Search Results

Search found 21111 results on 845 pages for 'null pointer'.

Page 485/845 | < Previous Page | 481 482 483 484 485 486 487 488 489 490 491 492  | Next Page >

  • Large Table in iFrame crashes IE8

    - by Brian
    I have a page with an iFrame whose source is an ashx page. The handler takes in 3 arguments through the query string and generates a text/html response containing a table. When the table gets 1700 rows it crashes the IE8 browser. The browser freezes and returns a null reference error. If I take the html that is being rendered and place it inside a DIV on the page it renders fine in IE8. Any suggestions?

    Read the article

  • Request URL in Javascript, Fetch URL Content using Java Applet, return to Javascript?

    - by Sam G
    I'm in the process of making a little experiment, it grabs a YouTube page, and returns the highest quality MP4 link, then plays this in a HTML 5 Video element. Now I was using PHP with cURL to get the URL content (YouTube), but that only works on my local server (MP4 link is locked to IP address). I can't think of any other way to get the page content due to cross domain rules except a Java applet. So I've built a Java applet that should return the content of a URL. Java import java.applet.Applet; import java.awt.*; import java.io.ByteArrayOutputStream; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; public class URLFetcherabc extends Applet { public void init() { } public void paint(Graphics g) { g.drawString("Java loaded. Waiting for URL", 0, 10); } public String getURL(String url, String httpMethod) { try { URL u = new URL(url); HttpURLConnection conn = (HttpURLConnection)u.openConnection(); conn.setRequestMethod(httpMethod); InputStream is = conn.getInputStream(); ByteArrayOutputStream output = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; for (int bytesRead = 0; (bytesRead = is.read(buffer)) != -1; ) { output.write(buffer, 0, bytesRead); } return output.toString(); } catch (Exception e) { }return null; } } Now I've got the applet on the page, but every-time I call the function it returns nothing. Heres my HTML for including the applet. HTML <applet id="URLFetcher" name="URLFetcher" code="URLFetcherabc.class" archive="URLFetcher.jar" height="200" width="200" mayscript=""></applet> Java-Script function fetchurl(urltofetch) { var URLFetcher = document.getElementById("URLFetcher"); var result = URLFetcher.getURL(urltofetch); //Result = URL Content return result; } The function always returns null, in Java the function does work when passed a variable via other means (parameter etc). I've tried running other functions through Javascript and the Java applet does respond. I'm new to Java applets and communicating with them via Javascript, so I'm probably making either a small mistake somewhere or its completely wrong. Any ideas? Thanks

    Read the article

  • Use of const in a method

    - by kouPhax
    In the following method, public void InspectList(IList<int> values) { if(values != null) { const string format = "Element At {0}"; foreach(int i in values) { Log(string.Format(format, i)); } } } Does the use of const provide any benefit over just declaring the string as a string? Woudl it not be interned anyway?

    Read the article

  • Mysterious newInstance method

    - by songsungkyun
    First I show some code. library: axis.jar, dom4j.jar jdk1.5, windowsXP T.java import java.io.StringWriter; import org.apache.axis.utils.StringUtils; import org.dom4j.DocumentHelper; import org.dom4j.io.OutputFormat; import org.dom4j.io.XMLWriter; public class T { public T() { System.out.println("constructor"); } public void test() { System.out.println(StringUtils.unescapeNumericChar("1")); } public String getPrettyXML(String xml) throws Exception { System.out.println("getPrettyXML"); StringWriter sw = new StringWriter(); XMLWriter writer = null; try { OutputFormat format = OutputFormat.createPrettyPrint(); org.dom4j.Document document = DocumentHelper.parseText(xml); writer = new XMLWriter(sw, format); writer.write(document); } catch (Exception e) { throw e; } finally { if (writer != null) { try { writer.close(); } catch (Exception e) { } } } return sw.toString(); } public void a() { System.out.println("a"); } public static void main(String[] args) { new T().test(); } } T2.java public class T2 { public static void main(String[] args) throws Exception { System.out.println("T2"); T t = (T) Class.forName("T").newInstance(); } } Ok, here we go... run as (Of course, I'm run at the directory where T.class, T1.class is) java T2 as you can see, not exist class path. ==console== T2 constructor OK... Now delete throw e line at the catch block on the "getPrettyXML" method of T. Ok, here we go.. run one more time without classpath java T2 You can see below... ==console== T2 Exception in thread "main" java.lang.NoClassDefFoundError: org/dom4j/io/OutputFormat at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at T2.main(T2.java:5) I know that it's not very important for my life or your life. But it's so mysterisou to me, and my all curiosity. thanks.. ^^

    Read the article

  • what is this operator called and what is it used for <=>

    - by Scott
    I recently came across this magical operator when digging into Groovy: <= Groovy has really made me happy with elvis operators ?. and ?: which I use constantly now and very much wish were in Java. With this new operator, I have only found this reference. It seems to make comparators much easier. My question is how does it handle null values and how does it compare non Comparable object. Does this operator have a name, I couldn't find it Googling.

