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  • Getting an error on a webservice call from C#

    - by ooo
    i am calling a java webservice from C#. i generate the wdsl proxy through visual studio which works fine and i see the methods. etc. I have one issue where i get this error in one of the requests: org.xml.sax.SAXException: No object was found for class type class com.ml.ets.ease.analytics.soap.Request does anyone have any idea why i might be getting this error.

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  • JNI cached jclass global reference variables being garbage collected?

    - by bubbadoughball
    I'm working in the JNI Invocation API, calling into Java from C. I have some upfront initialization to cache 30+ Java classes into global references. The results of FindClass are passed into NewGlobalRef to acquire a global reference to the class. I'm caching these class variables to reuse them later. I have 30+ global references to classes (and 30+ global methodIDs for the class constructors). In the following sample, I've removed exception handling as well as JNI invocation for the purpose of shortening the code snippet. My working code has exception checks after every JNI call and I'm running with -Xcheck:jni. Here's the snippet: jclass aClass; jclass bClass; jmethodID aCtor; jmethodID bCtor; void getGlobalRef(const char* clazz, jclass* globalClass) { jclass local = (*jenv)->FindClass(jenv,clazz); if (local) { *globalClass = (jclass) (*jenv)->NewGlobalRef(jenv,local); (*jenv)->DeleteLocalRef(jenv,local); } } methodID getMethodID(jclass clazz, const char* method, const char* sig) { return (*jenv)->GetMethodID(jenv,clazz,method,sig); } void initializeJNI() { getGlobalRef("MyProj/Testclass1", &aclass); getGlobalRef("MyProj/Testclass2", &bclass); . . aCtor = getMethodID(aclass,"<init>","()V"); bCtor = getMethodID(bclass,"<init>","(I)V"); } The initializeJNI() function sets the global references for jclasses and method IDs for constructors as well as some jfieldID's and some initialization of C data structures. After initialization, when I call into a JNI function using some of the cached jclasses and ctor jmethodIDs, I get a bad global or local reference calling reported from the -Xcheck:jni. In gdb, I break at the last line of initializeJNI(), and print all jclasses and jmethodIDs and the ones causing problems look to have been turned into garbage or garbage-collected (i.e. 0x00 or 0x06). Is it possible for global references to be gc'ed? Any suggestions?

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  • Send Mail through Jsp page.

    - by sourabhtaletiya
    hi friends ,i have tried alot to send mail via jsp page but i am not succeded. A error is coming javax.servlet.ServletException: 530 5.7.0 Must issue a STARTTLS command first. x1sm5029316wbx.19 <html> <head> <title>JSP JavaMail Example </title> </head> <body> <%@ page import="java.util.*" %> <%@ page import="javax.mail.*" %> <%@ page import="javax.mail.internet.*" %> <%@ page import="javax.activation.*" %> <% java.security.Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider()); Properties props = System.getProperties(); props.put("mail.smtp.starttls.enable","true"); props.put("mail.smtp.starttls.required","true"); String host = "smtp.gmail.com"; String to = request.getParameter("to"); String from = request.getParameter("from"); String subject = request.getParameter("subject"); String messageText = request.getParameter("body"); boolean sessionDebug = false; props.put("mail.smtp.host", "smtp.gmail.com"); props.put("mail.transport.protocol", "smtp"); props.put("mail.smtp.port", "25"); props.put("mail.smtp.auth", "true"); props.put("mail.debug", "true"); props.put("mail.smtp.socketFactory.port","25"); props.put("mail.smtp.starttls.enable","true"); Session mailSession = Session.getDefaultInstance(props, null); mailSession.setDebug(sessionDebug); Message msg = new MimeMessage(mailSession); props.put("mail.smtp.starttls.enable","true"); msg.setFrom(new InternetAddress(from)); InternetAddress[] address = {new InternetAddress(to)}; msg.setRecipients(Message.RecipientType.TO, address); msg.setSubject(subject); msg.setSentDate(new Date()); msg.setText(messageText); props.put("mail.smtp.starttls.enable","true"); Transport tr = mailSession.getTransport("smtp"); tr.connect(host, "sourabh.web7", "june251989"); msg.saveChanges(); // don't forget this props.put("mail.smtp.starttls.enable","true"); tr.sendMessage(msg, msg.getAllRecipients()); tr.close(); // Transport.send(msg); /* out.println("Mail was sent to " + to); out.println(" from " + from); out.println(" using host " + host + ".");*/ %> </table> </body> </html>

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  • Best practices regarding equals: to overload or not to overload?

