Search Results

Search found 46894 results on 1876 pages for 'java native interface'.

Page 993/1876 | < Previous Page | 989 990 991 992 993 994 995 996 997 998 999 1000  | Next Page >

• Swing and handling threads

  - by James P.

  There's a couple questions here on StackOverflow on the subject of threading with the Swing api but things still aren't clear. What is the issue with the EDT, what is the proper way to initiate a Thread with Swing and in what cases should it be used? P.S: Any sources in terms of good practises would be appreciated.

  Read the article

• What Should i Learn C++ or Web development?

  - by Rohit Sthapit

  See i have just completed my Secondary level exams and have long holiday which i want to utilized in something. What should i learn? i want to go in computer field in future. so which is best now in my level to learn. Please suggest me i am 16 year old boy.

  Read the article

• Why do I get an Enum constant reference cannot be qualified in a case label?

  - by maleki

  Why does the following code fail to compile while changing the case statement to case ENUM1: doSomeStuff(); works? public enum EnumType { ENUM1, ENUM2, ENUM3; void doSomeStuff() { switch(this) { case EnumType.ENUM1: doSomeStuff(); } } }

  Read the article

• getting node value exception

  - by Aswan

  Hi Folks <amount currency="USD">1000500</amount> while parsing above string i am getting only attribute value .when i try to get node value null pointer exception for getting node value using NodeList amountList= estimateElement.getElementsByTagName("amount"); Element amtElement= (Element)amountList.item(0); String amount=amtElement.getFirstChild().getnodevalue() Thanks in advance Aswan

  Read the article

• Why we don't have to add try-catch to a RuntimeException ?

  - by M.H

  Hi,I want to ask why we don't have to add try-catch block to a RuntimeException while we should do that with other exceptions ?I mean like : public class Main { public static void main(String[] args) { throw new RuntimeException(); } }

  Read the article

• Is it possible to establish default values for inherited fields in subclasses?

  - by Christian Mann

  I'm trying to establish a default value for inherited fields from superclasses. So, my class hierarchy is thus: Character - Enemy - Boss                 \                   - Hero Each Character has a public static char avatar to represent him on an ASCII playing field. How do I set a default value for the avatar of each class inherited from Character? Thank you!

  Read the article

• Getting the type of a parametrized class parameter?

  - by GuidoMB

  I have the following class public class MyClass<T> { public Class<T> getDomainClass() { GET THE CLASS OF T } } I've googled this problem and all the answers I could find told me to use getGenericSuperClass(), but the problem of this method is that I must have a second class that extends MyClass and I don't want to do this. What I need is to get the parametrized type of a concrete class?

  Read the article

• Swing invokeLater never shows up, invokeAndWait throws error. What can I do?

  - by Geo

  I have this code: try { SwingUtilities.invokeAndWait(new Runnable() { public void run() { try { dialog.handleDownload(); } catch (IOException io) { io.printStackTrace(); } } }); } catch(Exception io) { io.printStackTrace(); } in the handleDownload I'm reading an inputstream, calculating a progress bar's value, and setting it to that. So, when I click a button, a new JFrame opens up and does all the stuff I wrote above. If I have the dialog.handleDownload by itself ( in no SwingUtilities method ), it freezes until the operation is finished. If I add it in a invokeLater it's closed very fast ( I can't see anything, and the operation is not finished ). If I add it in a invokeAndWait I get the invokeAndWait cannot be called from the event dispatcher thread error. What should I do?

  Read the article

• How to detect that code is running inside eclipse IDE

  - by DD

  How to detect that code is running inside eclipse IDE

  Read the article

• How do I store and switch over preferences?

  - by kunjaan

  I want to store some user preferences Would Enum be a good datastructure to store them? If so, how do I do it? This is the final usage of the datastructure. main(){ int my_val = PREFERENCES.BLACK; switch(PREFERENCES){ case BLACK: ... }

  Read the article

• Why does this compile?

  - by akf

  I was taken aback earlier today when debugging some code to find that something like the following does not throw a compile-time exception: public Test () { HashMap map = (HashMap) getList(); } private List getList(){ return new ArrayList(); } As you can imagine, a ClassCastException is thrown at runtime, but can someone explain why the casting of a List to a HashMap is considered legal at compile time?

  Read the article

• Selective jar packaging.

  - by Lukasz Lew

  I have my small program.jar that uses a small part of huge library.jar. Is there a tool to repackage several jars into one so it can be run stand-alone and is as small as possible?

  Read the article

• Reading http file on url

  - by Nkunzis

  I am trying to read an xml file on an http url. "Unexpected end of file from server" keeps on coming . the page is password protected, I would like to know if I am properly giving in my url authentication details. I tried with non protected pages and I can read them properly. Here is my code: URL url = new URL("http://username:[email protected]:0000/test.xml"); URLConnection yc = url.openConnection(); BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream())); String inputLine; while ((inputLine = in.readLine()) != null) System.out.println(inputLine); in.close();

  Read the article

• How do I change the build's SDK version in Xcode?

  - by Kavon Farvardin

  I'm using Xcode 2.5 on Mac 10.4.11 PPC. javac -version returns 1.5.x yet when I imported my source code and tried to build it in Xcode, I get errors all over because generics, annotations, and for-each loops are not supported in -source 1.3. I thought I found the setting to change the source version in Xcode in the above but it doesn't work. Any ideas?

  Read the article

• How to find out efficiently the auto-generated id for a new object when using JPA?

