I have the following jsp code. I want to add libraries such as java.io. How can I do this? Answer You are almost right, but you need to close the import tag, like this: To declare multiple imports you can either duplicate that entire tag, like so: or use a comma-separated list: For a multitude of reasons, tho…
Lucene: getting the full collection documents as results
When I perform a query in Lucene (topDocs = searcher.search(booleanQuery, 220000);) I get 170 hits as retrieved doc. Which is correct but I would like to have the full list of docs in the results even …
Ignore Assertion failure in a testcase (JUnit)
Currently, I am writing the automation testing using java and selenium rc. I would like to verify all the contents present on the user interface, the function is ie below: The function is supposed to return a String containing information about the testing. However, the function stopped once an assertion erro…
In GWT, How can I get all attributes of an element in the HTML DOM?
I can’t see any method on the com.google.gwt.dom.client.Element class that allows me to get all attributes of an element node. Have I missed anything? Presumably I can get the attributes array of the underlying Javascript object by dropping into native code? I know the results are browser-dependent, but…
is there hash code / Heap address for primitive types in Java?
I was trying to find some approximization to address on heap , and you guys gave me the function System.IdentityHashCode(Object). The problem is – this function doesn’t fit for primitive types. I’ll explain why. I’m given as input Java compiled program – class file. My goal is to…
In java, how to wait on multiple `Conditions` until any one of them is signaled
Suppose an elevator simulation program, visitors about to take a ride are to wait until any one of the elevator doors opens. i.e. I want to wait on multiple Conditions until any one of them is signaled. Actually, it doesn’t have to be Conditions, other approaches that can fulfill my need is welcome. How…
Why is my Eclipse Java package being treated as a folder?
My Eclipse Java package is treated as a folder; can anyone suggest what’s wrong? Answer Worst case, you’ll have to delete the folder and recreate as a java package. Save the Java classes somewhere else in your Java project by refactoring Delete the folder and the underlying folder structure Create…
Java heap space (java.lang.OutOfMemoryError)
In my project, I have a module to upload multiple image and create the thumbnails for it at once. For uploading, I am using JavaFX and for creating thumbnails, I am using Java. I wrote upload code and call of thumbnail creation function inside a for loop. If the number of uploading images is more than five, I…
How to do a Multi field – Phrase search in Lucene?
Title asks it all… I want to do a multi field – phrase search in Lucene.. How to do it ? for example : I have fields as String s[] = {“title”,”author”,”content”}; I want to search harry potter across all fields.. How do I do it ? Can someone please provide an ex…
Java switch statement multiple cases
Just trying to figure out how to use many multiple cases for a Java switch statement. Here’s an example of what I’m trying to do: versus having to do: Any ideas if this possible, or what a good alternative is? Answer Sadly, it’s not possible in Java. You’ll have to resort to using if-e…