://opencable.com/specifications/ocap.html
tutorials:
http://interactivetvweb.org
Emulator:
http://xletview.sourceforge.net/ -
[svn] 3127: Updating asdoc to replace the avmplus call with new set of java files.
Revision: 3127
Author: [email protected]
Date: 2008-09-05 14:16:53 -0700 (Fri, 05 Sep 2008)
Log Message:
Updating asdoc to replace the avmplus call with new set of java files.
Removing all files related to asdochelper.
QA: Yes, also please test on non windows platform.
Doc:
Tests: checkintests, asdoc
Reviewed by: Pete Farland
Modified Paths:
flex/sdk/trunk/asdoc/templates/ASDoc_Config_Base.xml
flex/sdk/trunk/asdoc/templates/asdoc-util.xslt
flex/sdk/trunk/modules/compiler/build.xml
flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/asdoc/AsDocAPI.java
Added Paths:
flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/asdoc/AsClass.java
flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/asdoc/AsDocHelper.java
flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/asdoc/AsDocUtil.java
flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/asdoc/QualifiedNameInfo.java
flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/asdoc/SortComparator.java
flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/asdoc/TopLevelClassesGenerator.ja va
Removed Paths:
flex/sdk/trunk/asdoc/templates/asDocHelper
flex/sdk/trunk/asdoc/templates/asDocHelper.linux
flex/sdk/trunk/modules/compiler/asdoc/I had a generic record class that has a HashMap to hold the data fields (...)
method called createRecord() for each record type which would populate the HashMap with the correct data fieldsI'm not sure I understand: are the contents of this field map the same between two records of the same type? Then yes, you don't need to clone the map per record instance.
one thing that needs fixing is the fact that each time the createRecord() method is called I'm creating a new fieldMap to define the dataFields in the record class.Probably, but that will only get you a little bigger files; you won't gain an order of magnitude on the size of files. The problem for huge files is that as soon as their content is bigger than the available memory, you'll run into problems. A more radical approach if you need to address huge files is to process the records on the fly, and not load all records in memory. Of course not all algorithms or business logic can afford that...
I know I could rewrite the code and create a class for each record type and declare the fieldMap static but I was wondering if anyone had any better suggestions The Record instance could receive and keep a reference to its RecordType instance, and ask the RecordType instance the DataType for a field's name. That way the RecordType encapsulates the map, and there's less risk that a clumsy other class modifies the static map.
before I go rewriting a load of code.A load of code?!? Even with the idea of the static map, you only have to edit the enum type (well more accurately, each RecordType enumerated constant's createRecord() method). -
Failed to build Java Mail API 1.4.5 with maven-3.0.4
Hi,
I am trying to build Java Mail 1.4.5 with Maven-3.0.4 using default settings of maven.
It is getting failed to build due to following errors -
[ERROR] COMPILATION ERROR :
[INFO] -----------------------------------------------------------
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[210,37] cannot find symbol
symbol : variable Version
location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[369,47] cannot find symbol
symbol : variable Version
location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[913,29] cannot find symbol
symbol : variable Version
location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[916,29] cannot find symbol
symbol : variable Version
location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[919,29] cannot find symbol
symbol : variable Version
location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[922,29] cannot find symbol
symbol : variable Version
location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[925,29] cannot find symbol
symbol : variable Version
location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[928,29] cannot find symbol
symbol : variable Version
location: class javax.mail.Session
[INFO] 8 errors
[INFO] -----------------------------------------------------------
[INFO] ----------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ----------------------------------------------------------------------
[INFO] Total time: 1:51.197s
[INFO] Finished at: Tue Jan 08 13:06:01 IST 2013
[INFO] Final Memory: 12M/67M
[INFO] ----------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.
