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  • Column moved [finished] event in JTable

    - by chown
    How should I detect that column moved action is finished in JTable? I've added columnModeListener to my column model but the problem is columnMoved method is called every time a column moves (by certain pixels). I don't want this behavior. I just want to detect when the column dragging is finished. columnModel.addColumnModelListener(new TableColumnModelListener() { public void columnAdded(TableColumnModelEvent e) { } public void columnRemoved(TableColumnModelEvent e) { } public void columnMoved(TableColumnModelEvent e) { //this is called so many times //I don't want this, but something like column moved finished event System.out.println("Moved "+e.getFromIndex()+", "+e.getToIndex()); } public void columnMarginChanged(ChangeEvent e) { } public void columnSelectionChanged(ListSelectionEvent e) { } }); I hope it is clear what I'm looking for. Thanks.

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  • Searching major search engines with text such as <%#

    - by Daniel Dyson
    If I type '<%# vs <%"' into any of the major search engines, everything is stripped out except the 'vs'. I understand why they do this. I would just like to know if anyone knows of a way to escape illegal characters so that they are searched properly. I know this is not strictly a programming question, but it is relevant.

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  • What is the correct way to set size of elements of GUI?

    - by Roman
    I am using swing to create my GUI. J have a JFrame containing one main JPanel which, in its turn contain several JPanels which, in their turn, contain buttons. I would like to set certain sizes to mu buttons and JPanels. How does it work? Should I set sizes of my buttons and then the size of the JPanel and the JFrame will be set according to the buttons sizes? Or it works in the opposite direction? I set size for the JPanel and the size of the buttons will be set automatically?

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  • Why would you use a MyObject[] internally, but expose a List<MyObject>?

    - by timmyd
    I have come across a class that has an immutable property: MyObject[] allObjs The property is initialized like this: List<MyObject> objs = createAllMyObjects(); allObjs = objs.toArray(new MyObject[objs.size()]); When it is exposed through the accessor, it's done as a List: public List<MyObject> getAllMyObjects() { return Collections.unmodifiableList(Arrays.asList(allObjs)); } Why would a programmer do this? Is there a benefit that I don't know about? Performance is not a concern, as the array of objs will only ever number in a few dozen elements. It seems that we are going round and round in circles. The class is a sort of factory, so it's got a private constructor and exposes only static methods (not sure if this could be a reason for the madness).

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  • hibernat createSQLQuery use CacheQuery?

    - by cometta
    Query query=getHibernateTemplate().getSessionFactory().getCurrentSession().createSQLQuery( "select... getHibernateTemplate().setCacheQueries(true); List result= query.list(); getHibernateTemplate().setCacheQueries(false); return result; may i know when i do manual "createSQLQuery" how to use cacheQuery? the above doesnt cache the result. show_sql still showing every request get from database

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  • Sort an object by an other one.

    - by kevinb92
    Here's the deal : I have Publication objets in my application. I also have Vote objet. I can add votes on publication. A vote is defined like this, forOrAgainst, LinkedPublication, date, author etc etc... I want to sort Publication list by number of vote. What is the best way to link them ? Should i return a hashmap ? a treeset ? How do i add votes to publication. It's kinda messy in my brain now...

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  • String[] initialized by null???

    - by Esmond
    Hi i encountered this problem whereby when i initialized my String[], there seems to be a null in the String[] before i do anything. How do i initialized the String[] to be completely empty,i.e. without the null at the start? The output for the following code is: nullABC nullABC nullABC nullABC nullABC public static void main(String[] args){ String[] inputArr = new String[5]; for (int i = 0; i< inputArr.length; i++){ inputArr[i] += "ABC"; } for (int i = 0; i< inputArr.length; i++){ System.out.println(inputArr[i]); } } }

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  • Dynamic class annotation

    - by jlanza
    Hi, I want to annotate a class dynamically to make it the more generic as possible: public class Test<T> { @XmlAttribute(name = dynamicvalue) T[] data; public Test(String dynamicvalue) { } } Is there any way to achieve something like this. TA

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  • process.waitFor()

    - by ashwani66476
    Hello Team, I am using the below code in my application ... Process process = Runtime.getRuntime().exec( "perl " + perlScript + " " + project + " " + fileName); : : : result = process.waitFor(); : : and this result gives the code 2 every time.....while running the application. what could be the reason for the "reason code" ??? Thanks In Advance

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  • 1:M relationship in Hibernate and cascading operations

    - by EugeneP
    Table SUBCOURSE references COURSE COURSE(id, name) SUBCOURSE(id, course_id, name) So, 1:M. Hibernate generates for Course: @OneToMany(fetch = FetchType.LAZY, mappedBy = "course", cascade = CascadeType.ALL) public Set getSubCourses() { return this.subCourses; } for Subcourse it generates @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "course_id", nullable = false) public Course getCourse() { return this.course; } Now the problem is that cascading does not work as expected. I want to create a collection of SubCourse objects (Set), fill it and then bind it to setSubCourses() of Course object. Though, having ManyToOne thing in a Subcourses table, I need to manually setCourse() before adding to collection on each object. If I do not do so, an exception is raised. What can you recommend me?

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  • JDBC delete statement with multiple columns

    - by user1643033
    It says I ended this statement wrong when if I input it into sql plus with just the addition of ; it works perfectly. What am I doing wrong? Statement statement = connection.createStatement(); statement.executeUpdate("delete from aplbuk MODEL = '"+ textField_4.getText() + "'AND year = '" + textField_1.getText() + "' AND Litres = '" + textField_2.getText() + "' AND ENGINE_TYPE = '" + textField_3.getText() + "'"); statement.close();

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  • bluetooth BluetoothSocket.connect() thread. how to close this thread

    - by Hia
    I am trying to make an android app that makes connection with bluetooth device. It works fine but when I call BluetoothSocket.connect() and it is not able to connect to devise its blocking. The thread and does not throw any exception. So when I try to close application while connect() is running its not responding. How can I cancel it? Used BluetoothSocket.close() in ... but still its not working for me. protected void simpleComm(Integer port) { // The documents tell us to cancel the discovery process. try { Method m = mmDevice.getClass().getMethod("createRfcommSocket", new Class[] { int.class }); mmSocket = (BluetoothSocket) m.invoke(mmDevice, port); mmSocket.connect(); // <== blocks untill is not connected Log.d(TAG, " connection success==="); }catch(Exception e){ if (!abort) { connectionFailed(); // Close the socket try { mmSocket.close(); // Start the service over to restart listening mode BluetoothService.this.start(); } catch (IOException e2) { Log.e(TAG,"unable to close() socket during connection failure", e2); } } return; } } public void cancel() { try { abort = true; mmSocket.close(); } catch (IOException e) { Log.e(TAG, "close() of connect socket failed", e); } }

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  • Can I un-assign (clear) all fields of an instance?

    - by Roman
    Is there a simple way to clear all fields of an instance from a an instance? I mean, I would like to remove all values assigned to the fields of an instance. ADDED From the main thread I start a window and another thread which controls state of the window (the last thread, for example, display certain panels for a certain period of time). I have a class which contains state of the window (on which stage the user is, which buttons he already clicked). In the end, user may want to start the whole process from the beginning (it is a game). So, I decided. So, if everything is executed from the beginning, I would like to have all parameter to be clean (fresh, unassigned). ADDED The main thread, creates the new object which is executed in a new thread (and the old thread is finished). So, I cannot create a new object from the old thread. I just have a loop in the second thread.

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