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  • Why isnt this returning the new string?

    - by Evan Kimia
    I have a recursive method that reversed a string (HW assignment, has to be recursive). I did it....but its only returning the value of the string after the first pass. By analyzing the output after each pass i can see it does do its job correctly. heres my code, and the output i get below it: String s = "Hello, I love you wont you tell me your name?"; int k=0; public String reverseThisString(String s) { if(k!=s.length()) { String first =s.substring(0,k)+s.charAt(s.length()-1); String end = ""+s.substring(k, s.length()-1); k++; s=first+end; System.out.println(s); this.reverseThisString(s); } return s; } output: ?Hello, I love you wont you tell me your name

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  • Problem with FlowLayout

    - by atch
    public class MyFrame extends JFrame { public MyFrame(String title) { setSize(200, 200); setTitle(Integer.toString(super.getSize().width)); setLayout(new FlowLayout()); for (int i = 0; i < 5; ++i) { JButton b = new JButton(); b.setSize(90,50); b.setText(Integer.toString(b.getSize().width)); this.add(b);![alt text][1] } this.setVisible(true); } } why if having button widht 90 I'm getting window where three buttons are in one row instead of two?

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  • Http Requests POST vs GET

    - by behrk2
    Hi everyone, I am using a lot of HTTP Requests in an application that I am writing which uses OAuth. Currently, I am sending my GET and POST requests the same way: HttpConnection connection = (HttpConnection) Connector.open(url + connectionParameters); connection.setRequestMethod(method); connection.setRequestProperty("WWW-Authenticate", "OAuth realm=api.netflix.com"); int responseCode = connection.getResponseCode(); And this is working fine. I am successfully POSTing and GETing. However, I am worried that I am not doing POST the right way. Do I need to include in the above code the following if-statement? if (method.equals("POST") && postData != null) { connection.setRequestProperty("Content-type", "application/x-www-form-urlencoded"); connection.setRequestProperty("Content-Length", Integer .toString(postData.length)); OutputStream requestOutput = connection.openOutputStream(); requestOutput.write(postData); requestOutput.close(); } If so, why? What's the difference? I would appreciate any feedback. Thanks!

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  • Getting javadoc for Google Wave robot programming in Eclipse

    - by Espenhh
    Hey, Does anyone know how I can get the helpful Eclipse popups with javadoc when programming for the Google Wave Robots API? I have access to the JAR-file, the HTML Javadoc, as well as the source files from here How do I set up eclipse so I get javadoc integrated? I have tried adding the source files, but things just get "messy"

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  • maven dependencies and jetty - avoiding deploy

    - by James Cooper
    Hi, I have a project with 3 artifacts: common - entities, business logic. no UI code webapp-a - a public web app webapp-b - an admin web app webapp-a and webapp-b depend on common. common is configured to deploy to a local maven repo. so far so good. I have IntelliJ configured so that each artifact is a separate module. Module dependencies are configured properly. I can add a new method to a class in common and immediately use that method in a class in a webapp. However, when I run mvn jetty:run it uses the currently deployed common snapshot in my repository. It does not use my local classes. If I add a method to a class in common, it compiles fine, but blows up at runtime. So is it possible to either: a) Convince jetty:run to use my local common build output or b) Deploy my common output to my local ~/.m2/repo while I'm testing locally before I want to commit/deploy or c) some other solution? thank you! -- James

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  • Why can't the compiler/JVM just make autoboxing "just work"?

    - by Pyrolistical
    Autoboxing is rather scary. While I fully understand the difference between == and .equals I can't but help have the follow bug the hell out of me: final List<Integer> foo = Arrays.asList(1, 1000); final List<Integer> bar = Arrays.asList(1, 1000); System.out.println(foo.get(0) == bar.get(0)); System.out.println(foo.get(1) == bar.get(1)); That prints true false Why did they do it this way? It something to do with cached Integers, but if that is the case why don't they just cache all Integers used by the program? Or why doesn't the JVM always auto unbox to primitive? Printing false false or true true would have been way better. EDIT I disagree about breakage of old code. By having foo.get(0) == bar.get(0) return true you already broke the code. Can't this be solved at the compiler level by replacing Integer with int in byte code (as long as it is never assigned null)

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  • ORM model and DAO in my particular case