3.2:compile (default-compile) on project javax.mail: Compilation failure: Compil
ation failure:
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[210,37] cannot find symbol
[ERROR] symbol : variable Version
[ERROR] location: class javax.mail.Session
[ERROR]\Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[369,47] cannot find symbol
[ERROR] symbol : variable Version
[ERROR] location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[913,29] cannot find symbol
[ERROR] symbol : variable Version
[ERROR] location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[916,29] cannot find symbol
[ERROR] symbol : variable Version
[ERROR] location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[919,29] cannot find symbol
[ERROR] symbol : variable Version
[ERROR] location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[922,29] cannot find symbol
[ERROR] symbol : variable Version
[ERROR] location: class javax.mail.Session
[ERROR]\Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[925,29] cannot find symbol
[ERROR] symbol : variable Version
[ERROR] location: class javax.mail.Session
[ERROR] \Workarea\mySourceData\src\Mail\mail\src\main\java\javax\mail\Session.java:[928,29] cannot find symbol
[ERROR] symbol : variable Version
[ERROR] location: class javax.mail.Session
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal o
rg.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on
project javax.mail: Compilation failure
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:213)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProje
ct(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProje
ct(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBu
ild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(Lifecycl
eStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Laun
cher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.jav
a:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(La
uncher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:
352)
Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation fail
ure
at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompiler
Mojo.java:656)
at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:128)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(Default
BuildPluginManager.java:101)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:209)
... 19 more
[ERROR]
[ERROR]
[ERROR] For more information about the errors and possible solutions, please rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureExceptionSame issue I am facing when I am trying to build Java Mail with netbeans - 7.2.1, it getting failed with same version issue in Session.java class.
How can I set this Version in Session.java class to get rid of this error?
If we can use nexus repository then please let me know how to set this.
Thanks,
Neelam SharmaI answered this question here:
http://stackoverflow.com/questions/14217596/failed-to-build-java-mail-api-1-4-5-with-maven-3-0-4/14288418#14288418 -
Open JApplet with new java plugin ??
Hi,
I want to open an applet with new java run time envorinment, i.e. i must see 2 java consoles in the windows tray
here is my code in html, but the problem is they work in same jvm..
how do i make them work in different jvm
Hope i am clear, if not i will explain more in detail
<script language="JavaScript1.2">
function openPlanApplet()
TheNewWin = window.open('AppletTest.htm', '');
// where AppletTest.htm is the html which has applet defined in it
TheNewWin.moveTo(-10, -0);
AshishHI,
I think i will get 2 consoles, but the problem is the end user will be forced have 2 jvm installed on his machine, also what if i want 3 applets in 3 different envoriment , then
Let me send u some example of what i am trying to do
This is my java Applet, and there are 2 HTML files,
first open test.html and then click button to open the applet window, then click on the button "GO" in applet to change the text of label
, then go back to test.html and again click on the button to open applet u will see that the button text is "change it" instead of "Applet1"
and that is why i want to start a new jvm window to avoid this
Hope this makes sense,
or send me an email at [email protected] and i will send u a zip file of all html and class file for u to test
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.net.*;
public class AppletTest extends JApplet
implements ActionListener
public static String name = "Applet1";
JLabel label;
public void init()
JButton b = new JButton("go");
b.addActionListener(this);
label = new JLabel(name);
this.getContentPane().setLayout(new FlowLayout(FlowLayout.LEFT, 20,50));
this.getContentPane().add(b);
this.getContentPane().add(label);
this.setSize(100,100);
public void actionPerformed(ActionEvent ae)
name="Change it";
label.setText(name);
// end of code
/** test.html
<html><head>
<title>Test Screen size</title>
<script language="JavaScript1.2">
var TheNewWin;
function openPlanApplet()
TheNewWin = window.open('AppletTest.html', '', config='height=300, width=300, toolbar=no, menubar=no,scrollbars=no,resizable=no, location=no,directories=no, status=no ,offscreenBuffering=false');
TheNewWin.moveTo(-10, -0);
</SCRIPT>
</head>
<body bgcolor="#ffffff">
Open new window
<br>
<input type="button" value="Open Window" onclick="openPlanApplet()">
</body>
/** AppletTest.html
<html>
<head>
<title> test applet </title>
</head>
<body>
This is testing of applet
<br>
<applet code="AppletTest.class" WIDTH = "800" HEIGHT = "600">
</applet>
</body>
</html>
**/ -
[End of TNS data channel] with Java SDO API (JDBC thin 9.0.1.2.1)
Hello folks,
Environment:
Win2K, 1.2GHz Intel, 500MB RAM, Oracle 9i, Oracle JDBC Thin (9.0.1.2.1), JDK1.3
Our data in the DB is 2-D. It consists of SDO LineString geometries. We use SRID = 8307.
