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Java Core APIs

• JMX Remote and MBeans in separate Processes

• Hi,I found on Sun blogs - http://blogs.sun.com/jmxetc/entry/what_is_jmx following: "An EJB lives in an Application Server container. It usually implements business logic. An MBean lives in an MBeanServer, and usually implements management logic"That means, when an MBeanServer is killed, an ...
• Fri, 03 Sep 2010 04:50:00 GMT | 1,080 bytes | Answers (4)

• JavaMail jar, where do I put it?

• I'm trying to send email from a web form using the JavaMail API...but I'm fairly new to Java and I'm not sure what I'm doing wrong.I'm using NetBeans and I downloaded the JavaMail API from Sun. Where do I put it? How do I "install" it?I tried putting it in the JDK "lib" direc...
• Fri, 03 Sep 2010 04:50:00 GMT | 527 bytes | Answers (1)

• Runtime.exec GUI

• Hello,I have built a gui around a stand-alone executable, which is an image processing algorithm, which should be run let us say 10 times, on different images.Thus when pressing let us say the start-button, the program should be executed.I can do this by ...
• Fri, 03 Sep 2010 04:50:00 GMT | 1,450 bytes | Answers (7)

• Having interesting Syntax problem

• I havnt coded Java in about 8 months or so, so I sat down last night to just make a small program with simple input and output. Well I got the output no prob, but the input wont be accepted by the compiler. I am using Net Beans to write with. Here is the code with the bolded trouble areas:packag...
• Fri, 03 Sep 2010 03:50:00 GMT | 1,284 bytes | Answers (5)

• Jtext Area and Telneting

• Hello,This program is able to telnet into a remote machine and the text is displayed using JTextArea. However whin I do a 'dir' on the hostmy JtextArea (Using setText(String)) appears to be getting the data yetno other data is displayed.Any sugesstions? (Please see the code ...
• Fri, 03 Sep 2010 02:50:00 GMT | 9,621 bytes | Answers (4)

• wildcards and class definitions

• Is it possible to have a class definition as(note that my foo is a container of some sort) public class Foo<? extends C> Meaning that anytime we make a Foo, we can put anything into it that extends C. Currently, it appears that the specification does not handle this.Any ...
• Fri, 03 Sep 2010 01:50:00 GMT | 350 bytes | Answers (1)

• ServletContext, ServletConfig and Pagecontext

• What is the differnce between ServletContext, ServletConfig and Pagecontext?Thanks,aakash...
• Fri, 03 Sep 2010 00:50:00 GMT | 101 bytes | Answers (7)

• Polling the server, bad idea?

• Hey GuysIve got a quick question. My rmi client checks the server every 10 seconds to see if there is an update. I was wondering if this was costly to the server, calling a remote method constantly.Steps:1. The client registers with the server2. the server sends a user object back to the ...
• Fri, 03 Sep 2010 00:50:00 GMT | 2,174 bytes | Answers (7)

• get instance of object in another program

• how can i go about getting a reference to an object that is running in another java program?What i want to do is have one program running all the time, and then when another program starts, have that new program get the instance (get a reference) of one of the objects in the first program.thank ...
• Thu, 02 Sep 2010 22:50:00 GMT | 321 bytes | Answers (5)

• Java Communications API Tutorial

• Hi!Do you have any idea if there is any tutorial forJava Communication API?...
• Thu, 02 Sep 2010 21:50:00 GMT | 96 bytes | Answers (1)

• A trouble with the samples in JSDT.

• Hi, everyone! When browsing whiteborad in the brwoser of client, there occurs an exception, java.lang.NoClassDefFoundError: com/sun/media/jsdt/ClientI find c:\JSDT-2.0\lib\jsdt.jar in my classpath. But the trouble still occurs. BTW: the JSDT server runs properly. How to resolve the trouble? ...
• Thu, 02 Sep 2010 19:50:00 GMT | 388 bytes | Answers (1)

• best practices

• Hi,I am designing a web-interface for a research project. Basically this interface would allow users to access some services through the net. When I started to design, I had all these technologies like servlets, JSP, JSF, frameworks like Struts etc, MVC pattern.I decided to use servlets,Javascri...
• Thu, 02 Sep 2010 18:50:00 GMT | 1,434 bytes | Answers (2)

• How can I pass two objects to a servlet from an applet?

• I have an applet that attempts to pass two objects to a servlet: 1. An array list, and 2. A simple string.In the servlet, I have code that tries to read both objects (sent from the applet) like this: inputFromApplet = new ObjectInputStream(request.getInputStream()); classSchedule = (ArrayList) n...
• Thu, 02 Sep 2010 17:50:00 GMT | 1,003 bytes | Answers (2)

• Newbie Reflection Problem

• Hi I want to be able to generate code from an xml defintion at run time. I define an XML schema which defines java classes, methods and also a mapping between one method's output and another method's input:ExampleI want to be able to generate this piece of code:where type is a String ...
• Thu, 02 Sep 2010 17:50:00 GMT | 742 bytes | Answers (3)

• Sending File from Server to Client.....

• Hello to all...Can anyone favor me to help about how i can send file from server to client(RMI)...okBye...
• Thu, 02 Sep 2010 16:50:00 GMT | 112 bytes | Answers (13)

• how to disable tomcat to set 'Etag' and 'last-modified'in the http resonse

• hi,I use Tomcat to server a static image (i put the image in the 'images' under WEB-INF directory).But when I do a HTTP trace, it always send back 'Etag' , 'Last-Modified' in http response.HTTP/1.x 200 OKEtag: W/"942-1165631787000"Last-Modified: Sat, 09 Dec 2006 02:36:27...
• Thu, 02 Sep 2010 16:50:00 GMT | 537 bytes | Answers (6)

• Please help, I'm going nuts creating a stub!

• Hi.I've spent the last three hours trying to create a stub. The problem is when I execute the rmic command.I get the following error:C:\Program Files\Java\jdk1.5.0_09\bin>rmic server.RemoteBrokerImplerror: Class server.RemoteBrokerImpl not found.1 errorI'm sure it's a classpath problem, ...
• Thu, 02 Sep 2010 15:50:00 GMT | 1,121 bytes | Answers (1)

• how can i call a applet from a java script?

• 1.how can i call a applet from a java script? ]...
• Thu, 02 Sep 2010 13:50:00 GMT | 47 bytes | Answers (1)

• dynamically populate drop-down box?

• I may be way off here, but is there a way to dynamically populate, using jsp, a drop-down box (a regular html form object)? I would need to access an oracle database, and pull up all the records in 1 column which would make up my drop-down list. I would need to dynamically do this, in case new r...
• Thu, 02 Sep 2010 12:50:00 GMT | 377 bytes | Answers (5)

• advantage of using servlet-name element in DD

• My undersatnding says that we use <servlet-name> to tie a <servlet> elemet to a specific <servlet-mapping> element.e.g.<servlet><servlet-name>myservlet</servlet-name><servlet-class>myservlet.class</servlet-class><servlet><servlet-mapping&g...
• Thu, 02 Sep 2010 11:50:00 GMT | 734 bytes | Answers (2)