    - by polygenelubricants
    Consider the following snippet: import java.util.*; public class EqualsOverload { public static void main(String[] args) { class Thing { final int x; Thing(int x) { this.x = x; } public int hashCode() { return x; } public boolean equals(Thing other) { return this.x == other.x; } } List<Thing> myThings = Arrays.asList(new Thing(42)); System.out.println(myThings.contains(new Thing(42))); // prints "false" } } Note that contains returns false!!! We seems to have lost our things!! The bug, of course, is the fact that we've accidentally overloaded, instead of overridden, Object.equals(Object). If we had written class Thing as follows instead, then contains returns true as expected. class Thing { final int x; Thing(int x) { this.x = x; } public int hashCode() { return x; } @Override public boolean equals(Object o) { return (o instanceof Thing) && (this.x == ((Thing) o).x); } } Effective Java 2nd Edition, Item 36: Consistently use the Override annotation, uses essentially the same argument to recommend that @Override should be used consistently. This advice is good, of course, for if we had tried to declare @Override equals(Thing other) in the first snippet, our friendly little compiler would immediately point out our silly little mistake, since it's an overload, not an override. What the book doesn't specifically cover, however, is whether overloading equals is a good idea to begin with. Essentially, there are 3 situations: Overload only, no override -- ALMOST CERTAINLY WRONG! This is essentially the first snippet above Override only (no overload) -- one way to fix This is essentially the second snippet above Overload and override combo -- another way to fix The 3rd situation is illustrated by the following snippet: class Thing { final int x; Thing(int x) { this.x = x; } public int hashCode() { return x; } public boolean equals(Thing other) { return this.x == other.x; } @Override public boolean equals(Object o) { return (o instanceof Thing) && (this.equals((Thing) o)); } } Here, even though we now have 2 equals method, there is still one equality logic, and it's located in the overload. The @Override simply delegates to the overload. So the questions are: What are the pros and cons of "override only" vs "overload & override combo"? Is there a justification for overloading equals, or is this almost certainly a bad practice?

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  • Recommend me a good JNI book

    - by Jose Figueroa
    Hello, I'm creating a software project in Java, is a remote administration tool. The thing is that I need to add some features with C++ and I read some about this process and I realized I need JNI, could you recommend me a good JNI Book or something related with ?

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  • Parsing plain text to some structured object

    - by Jeriho
    I am working on parsing plain text and converting it to key-value pairs. For example, plain text: some_uninteresting_thing key1 valueA, valueB, valueC key2 valueD key3 valueE valueF key4 valueG(valueH, valueI) key5 some_uninteresting_thing valueJ some_uninteresting_thing key6 some_uninteresting_thing (key6 shouldn't be mapped because has no appropriate values) As you can see plain text is lenient. What java library can handle this? If no such library exist, any suggestions on algorithm to do this.

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  • JVM Bug with JDWP

    - by Dan
    I found this bug report from Sun indicating a problem with certain Java versions and enabling a JDWP port. But that bug report doesn't indicate when or even if it was fixed. Does anyone have more up-to-date info on that? thanks

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  • How to create a custom Annotation and processing it using APT ?

    - by Dhana
    Hi, I'm new to Java Annotation. I know how to create custom annotation but I don't know how to process that Annotation to generate the dynamic code just like ejb 3.0 and hibernate does. I read some articles based on APT but no one gives the details about how to process the Annotation. Are there any tutorials with sample code for processing custom Annotations? Thanks

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  • Jython saying "No visible constructors for class"

    - by clutch
    I have a jython servlet as part of a large application running in tomcat5. I tested a few Spring Framework classes and create the objects in the Jython servlet. When I try to create objects of classes in the application I catch an Exception message "No visible constructors for class". These java classes do have a public constructor class, such as: public SchoolImpl() { } I create the object in python: from com.dc.sports.entity import SchoolImpl ... school = SchoolImpl() What am I doing wrong?

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  • User Session Management with Spring

    - by Chris
    I am developing a flex java - spring web app and have set up the business logic using hibernate. I want to maintain sessions so that when the user logs in , i can track the logged in user to display information that is related to the username. I want to do this using spring if possible and wondered if anyone could redirect me to a tutorial or even explain the method to which this is achieved , or if it is hard to achieve. Thanks Chris

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  • JVM version manager

    - by luacassus
    Is there Ruby Version Manager (http://rvm.beginrescueend.com) equivalent for the Java world? I'm looking for tool which allow me to easily download and install a new JVMs and switch between them. For example: jvm install <version> jvm list - will list installed JVMs on my system jvm use jdk1.6 - will switch my env to jdk 1.6 version, etc.