I run into this problem with Java SDO API. I got this exception: "Io exception: End of TNS data channel"
when I try to execute query that uses the SDO_RELATE function:
SELECT e.shape
FROM edge e
WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry( 2003, 8307, NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(-125.8,49.9,-125.6,49.9,-125.6,50.0,-125.8,50.0,-125.8,49.9) ),
'mask=ANYINTERACT querytype=WINDOW') = 'TRUE'
If I use SDO_FILTER instead of SDO_RELATE it works!
Here is how I execute the query in Java:
public int executeSpatialQuery(OracleConnection conn, String spatialQuery) throws Exception
int numberOfGeometries = 0;
conn.setDefaultRowPrefetch(1000);
Statement ps = conn.createStatement();
ResultSet rs = ps.executeQuery(spatialQuery);
while (rs.next()) {
numberOfGeometries++;
rs.close();
ps.close();
return numberOfGeometries;
Note: I was playing with the "conn.setDefaultRowPrefetch(n)" method hoping that there might be something to do with that but with no success.
Any help will be much appreciated. Thank you.
GKKHello folks,
Here is what I've done:
1. Created a "mini" Realtional model (modelB) which mimics exactly our existing "big" Realtional model (modelA). The tables, sequences, indices, etc. in modelB have been created in exactly the same fashion we'd created the corresponding entities in modelA. The only difference is that I preceeded the entities in our test modelB with "TEST_".
2. Populated the modelB with 1298 Lakes (3993 edges in total) in exatly the same fashion we use to populate our modelA - using a Data Loader based on Java SDO API.
3. Indexed the test modelB in exactly the same fashion as modelA.
4. Ran the query:
SELECT e.shape FROM test_edge e WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry(
2003,
8307,
NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(
-123.80833332065798,48.58352678668598,
-123.80833332065798,48.675352618459506,
-123.65050767229724,48.675352618459506,
-123.65050767229724,48.58352678668598,
-123.80833332065798,48.58352678668598
), 'mask=ANYINTERACT querytype=WINDOW'
) = 'TRUE'
in SQL*PLUS and it worked fine (retrieved a bunch of geometries)!
Ran the same query in the Daniel Geringer's OraTest utility and it worked this time and returned:
TIME : 1.222 seconds, TOTAL FETCH TIME 267 ROWS
Ran the query with our JCS Query Plug-In and it worked fine!
ANALYSIS
========
ModelA
======
- 59652 Lakes and 178764 edges
- it's properly indexed
- its SDO layers and geometries are valid
- when we count the number of related SDO geometries for this query we get:
SQL> SELECT count(e.shape) FROM edge e WHERE SDO_RELATE(e.shape,
2 mdsys.sdo_geometry(
3 2003,
4 8307,
5 NULL,
6 mdsys.sdo_elem_info_array(1,1003,1),
7 mdsys.sdo_ordinate_array(
8 -123.80833332065798,48.58352678668598,
9 -123.80833332065798,48.675352618459506,
10 -123.65050767229724,48.675352618459506,
11 -123.65050767229724,48.58352678668598,
12 -123.80833332065798,48.58352678668598
13 )
14 ), 'mask=ANYINTERACT querytype=WINDOW'
15 ) = 'TRUE';
COUNT(E.SHAPE)
267
- when we run the following query via the Java SDO API:
SELECT e.shape FROM edge e WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry(
2003,
8307,
NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(
-123.80833332065798,48.58352678668598,
-123.80833332065798,48.675352618459506,
-123.65050767229724,48.675352618459506,
-123.65050767229724,48.58352678668598,
-123.80833332065798,48.58352678668598
), 'mask=ANYINTERACT querytype=WINDOW'
) = 'TRUE'
it FAILS with: "TNS end of communaction channel"!