    - by EugeneP
    I have the DB structure as follows: table STUDENT (say, id, surname, etc) table STUDENT_PROPERTIES (say, name_of_the_property:char, value_of_the_property:char, student_id:FK) table COURSE (id, name, statusofcourse_id) table STATUSOFCOURSE (id, name_of_status:char ('active','inactive','suspended' etc)) table STUDENT_COURSE (student_id,course_id,statusofcourse_id) Let's try to pick up domain objects in my database: Student and Course are main entities. Student has a list of courses he attends, also he has a list of properties, that is all for this student. Next, Course entitity. It may contain a list of students that attend it. But in fact, the whole structure looks like this: the starting point is Student, with it's PK we can look a list of his properties, then we look into the STUDENT_COURSE and extract both FK of the Course entity and also the Status of the combination, it would look like "Student named bla bla, with all his properties, attends math and the status of it is "ACTIVE". now, quotation 1) Each DAO instance is responsible for one primary domain object or entity. If a domain object has an independent lifecycle, it should have its own DAO. 2) The DAO is responsible for creations, reads (by primary key), updates, and deletions -- that is, CRUD -- on the domain object. Now, first question is What are entities in my case? Student, Course, Student_Course, Status = all except for StudentProperties? Do I have to create a separate DAO for every object?

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  • How to determine if a file will be logically moved or physically moved.

    - by Frederic Morin
    The facts: When a file is moved, there's two possibilities: The source and destination file are on the same partition and only the file system index is updated The source and destination are on two different file system and the file need to be moved byte per byte. (aka copy on move) The question: How can I determine if a file will be either logically or physically moved ? I'm transferring large files (700+ megs) and would adopt a different behaviors for each situation. Edit: I've already coded a moving file dialog with a worker thread that perform the blocking io call to copy the file a meg at a time. It provide information to the user like rough estimate of the remaining time and transfer rate. The problem is: how do I know if the file can be moved logically before trying to move it physically ?

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  • Using a checkbox input on a form to send the form data to different email addresses

    - by Cody Thomas
    I am building a form for a client. Here is the rundown. The form will be used as a request to have a staff member contact the person filling out the form. However, there is a list of staff members that will contact them depending on what the subject matter is. So, I want to create a checkbox input section on the form with each staff person's email address attached to a corresponding checkbox. So, the person filling out the form can check only the staff people necessary for their needs. Finally, when the person clicks "submit", the form will be emailed to only the staff members who were checked in the form. I'm at a loss of how to set this up.

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  • Android Apps not working in emulator

    - by Mohit Deshpande
    None of my apps work in the emulator. I am running Ubuntu 9.10 and everytime I try to access my UI, the app crashes. All I get is an "Sorry! The application ... has stopped unexpectedly". For EVERY app this happens. package com.mohit.helloandroid; import android.app.TabActivity; import android.content.Intent; import android.content.res.Resources; import android.os.Bundle; import android.widget.TabHost; public class HelloAndroid extends TabActivity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Resources res = getResources(); //Resource object to get drawables TabHost tabHost = getTabHost(); //The activity tabhost TabHost.TabSpec spec; //Reusable tab spec Intent intent; intent = new Intent().setClass(this, HelloAndroid.class); spec = tabHost.newTabSpec("artists").setIndicator("Artists", res .getDrawable(R.drawable.tab_artists)) .setContent(intent); tabHost.addTab(spec); } } I don't know how this code could possibly throw a message like that.

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  • Using Solr and Zends Lucene port together...

    - by thebluefox
    Afternoon chaps, After my adventures with Zend-Lucene-Search, and discovering it isn't all its cracked up to be when indexing large datasets, I've turned to Solr (thanks to Bill Karwin for that :) ) I've got Solr indexing the db far far quicker now, taking just over 8 minutes to index a table of just over 1.7million rows - which I'm very pleased with. However, when I come to try and search the index with the Zend port, I run into the following error; Fatal error: Uncaught exception 'Zend_Search_Lucene_Exception' with message 'Unsupported segments file format' in /var/www/Zend/Search/Lucene.php:407 Stack trace: #0 /var/www/Zend/Search/Lucene.php(555): Zend_Search_Lucene-_readSegmentsFile() #1 /var/www/z_search.php(12): Zend_Search_Lucene-__construct('tmp/feeds_index') #2 {main} thrown in /var/www/Zend/Search/Lucene.php on line 407 I've tried to have a search around but can't seem to find anything about this problem, everyone just seems to be able to get them to work? Any help as always much appreciated :) Thanks, Tom