  - by webstarg

  Hello, I have an attribute which is annotated with @Id. The ID is going to be generated automatically when persisting the object. That means that the ID-value is not defined before I persist the object. After persisting it, it has an ID (in the database), but unfortunately the field still remains null as long as I don't reload it from the DB. is there any easy way to find out the generated id? Or better: To configure that it will be written into the field? Thanks in advance

  Read the article

• how to specify the genric type in runtime

  - by santose

  I'm having a arraylist which I need to specify the type in runtime. ArrayList<String> alist = new ArrayList<String>(); I need to specify the type "String" at runtime. how can I do that. It should not be static.

  Read the article

• Do I get an Integer or int after putting an int into an object array?

  - by derrdji

  Would (1) int a; new Object[] {a} be the same as (2) new Object[] {new Integer(a)} ? If I do the 1st one, will (new Object[]{a})[0] give me an Integer? thank you

  Read the article

• Iterating over hashmap in JSP in struts application

  - by Rozer

  I have a HashMap object that I am getting on a JSP page. HashMap<Integer,Gift_product> gift_hm = new HashMap<Integer,Gift_product>(); gift_hm.put(17,new Gift_product("doll",67)); Now I need to iterate this and display content on JSP. The Gift_product class contains two fields: name and price. JSP output should be serial no. product name price 17 Doll 67 How can I achieve it?

  Read the article

• JPanel superclass doesn't add the components of its subclasses..

  - by Acryl

  Well, I use a JFrame that adds two JPanels. Those JPanels are superclasses, because I find it easier to separate different areas of the GUI into different classes. But here's the problem: I add the (superclass) JPanel to the JFrame I set the layout of the superclass JPanel to new BorderLayout(); I add components in the subclasses, like this: JPanel panel = new JPanel(); panel.setLayout(new GridLayout(2,1)); panel.add(new JLabel("Label:"); panel.add(new JTextField(); add(panel, BorderLayout.NORTH); But it doesn't show. What do I do wrong? I've tried it without an additional JPanel in the subclasses, but it doesn't work either. I use jdk 1.6

  Read the article

• Creating "could not reserve enough space for object heap" error

  - by Paul Reiners

  Is there a utility that uses up memory so I can create a JVM "could not reserve enough space for object heap" error?

  Read the article

• How to change database connection without compiling, using JBoss Seam?

  - by MLB

  Hi there: I am developing a web site in Eclipse using JBoss Seam 1.2. My site uses a database (named ALregcli) hosted in a MySQL server. That database has only one table named trazasfallos. The server I am using is local (localhost). When I deploy the site in an "X HOST", the MySQL server it is not in the same computer... the server is in an "Y HOST", so, the connection will not be stablished to the database. I was changing the Context.xml, but it didn't work. The only way it worked was changing the host to connect to in the Context.xml and "recompiling" all the project. Then, it generates the new version of the compiled class trazasfallos.class, and this is the file I have to overwrite for connecting to a new database server. The point is that I want to make the change without "recompiling" anything... Maybe there is a way to make only a "text change" and it will work (maybe in a .xml file)... but I don't know how to do it!! The question is: how to change the connection to the database without recompiling anything in the site?? I am sorry about my English, I am from Cuba.

  Read the article

• Download File from server that uses Icefaces form based authentication

  - by user266443

  I am a newbie to ICEfaces and i have a requirement where i need to download a document from a given url (http://ipaddress/formexec?objectid=201). This URL uses a form based authentication that is deployed through ICEFaces. i tracked the request of this URL and i get the following line: &ice.submit.partial=false&ice.event.target=loginForm%3Aj_id33&ice.event.captured=loginForm%3Aj_id33 Is there any libraries or code to download the document by successfully passing the username and password.

  Read the article

• Is my way of doing threads in Android correct?

  - by Charlie

  Hi, I'm writing a live wallpaper, and I'm forking off two separate threads in my main wallpaper service. One updates, and the other draws. I was under the impression that once you call thread.start(), it took care of everything for you, but after some trial and error, it seems that if I want my update and draw threads to keep running, I have to manually keep calling their run() methods? In other words, instead of calling start() on both threads and forgetting, I have to manually set up a delayed handler event that calls thread.run() on both the update and draw threads every 16 milliseconds. Is this the correct way of having a long running thread? Also, to kill threads, I'm just setting them to be daemons, then nulling them out. Is this method ok? Most examples I see use some sort of join() / interrupt() in a while loop...I don't understand that one...

  Read the article

• Print unique ascii characters in eclipse console

  - by Shaded

  Hey guys, Kind of a strange question but... here it goes. Recently my application threw an IOException that the text only had a clubs symbol in it (like the suit in cards) I know this is probably because there was a number in there that was cast to a char and printed to the screen, and I've found where that might have happened. The only problem is, I can't recreate it in eclipse because the eclipse console doesn't want to print those characters for me. All I get are boxes. I figure this is an encoding issue or something but I need eclipse to print out those characters just like the windows console would. Is there a setting I can change to do this?

  Read the article

• How to organise my code in order to be able to use two different view type ?

  - by phmr

  I have setup my models and now I would like to build the application so that I can easly switch between swing views and html views (2 differents builds). Could you recommand me any library that let me do that ? or a Controller/View architecture that let me do that myself ?

  Read the article

< Previous Page | 989 990 991 992 993 994 995 996 997 998 999 1000  | Next Page >