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  • How to get started with testing(jMock)

    - by London
    Hello, I'm trying to learn how to write tests. I'm also learning Java, I was told I should learn/use/practice jMock, I've found some articles online that help to certain extend like : http://www.theserverside.com/news/1365050/Using-JMock-in-Test-Driven-Development http://jeantessier.com/SoftwareEngineering/Mocking.html#jMock And most articles I found was about test driven development, write tests first then write code to make the test pass. I'm not looking for that at the moment, I'm trying to write tests for already existing code with jMock. The official documentation is vague to say the least and just too hard for me. Does anybody have better way to learn this. Good books/links/tutorials would help me a lot. thank you EDIT - more concrete question : http://jeantessier.com/SoftwareEngineering/Mocking.html#jMock - from this article Tried this to mock this simple class : import java.util.Map; public class Cache { private Map<Integer, String> underlyingStorage; public Cache(Map<Integer, String> underlyingStorage) { this.underlyingStorage = underlyingStorage; } public String get(int key) { return underlyingStorage.get(key); } public void add(int key, String value) { underlyingStorage.put(key, value); } public void remove(int key) { underlyingStorage.remove(key); } public int size() { return underlyingStorage.size(); } public void clear() { underlyingStorage.clear(); } } Here is how I tried to create a test/mock : public class CacheTest extends TestCase { private Mockery context; private Map mockMap; private Cache cache; @Override @Before public void setUp() { context = new Mockery() { { setImposteriser(ClassImposteriser.INSTANCE); } }; mockMap = context.mock(Map.class); cache = new Cache(mockMap); } public void testCache() { context.checking(new Expectations() {{ atLeast(1).of(mockMap).size(); will(returnValue(int.class)); }}); } } It passes the test and basically does nothing, what I wanted is to create a map and check its size, and you know work some variations try to get a grip on this. Understand better trough examples, what else could I test here or any other exercises would help me a lot. tnx

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  • JpaInspector cannot override inspectProperty()

    - by Gulcan
    Hi, I want to use JpaInspector class that is written for Metawidget. However when I insert this class into my Java project in Netbeans 6.8, It gives an error for inspectProperty() method of JpaInspector class, "method does not override or implement a method from supertype". Does it mean that parent class of JpaInspector, that is BaseObjectInspector, does not have such a method? Or what should I do to use JpaInspector in my project? Thanks.

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  • How to check if a given Regex is valid?

    - by Philipp Andre
    Hi folks, I have a little program allowing users to type-in some regular expressions. afterwards i like to check if this input is a valid regex or not. I'm wondering if there is a build-in method in Java, but could not find such jet. Can you give me some advice? Best regards Phil

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  • Format date in String Template email

    - by Gearóid
    I'm creating an email using String Template but when I print out a date, it prints out the full date (eg. Wed Apr 28 10:51:37 BST 2010). I'd like to print it out in the format dd/mm/yyyy but don't know how to format this in the .st file. I can't modify the date individually (using java's simpleDateFormatter) because I iterate over a collection of objects with dates. Is there a way to format the date in the .st email template?

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  • Difference between library and native library

    - by Alvin
    Could anyone tell me the difference between library and native library in terms of java? I found the word "native library" in the following line: Type 1 - drivers that implement the JDBC API as a mapping to another data access API, such as ODBC. Drivers of this type are generally dependent on a native library, which limits their portability. The JDBC-ODBC Bridge driver is an example of a Type 1 driver. which you can found here

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  • Display numbers from 1 to 100 without loops or conditions

    - by Harsha
    Is there a way to print numbers from 1 to 100 without using any loops or conditions like "if"? We can easily do using recursion but that again has an if condition. Is there a way to do without using "if" as well? Also no repetitive print statements,or a single print statement containing all the numbers from 1 to 100. A solution in Java is preferable.

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  • Grails/Roo for a .Net developer

    - by Kynth
    I am currently picking up Grails and Roo to expand my skills and to have a bit of fun. The vast majority of training materials appear aimed at new developers or Java developers. Does anyone know of any guides, resources or have any tips and anecdotes for translating existing development experience with .Net (C#/ASP.Net/Asp.Net MVC)?

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  • How to set Accept-Language header on request from applet

    - by Jo
    Hi, I'm not familiar with Java but I need to make a request to a remote webservice from within my applet. The webservice (.Net 1.1) uses HttpContext.Current.Request.UserLanguages[0] to determine the language to use. But the value of this member is alway null. So is there a way to pass the Accept-Language header along with something like "en-GB" set?

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  • Open source tool for hosting projects similar to "Google Project Hosting"

    - by Jeesmon
    We are looking for open source tool for hosting our internal projects like "Google Project Hosting". The tool should support individual wiki and version control for each project and it should be easy to configure for each project like in google code. We explored trac but seems it lack good support for multiple projects. The tool will be installed in our internal host and cannot use hosted service. A java based tool will be ideal.

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