    Read the article

  • Google Analytics tacking multiples domain mobile web app

    - by fravelgue
    Hi, I want tracking mobile web application that it is accessed from multiple domains with one google analytics account. I have found some information to do in tradicional web but not in mobile web. Could i change this code in snippet1? if (HttpContext.Current.Request.Url != null) { url.Append("&utmp=").Append(HttpUtility.UrlEncode(Request.Url.PathAndQuery)); to Url.AbsoluteUri Thx in advance,

    Read the article

  • what does "out of range" mean?

    - by user329820
    Hi I have checked these statements with mysql and no error will happen and also the out put will be 0 rows BUT my friend checked it and he found an error for SELECT becaouse it is out of range !! IS he correct? thanks CREATE TABLE T1(A INTEGER NULL); SELECT * FROM T1;

    Read the article

  • SwingWorker exceptions lost even when using wrapper classes

    - by Ti Strga
    I've been struggling with the usability problem of SwingWorker eating any exceptions thrown in the background task, for example, described on this SO thread. That thread gives a nice description of the problem, but doesn't discuss recovering the original exception. The applet I've been handed needs to propagate the exception upwards. But I haven't been able to even catch it. I'm using the SimpleSwingWorker wrapper class from this blog entry specifically to try and address this issue. It's a fairly small class but I'll repost it at the end here just for reference. The calling code looks broadly like try { // lots of code here to prepare data, finishing with SpecialDataHelper helper = new SpecialDataHelper(...stuff...); helper.execute(); } catch (Throwable e) { // used "Throwable" here in desperation to try and get // anything at all to match, including unchecked exceptions // // no luck, this code is never ever used :-( } The wrappers: class SpecialDataHelper extends SimpleSwingWorker { public SpecialDataHelper (SpecialData sd) { this.stuff = etc etc etc; } public Void doInBackground() throws Exception { OurCodeThatThrowsACheckedException(this.stuff); return null; } protected void done() { // called only when successful // never reached if there's an error } } The feature of SimpleSwingWorker is that the actual SwingWorker's done()/get() methods are automatically called. This, in theory, rethrows any exceptions that happened in the background. In practice, nothing is ever caught, and I don't even know why. The SimpleSwingWorker class, for reference, and with nothing elided for brevity: import java.util.concurrent.ExecutionException; import javax.swing.SwingWorker; /** * A drop-in replacement for SwingWorker<Void,Void> but will not silently * swallow exceptions during background execution. * * Taken from http://jonathangiles.net/blog/?p=341 with thanks. */ public abstract class SimpleSwingWorker { private final SwingWorker<Void,Void> worker = new SwingWorker<Void,Void>() { @Override protected Void doInBackground() throws Exception { SimpleSwingWorker.this.doInBackground(); return null; } @Override protected void done() { // Exceptions are lost unless get() is called on the // originating thread. We do so here. try { get(); } catch (final InterruptedException ex) { throw new RuntimeException(ex); } catch (final ExecutionException ex) { throw new RuntimeException(ex.getCause()); } SimpleSwingWorker.this.done(); } }; public SimpleSwingWorker() {} protected abstract Void doInBackground() throws Exception; protected abstract void done(); public void execute() { worker.execute(); } }

    Read the article

  • How to upload a file into database by using Servlet?