ModelB
======
- 1298 Lakes and 3993 edges
- it's properly indexed
- its SDO layers and geometries are valid
- when we count the number of related SDO geometries for this query we get:
SQL> SELECT count(e.shape) FROM test_edge e WHERE SDO_RELATE(e.shape,
2 mdsys.sdo_geometry(
3 2003,
4 8307,
5 NULL,
6 mdsys.sdo_elem_info_array(1,1003,1),
7 mdsys.sdo_ordinate_array(
8 -123.80833332065798,48.58352678668598,
9 -123.80833332065798,48.675352618459506,
10 -123.65050767229724,48.675352618459506,
11 -123.65050767229724,48.58352678668598,
12 -123.80833332065798,48.58352678668598
13 )
14 ), 'mask=ANYINTERACT querytype=WINDOW'
15 ) = 'TRUE';
COUNT(E.SHAPE)
267
- when we run the following query via the Java SDO API:
SELECT e.shape FROM test_edge e WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry(
2003,
8307,
NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(
-123.80833332065798,48.58352678668598,
-123.80833332065798,48.675352618459506,
-123.65050767229724,48.675352618459506,
-123.65050767229724,48.58352678668598,
-123.80833332065798,48.58352678668598
), 'mask=ANYINTERACT querytype=WINDOW'
) = 'TRUE'
it SUCCESSFULLY returns the related geometries!
So, what can we make of all this? We know that there exists a model for which the SDO_RELATE works via the Java SDO API. This model is a subset (w.r.t. the data set) of our original model in which we detected the "TNS end of communication channel problem". The environment we used for these tests is exactly the same: JDBC Thin driver (version 9.0.1.0.0), Oracle9i Enterprise Edition (Release 9.0.1.2.1 - Production).
One can think that the problem lies in the Oracle Object-Realational or Oracle Spatial but the fact that we can successfully execute the same SDO_RELATE queries in SQL*PLUS rejects this possibility. Perhaps it depends on the amount of data passed to the JDBC driver and the fashion in which it handles it! In our test above we had RELATED 267 geometries. We know that there exist SDO_RELATE queries that run successfully with modelA, but those are queries which ONLY retrieve an EMPTY set of RELATED geometries. In other words we don't get the "TNS end of communication channel" because NO data gets fetched from the server to the client! As soon as we find a SDO_RELATE query which retrieves (RELATES) at least 1 geometry that runs successfully in SQL*PLUS and run it via the Java SDO API - it FAILS! This means that no matter what volume of data is fetched from the server-JDBCThin-SDOAPI-client as long as there is ANY data, the query FAILS in modelA.
Perhaps something internally in the Oracle 9i Server happens that prevent the data being fetch to the JDBCThin for that particular modelA. But what that might be?
Very peculiar problem!
Regards,
Georgi -
Problem getting calendar event with recurring using EWS Java client API 1.2
I am using EWS 1.2 Java client API for getting calendar events. I am able to get Recurring information of the event which is created through API's
appointment.save(), but not able to get recurring information of the event created in OWA interface, I get following error during the bind:
===================================
Exception: Connection not established
microsoft.exchange.webservices.data.EWSHttpException: Connection not established
at microsoft.exchange.webservices.data.HttpClientWebRequest.throwIfConnIsNull(HttpClientWebRequest.java:394)
at microsoft.exchange.webservices.data.HttpClientWebRequest.getResponseHeaders(HttpClientWebRequest.java:280)
at microsoft.exchange.webservices.data.ExchangeServiceBase.processHttpResponseHeaders(ExchangeServiceBase.java:1045)
at microsoft.exchange.webservices.data.SimpleServiceRequestBase.internalExecute(SimpleServiceRequestBase.java:58)
at microsoft.exchange.webservices.data.MultiResponseServiceRequest.execute(MultiResponseServiceRequest.java:144)
at microsoft.exchange.webservices.data.ExchangeService.internalBindToItems(ExchangeService.java:1364)
at microsoft.exchange.webservices.data.ExchangeService.bindToItem(ExchangeService.java:1407)
at microsoft.exchange.webservices.data.ExchangeService.bindToItem(ExchangeService.java:1430)
at microsoft.exchange.webservices.data.Appointment.bind(Appointment.java:70)
at microsoft.exchange.webservices.data.Appointment.bindToRecurringMaster(Appointment.java:176)
at microsoft.exchange.webservices.data.Appointment.bindToRecurringMaster(Appointment.java:152)
============================
This happens if I use: Appointment.bindToRecurringMaster or Item.bind(service, id, appointmentProps) or findAppointments().
