I'm searching for a tool, which compiles a JSP file into a Java file without using a servletcontainer like Tomcat or something else. Can anyone help me out?
Can anyone help me? I am currently using eclipse java ide, and would like a plug-in that will automatically look at my classes and draw up a class diagram in UML.
any suggestions?
Has anybody done any benchmarking/evaluation of the popular open-source embedded SQL DBs for performance, particularly write performance? I've some 1:1 comparisons for sqlite, Firebird Embedded, Derby and HSQLDB (others I am missing?) but no across the board comparisons... Also, I'd be interested in the overall developer experience for any of these (for a Java app).
How to identify which server side script language was used with a web site?
Asp.Net? PHP? RoR? Java? or other?
For example, Which server side script language was used with stackoverflow.com?
I am very new to Hibernate. I have MySQL database and mapped pojos. What should I do next? I know little bit LINQ to SQL from .NET, and it generates me List of mapped objects.
So basically, what are my next steps after creating POJOS if I want to have List of them and do CRUD operations upon them and data will be also saved in DB not only in java objects ?
kthx
Hello,
I'm currently having some issues with a Java application I'm developing. Namely the JVM is crashing with a segfault. I'm trying to locate the hs_err.log file which should contain some helpful info about the issue.
However, I can't find this file. I've used find, locate, etc, and nothing.
Any ideas on why the log file isn't being generated?
I am using Lucene with Java. In the index I have a single document with a single name:value-field
text:alabama oklahoma
When I search for
+alabama -oklahoma
it returns no results, as expected.
However, when I search for
-alabama +oklahoma
it returns the single document as a match to the query.
Has anyone else noticed this behaviour? Any ideas on why this happens?
I am a new user of Java swing. I need to be able to create a popup with row info when the user clicks on that row. I managed to incorporate the mouseClick event reaction in my table class, and I have the row info available. But I don't know how to notify the main window about the event so it can display the dialog box/popup box. Can you help me?
I'm trying to resolve a reflection warning in Clojure that seems to result from the lack of type inference on function return values that are normal Java objects.
Trivial example code that demonstrates the issue:
(set! *warn-on-reflection* true)
(defn foo [#^Integer x] (+ 3 x))
(.equals (foo 2) (foo 2))
=> Reflection warning, NO_SOURCE_PATH:10 - call to equals can't be resolved.
true
What is the best way to solve this? Can this be done with type hints?
I am running CentOS 5.5 x86_64 with JDK 1.6, Eclipse Galileo, and the 0.9.7 ADT is installed; however, after installation, the Android project type is not available. I have checked in the installed packages list and it is installed. Anybody encounter this problem before? Could it be due to my use of the 64-bit java VM that is installed on my system?
Consider a private method which is called from JNI and not used otherwise, generating a compiler warning about an unused method:
private void someMethodCalledOnlyFromJNI() { // WARNING: method is never used
// ....
}
This is some legacy code in Java 1.4 - so no dice on @SuppressWarnings.
What hack would you use to suppress this compiler warning?
I have an Android game that has an activity for the menu, and then another activity for the game that creates a SurfaceView and Thread to deal with canvas drawing and game logic. When you exit the game and start it up again too much or if you open and close the keyboard (thus restarting the activity), the game runs out of memory, usually when loading a bitmap:
java.lang.OutOfMemoryError: bitmap size exceeds VM budget
How can I keep all my images in memory without loading them again when the game changes state, or how can I release them from memory and let them reload when the game is restarted?
I was studying the legacy API's in the Java's Collection Framework and I learnt that classes such as Vector and HashTable have been superseded by ArrayList and HashMap.
However still they are NOT deprecated, and deemed as legacy when essentially, deprecation is applied to software features that are superseded and should be avoided, so, I am not sure when is a API deemed legacy and when it is deprecated.
I'm having difficulties with some general OOP & Java approach. There are various ways to let classes/objects communicate with each other. To give a simple example:
I need object A to perform action X.
Object A needs P, Q and R to perform this action X.
Will then Object A retrieve P, Q and R by itself (within action X), or must these values be parameters for action X?
I’d like to know about the computer science. Is that a science or art ?Then what about the Information Technology ? What can be computed and What cannot be computed ? and I'd like to know about the Legal java code.
Could someone recommend a good and inexpensive software synthesizer which generates really good piano sound (sample-based); support for other instruments is not required. OS: Windows or MacOS. Java interface would be a great asset.
Consider the following Java source:
if( agents != null ) {
for( Iterator iter = agents.keySet().iterator(); iter.hasNext(); ) {
// Code that uses iter.next() ...
//
}
}
The agents is a HashMap.
Why does the for statement sometimes throw a NullPointerException?
Thank you.
First time I am bit disappointed in StackOverflow cause my http://stackoverflow.com/questions/2571727/c-concurrency-vs-java-concurrency-which-is-neatly-designed-which-is-better question was closed.
My intension was just trying to gather knowledge from programming guru's who worked in both the programming technologies. Rather closing this question, please help me by discussing what is good, bad, and ugly in multi-threading part in both the platforms.
It is also welcome, if someone would like to compare with .Net 4.0 with JDK 6 (or JDK 7)
Somebody knows an example of this? an application made with JSF 2.0 and EJB 3? directory structure, etc, those kind of things, I’m trying to approach the best way to create a Java EE app using those technologies.
I need to write two versions of the same application, one in .NET and the other one in Java.
So I'd like to write a single test suite, and then use it against both codebases.
Which testing tool would you advise me to use?
I try to open a large number of files but after 5000 files or so I get
Exception in thread "Main" java.io.IOException: The device is not connected
Is this the expected behavior? Is there a way around it? I want to leave my code as straightforward as possible.
I want to do AES CBC encryption in Java. I'm using javax.crypto. After I have the Cipher initialized, do I only need to call doFinal on the clear bytes to properly encrypt it? Or do I need to do something with update?
Documentation says update:
Continues a multiple-part encryption
or decryption operation
and doFinal
Encrypts or decrypts data in a
single-part operation, or finishes a
multiple-part operation
what exactly do they mean by multiple-part encryption?
Hi all,
In my Java servlet code, I want to be able to programatically write to the jetty access log. I am aware that jetty will automatically log every incoming HTTP request to the access log. However, my servlet needs to occasionally append it's own line to the access log. Has anyone here done something similar?
Thanks!
While working in Java, I find it hard to position my Main application window in the very center of the screen when I start the application.
Is there any way I can do that? I tried with some of the predefined methods but none worked.
BTW it doesn't have to be vertically centered, horizontal alignment is the more important goal for me. But vertical alignment is also welcome.
Thanks