    - by user1765496
    Hi all iam working on servlets, so i need to upload a file by using servlet as follows my code. package com.limrasoft.image.servlets; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import javax.servlet.annotation.*; import java.sql.*; @WebServlet(name="serv1",value="/s1") public class Account extends HttpServlet{ public void doPost(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException{ try{ Class.forName("oracle.jdbc.driver.OracleDriver"); Connecection con=null; try{ con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","system","sajid"); PrintWriter pw=res.getWriter(); res.setContentType("text/html"); String s1=req.getParameter("un"); string s2=req.getParameter("pwd"); String s3=req.getParameter("g"); String s4=req.getParameter("uf"); PreparedStatement ps=con.prepareStatement("insert into account(?,?,?,?)"); ps.setString(1,s1); ps.setString(2,s2); ps.setString(3,s3); File file=new File("+s4+"); FileInputStream fis=new FileInputStream(fis); int len=(int)file.length(); ps.setBinaryStream(4,fis,len); int c=ps.executeUpdate(); if(c==0){pw.println("<h1>Registratin fail");} else{pw.println("<h1>Registration fail");} } finally{if(con!=null)con.close();} } catch(ClassNotFoundException ce){pw.println("<h1>Registration Fail");} catch(SQLException se){pw.println("<h1>Registration Fail");} pw.flush(); pw.close(); } } I have written the above code for file upload into database, but it giving error as "HTTP Status 500 - Servlet3.java (The system cannot find the file specified)" Could you plz help me to do this code,thanks in advanse.

    Read the article

  • How can I do a multi level parent-child sort using Linq?

    - by Tenacious T
    How can I do a multi-level parent-child sort using Linq if I have a table structure like the one below: [Table: Sections] Id Seq Name ParentSectionId 1 1 TOP NULL 2 1 AAAA 1 3 2 SSSS 1 4 3 DDDD 1 5 1 SectionA1 2 6 2 SectionA2 2 7 1 SectionS1 3 8 3 ASummary 2 Expected sort result: TOP AAAA SectionA1 SectionA2 ASummary SSSS SectionS1 DDDD

    Read the article

  • How to enable a linkbutton server control using javascript?

    - by satyaj
    I have a linkbutton server control in my page whose Enabled attribute is initially set to "false". When a text box's text changes I would like to enable the linkbutton. I tried the following but it does not work. Could you let me know if i am missing something. function TextBox_TextChanged() { var control = $get("<%= linkButtonSave.ClientID%>"); if(control != null) control.enabled = true; } Thanks

    Read the article

  • PL/SQL 'select in' from a list of values whose type are different from the outer query

    - by Attilah
    I have the following tables : Table1 ( Col1 : varchar2, Col2 : number, Col3 : number) Table2 ( Col1 : number, Col2 : varchar2, Col3 : varchar2) I want to run a query like this : select distinct Col2 from Table1 where Col1 in ( select Col1 from Table2 ) Table1.Col1 is of type varchar2 while Table2.Col1 is of type number. so, I need to do some casting, it seems but it fails to succeed. The problem is that any attempts to run the query returns the following error : ORA-01722: invalid number 01722. 00000 - "invalid number" *Cause: *Action: Table1.Col1 contains some null values.

    Read the article

  • Load data to GdkPixbufLoader from g_input_stream_read

    - by sterh
    Hello, I load some data from file: GInputStream* input_stream; GFile *file = g_file_new_for_path(file_path); input_stream = g_file_read(file,generator_cancellable ,NULL); g_input_stream_read(input_stream, buffer, sizeof (buffer),generator_cancellable,error); How can i load g_input_stream_read function result to the GdkPixbufLoader object? Thank you.

    Read the article

  • Object as itemValue in <f:selectItems>

    - by Ehsun
    Is it possible to have objects as itemValue in tag? for example I have a class Foo: public class Foo { private int id; private String name; private Date date; } And another class Bar public class Bar { private Foo foos; } public class BarBean { private Set<Foo> foos; } Now in a Bean called BarBean I need to have a to get the Foo of the current Bar from User like this: <h:selectOneMenu value="#{barBean.bar.foo}" required="true"> <f:selectItems value="#{barBean.foos}" var="foo" itemLabel="#{foo.name}" itemValue="#{foo}" /> </h:selectOneMenu> ---------------edited: my converter: package ir.khorasancustoms.g2g.converters; import ir.khorasancustoms.g2g.persistance.CatalogValue; import java.util.ResourceBundle; import javax.faces.application.FacesMessage; import javax.faces.component.UIComponent; import javax.faces.context.FacesContext; import javax.faces.convert.Converter; import javax.faces.convert.FacesConverter; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.Transaction; import org.hibernate.cfg.Configuration; @FacesConverter("ir.khorasancustoms.CatalogValueConverter") public class CatalogValueConverter implements Converter { @Override public Object getAsObject(FacesContext context, UIComponent component, String value) { SessionFactory factory = new Configuration().configure().buildSessionFactory(); Session session = factory.openSession(); try { int id = Integer.parseInt(value); CatalogValue catalogValue = (CatalogValue) session.load(CatalogValue .class, id); return catalogValue; } catch (Exception ex) { Transaction tx = session.getTransaction(); if (tx.isActive()) { tx.rollback(); } ResourceBundle rb = ResourceBundle.getBundle("application"); String message = rb.getString("databaseConnectionFailed"); FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_FATAL, message, message)); } finally { session.close(); } return null; } @Override public String getAsString(FacesContext context, UIComponent component, Object value) { return ((CatalogValue) value).getId() + ""; } } and my facelet: <h:outputText value="#{lbls.paymentUnit}:"/> <h:selectOneMenu id="paymentUnit" label="#{lbls.paymentUnit}" value="#{price.price.ctvUnit}" required="true"> <f:selectItems value="#{price.paymentUnits}"/> <f:converter converterId="ir.khorasancustoms.CatalogValueConverter"/> </h:selectOneMenu> <h:message for="paymentUnit" infoClass="info" errorClass="error" warnClass="warning" fatalClass="fatal"/>

