I am thinking of creating a debug tool for my Java application. I am wondering if it is possible to get a stack trace, just like Exception.printStackTrace() but without actually throwing an exception? My goal is to in any given method, dump a stack to see who the method caller is. Any replies or thoughts concerning this would be reall...
I'm working on a project where I'm creating a class to run http client requests (my class acts as a client). It takes in a url and a request method (GET, POST, PUT, etc) and I want to be able to parse the URL and open a HttpsURLConnection or HttpURLConnection based on whether it is https or http (assume the given urls will always be cor...
What is the FieldBridge for timestamp in HIbernate Search? @Field public java.sql.Timestamp approvedDate; ...
I'm trying to fill an array in spiral order. So far, I can print the array in spiral order, but is there a way to modify the array so that i can fill it in spiral order and then just print the array? I'd like it to go in decreasing order like a countdown. Please help! public class Spiral { public static void main(int m, int n) { ...
Hi, I have an application that uses connection pooling to get database connection from oracle9i release 9.2.0.4 database.Application is hosted in SJSAS 8.1 and the driver is ojdbc14.jar version 10.1.0.4. The problem I am having is datasource.getConnection() method is taking about 40 secs to throw an exception when the DB is down! This i...
refering to http://www.weather.gov/directives/sym/pd01008006curr.pdf, page 8, we are given an area with four vertices in geographic coordinate system(lat and long system). I want to check if a point with particular lat and long exists within that area. ...
A third party library I'm utilizing provided the JavaDoc HTML and associated bin files in a zip file. How can I create a jar file from the JavaDoc HTML? Thanks. ...
Hello all, I am trying to run an ant build script that compiles GWT. This script includes a large number of libraries, each with a relatively long path. My GWT code only touches some of these libraries; however, it is convenient to include all of the libaries from the lib directory that I use for this and all of the other applications...
I am using an HTML form which sends <input type=hidden name=longdesc value='SMARTNET%^" 8X5XNBD'> this is done by the following javascript code: function masinsert(id) { var currentTime=new Date(); var button = document.getElementById("m"+id); button.onclick=""; button.value="Inserting"; var itemdescription = document.ge...
I've found a solution, see my own answer below. Does anyone have a more elegant one? Assume the following class to be tested: public class Foo { private final Logger logger = LoggerFactory.getLogger(Foo.class); public void bar() { String param=[..]; if(logger.isInfoEnabled()) logger.info("A message with paramete...
I am using connection pooling in my application. My question is: Is it explicitly required to close statement before closing connection in case of connection pooled environment? In connection pooled environment connection is not getting closed, (but returns back to free connection pool). I had checked jdbc 4.0 functional specs. In poin...
I need a list of classes that implement Serializable. Could you also tell me what kind of classes implement that interface? ...
Can I declare parameterized constructor inside servlet which is only constructor ? If no then why ? ...
I am trying to write a method which receives a serializable object (implements Serializable) o and a method m. The method should compare the state of o before invoking m and after invoking m, and tell if invoking m changed o. It should check if the bits representing o were changed after the methods. Ho can I do it? ...
Hi, I am implementing jsr 186 portlets, with some servlets to the mix to implement some ajax. The problem is if I only make AJAX calls for some time, I lose the session. Strangely, keeping alive the servlet session does not prevent the portlet session from timing out. Is there a way I can keep the session alive from within my servlets,...
I have a form that accepts a list of values, each value being listed on a separate line of textArea. In my Servlet, I am tokenizing the string I recieve from that textArea based on the new line characters "\r\n", like so: String[] partNumberList = originalPartNumberString.split("\r\n"); This appears to work fine. I get an array of val...
Hi! I'm trying to call a class (main method) from command line (Windows) with Java. The class imports other classes (other jars). I always get "class not found exception" from a class that my main program imports. Here's what I tried: Add a CLASSPATH env. var with the path where the referenced lib resides (not working) I tried with ...
Is it possible to specify a custom classloader for javac (or some alternative java compiler)? I'd love such a feat because it would allow me to compile classes that use classes that are only found by my special classloader. For the curious once: I'd write a classloder that connects to a database and creates classes based on the tables...
I have an executable jar that has one class file with a wrong value. I requested that file from the author and corrected the value. Now I want to compile it and add the compiled class file into the jar and run it. Not surprisingly I get multiple "cannot find symbol" errors for references of custom object that were in the jar file. ...
Hello, My managed bean : public List<String> getLiQuickNav(){ System.out.println("I'm here..."); List<String> l = new ArrayList<String>(); l.add("toto"); l.add("tata"); l.add("titi"); return l; } My forEach : <c:forEach var="categorie" items="#{mainControleur.liQuickNav}"> <h:outputLabel value="${categorie}"/> </c:for...