Works fine for events which doesn't have recurring. Only issue with events containing recurrence created through OWA. These are the propertySet:
new PropertySet(BasePropertySet.IdOnly,
ItemSchema.Subject,
AppointmentSchema.AppointmentType,
AppointmentSchema.DeletedOccurrences,
AppointmentSchema.FirstOccurrence,
AppointmentSchema.LastOccurrence,
AppointmentSchema.IsRecurring,
AppointmentSchema.Location,
AppointmentSchema.ModifiedOccurrences,
AppointmentSchema.OriginalStart,
AppointmentSchema.Recurrence,
AppointmentSchema.Start,
AppointmentSchema.End);
If I remove Recurrence it gives the response.
Thanks.I am using EWS 1.2 Java client API for getting calendar events. I am able to get Recurring information of the event which is created through API's
appointment.save(), but not able to get recurring information of the event created in OWA interface, I get following error during the bind:
===================================
Exception: Connection not established
microsoft.exchange.webservices.data.EWSHttpException: Connection not established
at microsoft.exchange.webservices.data.HttpClientWebRequest.throwIfConnIsNull(HttpClientWebRequest.java:394)
at microsoft.exchange.webservices.data.HttpClientWebRequest.getResponseHeaders(HttpClientWebRequest.java:280)
at microsoft.exchange.webservices.data.ExchangeServiceBase.processHttpResponseHeaders(ExchangeServiceBase.java:1045)
at microsoft.exchange.webservices.data.SimpleServiceRequestBase.internalExecute(SimpleServiceRequestBase.java:58)
at microsoft.exchange.webservices.data.MultiResponseServiceRequest.execute(MultiResponseServiceRequest.java:144)
at microsoft.exchange.webservices.data.ExchangeService.internalBindToItems(ExchangeService.java:1364)
at microsoft.exchange.webservices.data.ExchangeService.bindToItem(ExchangeService.java:1407)
at microsoft.exchange.webservices.data.ExchangeService.bindToItem(ExchangeService.java:1430)
at microsoft.exchange.webservices.data.Appointment.bind(Appointment.java:70)
at microsoft.exchange.webservices.data.Appointment.bindToRecurringMaster(Appointment.java:176)
at microsoft.exchange.webservices.data.Appointment.bindToRecurringMaster(Appointment.java:152)
============================
This happens if I use: Appointment.bindToRecurringMaster or Item.bind(service, id, appointmentProps) or findAppointments().
Works fine for events which doesn't have recurring. Only issue with events containing recurrence created through OWA. These are the propertySet:
new PropertySet(BasePropertySet.IdOnly,
ItemSchema.Subject,
AppointmentSchema.AppointmentType,
AppointmentSchema.DeletedOccurrences,
AppointmentSchema.FirstOccurrence,
AppointmentSchema.LastOccurrence,
AppointmentSchema.IsRecurring,
AppointmentSchema.Location,
AppointmentSchema.ModifiedOccurrences,
AppointmentSchema.OriginalStart,
AppointmentSchema.Recurrence,
AppointmentSchema.Start,
AppointmentSchema.End);
If I remove Recurrence it gives the response.
Thanks.