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  • Amazon EC2 and jbossws

    - by avjaz
    Hi - I've deployed a webservice to a Jboss instance running on Amazon EC2. The webservice works fine locally, but when I deploy on EC2, and go to the /jbossws/services page the Endpoint Address for the webservice is the private DNS of the ec2 instance (domU-X-X-X-X etc...), not the public dns (which I would like it to be). I've tried loading the wsdl by changing the private hostname to the public IP; that works, but when I try to call any of the operations I get a HostNotFoundException, I'm guessing due to the fact that the generated wsdl has the stanza: <service name='XXXService'> <port binding='tns:XXXBinding' name='XXXPort'> <soap:address location='http://domU-XX-XX-XX-XX-XX-XX.compute-1.internal:8080/xx/xx/xx'/> </port> </service> where http://domU-XX-XX-XX-XX-XX-XX.compute-1.internal is the internal dns of the ec2 instance. The wsdl is auto generated - Is there a JAXB annotation I can use so that I can force the generated wsdl to use the public dns of the EC2 instance? Many thanks -

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  • How to make an eclipse plugin for text comparison of two files

    - by Snehal
    I plan to make a text comparison plugin for eclipse which basically provides a visual aid for changes that are required in the file and allows the user to accept or reject them. It is very much in lines of subclipse for svn or any other code comparison tools. I already found a good source to perform the text comparison but I'm looking for some pointers regarding the implementation of the UI in eclipse.

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  • How to make concept representation with the help of bag of words

    - by agazerboy
    Hi All, Thanks for stoping to read my question :) this is very sweet place full of GREAT peoples ! I have a question about "creating sentences with words". NO NO it is not about english grammar :) Let me explain, If I have bag of words like "person apple apple person person a eat person will apple eat hungry apple hungry" and it can generate some kind of following sentence "hungry person eat apple" I don't in which field this topic will relate. Where should I try to find an answer. I tried to search google but I only found english grammar stuff :) Any body there who can tell me which algo can work in this problem? or any program Thanks P.S: It is not an assignment :) if it would be i would ask for source code ! I don't even know in which field I should look for :)

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  • Can't open Websphere Portal 7.0 Login Page after its integration with a custom user registry?

    - by jack_sparrow
    I am currently working on a project related to Websphere Portal 7.0 on Windows Server 2008 R2,64 bit. I am trying to integrate websphere portal with my custom user registry.I have completed all the steps required to implement custom user registry in portal as given in IBM documentation.I am adding my custom repository to the default federated repositories of Portal 7.0.I have made the required changes under VMM Federated CUR Properties section in wkplc.properties.I am using configengine.bat file to configure Portal with user registry. But even completing all the steps,when I am trying to open the Portal Login Page through http://ip-address:port_of_portal/wps/portal ,it is throwing an exception on the console: "Error 500: com.ibm.wps.resolver.data.exceptions.URIProcessingIOException: EJCBD0021E: The URI dav:fs-type1/themes/PageBuilder2/theme.html and parameters [['themeURI'=, 'mime-type'= could not be processed: [EJCBD0021E: The URI dav:fs-type1/themes/PageBuilder2/theme.html and parameters [['themeURI'=, 'mime-type'= could not be processed: EJPSG0002E: Requested Member does not exist.uid=portal,o=defaultWIMFileBasedRealm/null] " and in logs Systemout.log "EJPSB0005E: Exception occurred during creation of the principal with Name uid=portal,o=defaultWIMFileBasedRealm and Principal Type USER caused by com.ibm.portal.puma.MemberNotFoundException: EJPSG0002E: Requested Member does not exist.uid=portal,o=defaultWIMFileBasedRealm/null". Here,"portal" is administrative user in my custom user registry.I am able to access WAS using /ibm/console through user "portal".Please suggest some way to handle this issue.

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  • Abstract Base Class or Class?

    - by Mohit Deshpande
    For my semester project, my team and I are supposed to make a .jar file (library, not runnable) that contains a game development framework and demonstrate the concepts of OOP. Its supposed to be a FRAMEWORK and another team is supposed to use our framework and vice-versa. So I want to know how we should start. We thought of several approaches: 1. Start with a plain class public class Enemy { public Enemy(int x, int y, int health, int attack, ...) { ... } ... } public class UserDefinedClass extends Enemy { ... } 2. Start with an abstract class that user-defined enemies have to inherit abstract members public abstract class Enemy { public Enemy(int x, int y, int health, int attack, ...) { ... } public abstract void draw(); public abstract void destroy(); ... } public class UserDefinedClass extends Enemy { ... public void draw() { ... } public void destroy() { ... } } 3. Create a super ABC (Abstract Base Class) that ALL inherit from public abstract class VectorEntity { ... } public abstract class Enemy extends VectorEntity { ... } public class Player extends VectorEntity { ... } public class UserDefinedClass extends Enemy { ... } Which should I use? Or is there a better way?

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  • Android Color Picker

    - by GuyNoir
    Does anyone know of a quick color picker widget that I could grab to use in my application? I've seen one in a few different applications that has a wheel with colors, and that you tap in the center to select, but I'm not sure where to find it. Google brings up nothing. Any color picker would be fine though. Thanks.

