Error Calling Method On Npobject Java Applet
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Error Calling Method On Npobject Javascript
Stack Overflow the company Business Learn more about hiring developers or posting ads error calling method on npobject android webview with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow error calling method on npobject firefox is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Accessing Java Applet non-static methods using Java up vote 1 down vote favorite
Error Calling Method On Npobject Safari
I'm trying to access non-static methods in a java applet, through javascript. I access static methods using the Syntax AppletName.Packages.className.methodName(); and it works. If I try to access a non-static member/method via JavaScript, I get an error "Error calling method on NPObject", but nothing on the Java Console. Is there a way to access non-static applet methods from Javascript? java javascript applet non-static japplet share|improve this question asked Jun 27
Error Calling Method On Npobject Flash
'11 at 13:58 Anirudh Ramanathan 32k1177120 add a comment| 2 Answers 2 active oldest votes up vote 1 down vote accepted You need to instantiate a java object, then you can call your methods. var myClass = new AppletName.Packages.className(); myClass.methodName(); From here. share|improve this answer answered Jun 27 '11 at 14:19 Ravan 4,96111126 add a comment| up vote 0 down vote See Call a Java method from Javascript. share|improve this answer answered Jun 27 '11 at 14:27 Andrew Thompson 137k19130250 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other questions tagged java javascript applet non-static japplet or ask your own question. asked 5 years ago viewed 2450 times active 5 years ago Related 68calling non-static method in static method in Java1Java - Applet simply not displaying?0Java applet permission denied, security exception1Converting a Java Application into an Applet0Returning a dragged applet to the browser window with Javascript0Signed Applet With Javascript Function Call: Init
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn uncaught error error calling method on npobject more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How do I fix “Error calling method on NPObject!” when invoking http://stackoverflow.com/questions/6494011/accessing-java-applet-non-static-methods-using-java methods on a signed applet from within javascript? up vote 1 down vote favorite I am using a java applet that performs functionality that requires access outside the browser sandbox. The applet is prepared as follows: All calls requiring privileged access are wrapped appropriately in calls to AccessController.doPrivileged(). The jar is signed and includes a certificate chain that validates with jarsigner -verify (output is "jar verified."). The MANIFEST.MF http://stackoverflow.com/questions/37734820/how-do-i-fix-error-calling-method-on-npobject-when-invoking-methods-on-a-sign in the jar contains: Manifest-Version: 1.0 Created-By: 1.8.0_05 (Oracle Corporation) Permissions: all-permissions The jnlp file contains:
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack http://stackoverflow.com/questions/826669/trouble-calling-an-applet-method-from-page Overflow the company Business Learn more about hiring developers or posting ads with us http://www.webdeveloper.com/forum/showthread.php?216029-File-access-with-a-java-applet Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Trouble calling an applet method from page up vote 1 down vote favorite I know error calling it's not optimal, but I have to work with it, a page making calls to the applet. My problem is, when I do so, I recieve a rather cryptic error message: "uncaught exception: Error calling method on NPObject! [plugin exception: java.lang.reflect.InvocationTargetException]." Can anyone decode this? Even multiple possibilities would be better than the junk I came up with. The basic call to the applet is from a javascript call: document.getElementById('my_applet').passData("pass some error calling method data", someOtherData); As you can see, the passData method is the exposed method I am trying to use. The applet itself works fine on the page, it's just when I try to call this, it doesn't do anything except throw that error. If I ask the person working on the applet (it's not my portion) is it possible for them to add constructive error throwing or am I not even at the point of connecting to the applet yet? java javascript gwt applet share|improve this question asked May 5 '09 at 20:00 Organiccat 2,914134282 add a comment| 2 Answers 2 active oldest votes up vote 4 down vote accepted InvocationTargetException indicates that the underlying method in your applet threw an exception. The Javascript to Java "boundary" uses reflection, so exceptions thrown by the Java code are wrapped like this. (This makes it possible to distinguish them from exceptions thrown before you got into your Java code. For example, if you tried to call a non-existant method.) You can get the original exception by catching the InvocationTargetException and then calling its getTargetException() or getCause() method (they both do exactly the same thing). share|improve this answer answered May 5 '09 at 20:24 Laurence Gonsalves 77k15145203 Thanks, that's definitely going to hel
applet If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 5 of 5 Thread: File access with a java applet Tweet Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 09-02-2009,11:32 AM #1 DJRobThaMan View Profile View Forum Posts Somebody Join Date Jul 2003 Posts 259 File access with a java applet Hi, I've been doing much research on how to access files on a client's file system from a java applet and all the results I've found don't seem to get me anywhere. My applet runs correctly when I run it straight out of Eclipse and here is the code: Code: import java.applet.*; import java.io.*; public class uploader extends Applet { public String[][] listfiles(String loc) { File folder = new File(loc); String[] contents = folder.list(); String[][] fullcontent = new String[contents.length + 1][2]; int i = 0; File temp; fullcontent[fullcontent.length - 1][0] = "This worked"; while(i < contents.length) { temp = new File(folder + contents[i]); fullcontent[i][0] = contents[i]; if(temp.isDirectory()) { fullcontent[i][1] = "dir"; } else { fullcontent[i][1] = "file"; } i++; } return fullcontent; } public void init() { } } It's fairly straightforward. The code reads the contents of any given folder on a client's filesystem and returns their filenames. I'm trying to use this applet to upload multiple files or even folders to a server. What I'd like to do with this is for the java applet to be a sort of bridge between the client's file and the php that will then upload all the files. I'm not sure if it wil