I am also facing the same problem.. If anyone can help, it would be helpful. I can see the response xml has the data, but while parsing the xml the error is generated in getResponseCode() in HttpClientWebRequest -
Hi there
It`s the first time I`m using (I have to use) the standard java logging API.
My need is to integrate it in an existing web-application based on struts.
So my first step was to include the following code into an Struts Action-class:
FileHandler file = new FileHandler("/pathToLogFile/myLogFile.log",true);
file.setFormatter(new SimpleFormatter());
logger.info("create info");
By intention is to have exactly one log-file for the whole application, but indeed I'm getting multiple log-files, even for each request of one and the same Action/Servlet class, like
myLogFile.log
myLogFile.log.1
myLogFile.log.2
myLogFile.log.3
Why does using append=true not work in the constructor of "FileHandler"
Do I have to close the FileHandler each time I've used it?
Is this a known issue?
Thanks for any responds!@ Stone.li
First, thanks for your answer.
perhaps my question was quite confusing .... but my need is just
to establish the logging API in an existing Web-Application and to have exactly one log-file for the whole application. This means I would have to provide in each servlet a FileHandler referencing to the log-file. I thought it would be part of the job of the logging API to synchronise this file access. -
Problem with java communication api for gsm modem port
Hi,every body
Am using gsm modem in my project previously my linux is 32bit with 32 bit jvm of sun that time there was no problem at the time of working with gsm modem port .But now am using 64bit linux then 32bit files are not supporting to communicate with gsm modem port .How can i get java communication api for unix 64bit ,64bit jvm of sun.please any body help me ...i am searching in sun/oracle also for downloading java communication files of 64bit jvm but i didn't get the link... i need bellow java communication api files.
ex:1)libLinuxSerialParallel.so
2)javax.comm.properties
3)comm.jar
4)commtest.jarModerator Action:
This duplicate cross-post is locked.
Stay with your original post.
https://forums.oracle.com/thread/2602063
(... and your hijack reply to a third thread has been removed.) -
Problem with Java Communication API
hi
I installed the Java Communication API on win32 platform (as per the guidelines)
Now when I try to run the sample program 'Blackbox' for the serial port, I get an error (in fact an exception is generated inside main function in BlackBox.class file)
I tried the SimpleRead.java example but that too generated the same exception
Can anybody help me out.... I am a novice with Java Comm APII tried running the sample BlackBox program provided for serial port and now it says
No Serial Ports Found!
I verified that both comm.jar and javax.comm.properties are in the <JDK>\lib directory.
Actually, I am using netBeans IDE 1.4 and I used the C:\J2SDK folder installed with netBeans for the Java Communicaion API
plz help.
Maybe you are looking for
-
Application Switcher Not Working correctly
Selecting a program opens desired program properly(as displayed in Menu Bar) but will not open the corresponding program's open windows until selecting program in a Mission Control desktop. After selecting the desktop to which the program is attached
-
Firefox goes Spinning Beachball all of the time under Mac OS X 10.7.5. I have to force quit it!
It does this all of time. I'm using Chrome right now & it doesn't! I have to stop using the browser that I have used for many years & now I'm using Chrome. Gosh, no issue like that!
-
Dynamic attribute in CRM Loyalty
Hi, I am creating a new dynamic attribute for Year to Date total amount spent by a customer when a member activity gets created. I created the dynamic attribute in SPRO under the Marketing->loyaltyPrograms->dynamic attribute. The attribute is added u
-
Whats the Problem in "not in" ??
See the Table Desc and values then the query what is the problem in final query SQL> desc date_test Name Null? Type SNO VARCHAR2(1) ADD_DT DATE DEL_DT DATE SQL> desc date_test1 Name Null? Type SNO VARCHAR2(1) ADD_DT DATE DEL_DT DATE SQL> SELECT TO_CH
-
Missing artwork in itunes 7.5 after ripping cd with dbpoweramp
ok so i've ripped a few cds using dbpoweramp (aac) and added the aac files to my itunes 7.5 library. the artwork doesn't show up so i select all the tracks of a particular cd and select 'get album artwork' and nothing happens! what do i need to do? o