I have this iterator that loops through an object. where answer is a boolean value, that I am trying to set through radio buttons. but the problem is, upon on the generated html, teh radio buttons. is like this It did not have the indice/index. it only gave me the %{#key.index} Answer you have to use property…
Read Content from Files which are inside Zip file
I am trying to create a simple java program which reads and extracts the content from the file(s) inside zip file. Zip file contains 3 files (txt, pdf, docx). I need to read the contents of all these files and I am using Apache Tika for this purpose. Can somebody help me out here to achieve the functionality.…
How to auto start apache tomcat server
I can view the webpage after deploying the war file.when i open the page for next day i cannot view the page again after restarting the apache tomcat server the page opens. Answer You must have shut down the machine. When you come on next day and access the same URL then you won’t be able to see that pa…
How does the “final” keyword in Java work? (I can still modify an object.)
In Java we use final keyword with variables to specify its values are not to be changed. But I see that you can change the value in the constructor / methods of the class. Again, if the variable is static then it is a compilation error. Here is the code: Above code works fine and no errors. Now change the
Java Radio Button Variable Errors
So this works now, and i fixed the variable calling errors. but I get : My GUI Pops up but is blank, what is it now? I cannot figure out what the problem is at this time. This is very important to get resolved, thank you in advance. Answer the first error means when you call buildPanel(String, String) you nee…
Java Thread Sleep and Interrupted Exception
Why does a sleep thread need a try catch to catch Interrupted Exception? Why does a sleep even emit an Interrupted Exception error? This are the two questions I really wanna find out about in java programming I’ve been searching through google and i’ve still haven’t found a clear explanation…
INFO: Illegal access: this web application instance has been stopped already. Could not load java.net.InetAddress
I’m experiencing this kind of exception, can someone help me about this problem? I’m also getting the same exception with Could not load java.net.URLEncoder and Could not load java.net.URLConnection. I’m using Eclipse Indigo SR1 and Tomcat V6.0 Answer You can solve this problem after restart…
What is addNotify();?
I’ve tried to find a laymans definition of addNotify() but I can’t really get any answer using Google. As far as I know, when overriding addNotify() in my class, I should call super.addNotify(); and then do whatever else afterward. My question is, does addNotify() run automatically? What is itR…
jhat throwing unrecognized magic number
I am trying to analyse a heap dump taken from a java process that ran into memory issues. The dump was taken using jmap. I am using jhat on the dump file – I am getting java.io.IOException: Unrecognized magic number: 169897589 at com.sun.tools.hat.internal.parser.Reader.readFile(Reader.java:94) at com.s…
Struts2 i18n messages
I am using Struts 2 and I created a simple application following a tutorial I found. I’ve created a -validation.xml file and I wonder how can I display the validation messages …