java

steganography in images

which is the algorithm suitable for steganography in images project ...

Java: Error "Incompatible datatypes"

private byte[] decode_text(byte[] image) { int length = 0; int offset = 32; for(int i=0; i<32; ++i) { length = (length << 1) | (image[i] & 1); } byte[] result = new byte[length]; for(int b=0; b<result.length; ++b ) { for(int i=0; i<8; ++i, ++offset) { /* I'm getting ...

Unable to start VB application from java

I'm trying to launch VB application from Java, but I'm getting runtime error: Exception in thread "main" java.io.IOException: Cannot run program "C:\Documents and Settings\Dusk\Desktop\accounts.vbs": createProcess error=193, %1 is not a valid Win32 application at java.lang.ProcessBuilder.start(ProcessBuilder.java:459) at chec...

Java to c++ guides

Are there any good guides online to prime an advanced Java user for advanced C++ in a short period of time? ...

How to create a copy of a file in the same directory in java?

I want all the features of file.renameTo in java but without the source file getting deleted. For eg: Say I have a file report.doc and I want to create the file report.xml without report.doc getting deleted. Also, the contents of both the files should be the same. (A simple copy) How do I go about doing this? I know this might be trivia...

JScrollpane scrollbar resizing problem

Hello everyone, I have the following problem: I have JScrollPane containing an image. The scrollpane is inside a JPanel together with other components in order to be able to layout the whole thing with a BorderLayout (the scrollpane is the CENTER and I have something in the SOUTH). This JPanel is in a JSplitPane. The JSplitPane is fina...

How to dynamically generate SQL query based on user’s selections?

This is the same question as: http://stackoverflow.com/questions/2040680/how-to-dynamically-generate-sql-query-based-on-users-selections The only difference is, that I'm interested in seeing solutions also using Java/JPA (+possibly EclipseLink or Hibernate specific extensions). I need to create a GUI, using which users can select seve...

java swing- escape key event causes classCastException in look and feel

Good morning everyone! I need your help! My application processes patient records. In the main frame user can open several internal frames. Each internal frame contains a tabbed pane and each tab created by the user contains a form where he can enter patient's data and a jtable where all added patients are shown. When the user clicks ...

Software development using SNMP

Hi!! I would like to write a code in java for network management and monitoring using snmp. Can somebody tell me how to go about with this? what are the inputs that are needed? Thanks, ann ...

Java: Why does this swap method not work?

Hi. I have the following code: public class Main { static void swap (Integer x, Integer y) { Integer t = x; x = y; y = t; } public static void main(String[] args) { Integer a = 1; Integer b = 2; swap(a, b); System.out.println("a=" + a + " b=" + b); } } I expect it ...

How does Spring 3 expression language interact with property placeholders?

Spring 3 has introduced a new expression language (SpEL) which can be used in bean definitions. The syntax itself is fairly well specified. What isn't clear is how, if at all, SpEL interacts with the property placeholder syntax that was already present in prior versions. Does SpEL have support for property placeholders, or do I have to ...

round robin scheduling java iterators

I have a list of hosts in an array which represnt the servers available to do a particular job. Currently I simply iterate thru the list looking and establish comms with a host to check its not busy. If not I will send a job to it. This approach tends to mean that the first host in the list tends to get hot constanly with the load not ba...

Weblogic 10.3 build path error.

I am trying to resolve a build path error. Which weblogic 10.3 jars contain the j2ee classes (like javax.ejb package etc.) ? ...

initialize java HashSet values by construction

Hello, I need to create a Set with initial values. Set<String> h = new HashSet<String>(); h.add("a"); h.add("b"); Is there a way to do it in one command? Thanks ...

Can't click on a youtube AJAX link with HtmlUnit.

Hello, I'm trying to use htmlunit to click on a link in youtube. Here's the code: HtmlPage page = webClient.getPage("http://www.youtube.com"); HtmlAnchor link = page.getFirstByXPath("//a[contains(@href, 'accounts/ServiceLogin?')]"); page = link.click(); HtmlForm form = page.getFirstByXPath("//form[@id='gaia_loginform']"); form.getInpu...

Is it possble to get all objects from memory?

How to get all objects present in memory? public static void main( String[] arg ){ MyClass object1 = new MyClass(); BigDecimal bd = new BigDecimal(); Object obj = new Object(); List allObjects = getAllObjects(); // return object1, bd, obj ; ; ; } ...

GUI Problem!Network Problem!

Hi, I have two applications,one is for server and the other is for client.at first I run my server application .then I will run the client application.When you run the client application,one frame will be shown which get user name and password and if they were correct,the other frame will be shown.but when I click on the Sign In button ,...

Eclipse, remove override error

Hi, I have overriden a controller class in a java projects in order to add an interceptor, I would like to know if there is anyway I can remove the "error" showing up in Eclipse: The type CRUD is already defined I don't think the code will help much but there you go: package controllers; public abstract class CRUD extends Con...

Video playback in Java ( JMF, Fobs4JMF, Xuggler, FMJ )

I need simple video playback in Java. Here are my requirements: PRODUCTION QUALITY Open and decode video files whose video and audio codecs can be chosen by me. I.E I can pick well behaving codecs. Be able to play, pause, seekToFrame OR seekToTime and stop playback. Essentially I wish to be able to play segments of a single video file...

What happens when two Java frameworks need third one but each of the two need different version of third one?

In my Java project I'm using two different frameworks (let's say A.jar and B.jar) and both of them require one common framework (let's say Log4j.jar) but in two different versions. How it is treated by Java if framework A needs Log4J v1.1 and B needs Log4j v1.2? Will it cause some kind of conflict/error or will by somehow (how?) resolved...