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  • httpClient proxy support in apache commons 3.1

    - by user1173339
    I am using apache commons 3.1 to implement httpClient with proxy support. I am trying to connect to a remote host through proxy. The proxy server is configured without any authentication, however the the remote host is configured with authentication. When I am passing the proxy parameters through properties file, it gives warning while execution: WARN - Required proxy credentials not available for BASIC @xx.xx.xx.xx WARN - Preemptive authentication requested but no default proxy credentials availble But the execution goes ahead. On the other hand when I am passing the proxy parameters through the JVM arguments then the again the same warning is given and the execution is stopped. Is there any specific reason for this behavior? Is there any difference in passing the proxy parameters through properties file and through JVM arg? Here is the code: if(System.getProperty("http.proxyHost") != null && System.getProperty("http.proxyPort") != null) { httpClient.getHostConfiguration().setProxy(System.getProperty("http.proxyHost"), Integer.parseInt(System.getProperty("http.proxyPort"))); } else if(AMXAdminTask.props.getProperty("http.proxyHost") != null && AMXAdminTask.props.getProperty("http.proxyPort") != null) { httpClient.getHostConfiguration().setProxy(Propfile.props.getProperty("http.proxyHost"), Integer.parseInt(Propfile.props.getProperty("http.proxyPort"))); }

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  • Spring @PostConstruct function in a @Repository called multiple times

    - by Seth
    I have a DAO that I'm trying to inject into a couple different places: @Repository public class FooDAO { @Autowired private HibernateManager sessionFactory; @PostConstruct public void doSomeDatabaseStuff() throws DataAccessException { ... } } And my application-context.xml is a fairly simple context:component-scan: <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd" default-init-method="init" default-destroy-method="destroy"> <context:component-scan base-package="top.level"/> </beans> The DAO is accessed from a couple servlets in my application server through @Autowired properties. As far as I understand, anything annotated with @Repository should default to being a singleton and thus doSomeDatabaseStuff() should only be called once (as is my intention). The problem is that I'm seeing doSomeDatabaseStuff() called multiple times. What's going on here? Have I set something up incorrectly? I'm using spring 3.0.0. Thanks for the help.

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  • Troubles Iterating Over A HashMap with JSF, MyFaces & Facelets

    - by Lee Theobald
    Hi all, I'm having some trouble looping over a HashMap to print out it's values to the screen. Could someone double check my code to see what I'm doing wrong. I can't seem to find anything wrong but there must be something. In a servlet, I am adding the following to the request: Map<String, String> facetValues = new HashMap<String, String>(); // Filling the map req.setAttribute(facetField.getName(), facetValues); In one case "facetField.getName()" evaluates to "discipline". So in my page I have the following: <ui:repeat value="${requestScope.discipline}" var="item"> <li>Item: <c:out value="${item}"/>, Key: <c:out value="${item.key}"/>, Value: <c:out value="${item.item}"/></li> </ui:repeat> The loop is ran once but all the outputs are blank?!? I would have at least expected something in item if it's gone over the loop once. Checking the debug popup for Facelets, discipline is there and on the loop. Printing it to the screen results in something that looks like a map to me (I've shortened the output) : {300=0, 1600=0, 200=0, ... , 2200=0} I've also tried with a c:forEach but I'm getting the same results. So does anyone have any ideas where I'm going wrong? Thanks for any input, Lee

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  • Working with Jasper Reporsts

    - by Chandu
    Hi all, can I integrate the jasper report viewer to my swing application as like if I click on view report button from my application then viewer should be opened. If so could you advice me with code snippet for this integration and in this viewer the save as type should be restricted for PDF only rather than every other download option filter available . Please advice me in this regard. Regards, Chandu

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  • Handling hundreds of actions in Struts2

    - by Roberto
    Hi all, I've inherited a struts 1 web application where, in order to reduce the number of Action classes (I guess this is the reason), lots of actions are mapped inside a single Action class, like: public XXXAction() throws Exception{ actions = new Hashtable(); actions.put("/XXX/main/load", new Integer(0)); actions.put("/XXX/main/save", new Integer(1)); ...... } public ActionForward executeAction(ActionMapping mapping, ActionForm form, HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException { try { switch (((Integer) actions.get(action)).intValue()) { case 0: loadXXXMain(); break; case 1: ....... and so on (in some Action classes I have almost one hundred of these small actions). Now I'm looking at migrate to struts2 and I would like to have a cleaner and better solution to handle this, maybe without having a single Action class for each of these small classes. What do you suggest? I don't like this solution, but I don't like having hundreds of Action classes.... Thanks! Roberto

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