    Read the article

  • How to save link with tag e parameters in TextField

    - by xRobot
    I have this simple Post model: class Post(models.Model): title = models.CharField(_('title'), max_length=60, blank=True, null=True) body = models.TextField(_('body')) blog = models.ForeignKey(Blog, related_name="posts") user = models.ForeignKey(User) I want that when I insert in the form the links, the these links are saved in the body from this form: http://www.example.com or www.example.com to this form ( with tag and rel="nofollow" parameter ): <a href="http://www.example.com" rel="nofollow">www.example.com</a> How can I do this ? Thanks ^_^

    Read the article

  • A problem with compare item value

    - by Tony
    Hi, I have defined my class: public class Host { public string Name; } then a strongly-typed dictionary: Dictionary<string, Host> HostsTable; then I try to compare a value: if (HostsTable.Values.Where(s => s.Name == "myhostname") != null) { doSomething } and the problem is, nothing is found, even I'm sure the item is on the list. What I'm doing wrong ?

    Read the article

  • capture types of varargs parameters

    - by IttayD
    Hi, I'd like to define a method accepting varargs, so that I get the types with which it was called even in the case of nulls. def foo(args: Any*) = .... val s: String = null foo(1, s) // i'd like to be able to tell in foo that args(0) is Int, args(1) is String

    Read the article

  • How to execute query with IN clause in spring?

    - by GK
    I have following code : try { MapSqlParameterSource parameters = new MapSqlParameterSource(); parameters.addValue("ids", year); return this.template.getJdbcOperations().query( "SELECT * FROM INCOME WHERE PROVNUM=? AND FISCALDATE IN ( :ids )", this.rowMapper, parameters); }catch (EmptyResultDataAccessException ex) { return null; } But i am not able to send the value for PROVNUM. how to do that? need help, thanks.

    Read the article

  • url routing with strongly typed objects

    - by user510336
    hello all , I am trying to create url routing with strongly typed objects for pages but I keep getting null object on the first line so it's crashing //Getting the suitable executing Page var display = BuildManager.CreateInstanceFromVirtualPath(_virtualPath,typeof(Page)) as IProfileHandler; //Setting Page Parameters display.MemberId = Convert.ToInt32(requestContext.RouteData.Values["ID"]); //Return Page return display; public interface IProfileHandler : IHttpHandler { int MemberId { get; set; } }

    Read the article

  • Alternative to subqueries

    - by Juanma
    I'm using Mysql 5.1, and have this query, is there a way to not use the subqueries and accomplish the same result? SELECT oref.affiliate_id, ROUND(sum( oph.amount ) * 0.10 ,2) AS tsum FROM operators_referer AS oref LEFT JOIN operators_payments_history AS oph ON oref.operator_id = oph.operator_id WHERE oref.affiliate_id = 28221 AND ( oph.date_paid > ( SELECT MAX(aph.date_paid) FROM affiliates_payments_history AS aph WHERE aph.operator_id = oref.affiliate_id ) OR ( SELECT MAX(aph.date_paid) FROM affiliates_payments_history AS aph WHERE aph.operator_id = oref.affiliate_id ) is NULL )

    Read the article

< Previous Page | 481 482 483 484 485 486 487 488 489 490 491 492  | Next Page >