Search Results

Search found 33575 results on 1343 pages for 'java bear'.

Page 442/1343 | < Previous Page | 438 439 440 441 442 443 444 445 446 447 448 449  | Next Page >

• How to generate a random BigInteger value in Java?

  - by Bill the Lizard

  I need to generate arbitrarily large random integers in the range 0 (inclusive) to n (exclusive). My initial thought was to call nextDouble and multiply by n, but once n gets to be larger than 253, the results would no longer be uniformly distributed. BigInteger has the following constructor available: public BigInteger(int numBits, Random rnd) …

  Read the article

• (Why) does Tomcat/Java perform better on Linux than on Windows?

  - by ripper234

  I just read this (one) study in which Tomcat under Linux outperformed Windows. From your experience, is this generally true? Any deep reason that could explain the performance difference?

  Read the article

• Does putting Java source files into a JAR increase the JVM's RAM consummed ?

  - by thecoder

  If not, why not always include sources file into "open source" JAR distributions ? (thanks in advance if you have some official weblinks that explain your answers)

  Read the article

• Is it compulsory to learn about Data Structures if you want to be a Java/C++ programmer ?

  - by happysoul

  So do I like really need to learn about them ? Isn't there an interesting way to learn about stacks, linked lists, heaps ,etc ? I found it a boring subject. **While posting this question it showed some warning.Am I not allowed to post such a question ? Admins please clarify and I will delete it :/ Warning :: The question you're asking appears…

  Read the article

• Is this use of PreparedStatements in a Thread in JAVA correct?

  - by Gormcito

  I'm still an undergrad just working part time and so I'm always trying to be aware of better ways to do things. Recently I had to write a program for work where the main thread of the program would spawn "task" threads (for each db "task" record) which would perform some operations and then update the record to say that it has finished.…

  Read the article

• In Java, how can I test if an Array contains a certain value?

  - by Mike Sickler

  I have a String[] with values like so: public static final String[] VALUES = new String[] {"AB","BC","CD","AE"}; Given String s, is there a good way of testing whether VALUES contains s?

  Read the article

• How to encrypt a RSAKey using another RSAKey?

  - by Tom Brito

  I know its not the usual thing to do. But the specification I'm implementing is discribed this way, and I cannot run out. I was trying to encrypt the modulus and exponent of the private key, but the following test code raises an exception because the byte array is 1 byte larger then the maximum allowed by RSA block: import…

  Read the article

• how to set a infinite loop and break it. (Java threads)

  - by Nubkadiya

  i have set a thread and i want to run it using a loop. so this thread should run in the loop and break in a certain time and again run the loop. please i have no clue how to do this. can someone guide me.

  Read the article

• Is there any possibility to add a outlook calendar (.ics) file to the google calendar form java.

  - by Alex

  i need add a calendar file to google calendar from my code. Is it possible to add a calendar file directly to the google calendar?

  Read the article

• Is there any sample example of Webcam integration in java.

  - by om

  I am creating one swing GUI. In which I have to integrate a Web cam.How should I do that ?

  Read the article

• Can you tell on runtime if you're running java from within a jar?

  - by Dikla

  Hi, I have an application that some of my users run from Eclipse, and others run it by using a jar file. I want some actions to be done when running from within the jar, but I don't want them to be done when running from Eclipse. Is there a way to know on runtime whether the current application is running from within a…

  Read the article

• How to find the class object of Java generic type?

  - by Samuel Yung

  Assume I have a generic type P which is an Enum, that is <P extends Enum<P>>, and I want to get the Enum value from a string, for example: String foo = "foo"; P fooEnum = Enum.valueOf(P.class, foo); This will get a compile error because P.class is invalid. So what can I do in order to make the above code…

  Read the article

• What features do you expect from a Java (Rich) Client Framework?

  - by Peter Walser

  I'm intending to design (and provide a reference implementation for) a new Swing Rich Client Framework. My job and personal experience covers many project-specific Swing client frameworks as well as the Eclipse RCP, and every one of them had some original and clever concepts, but also drawbacks and rigid realizations. …

  Read the article

• Java, How to Instance HttpCookie from a String, any convenient ways?

  - by user435657

  Hi all, I have got a cookie string from HTTP response header like the following line: name=value; path=/; domain=.g.cn; expire=... I can parse the above line to key-value pairs, and, also it's easy to set the name and value to HttpCookie instance as this pair comes the first. But how to set the other pairs since I…

  Read the article

• best way in java to rename a file , there are about 500 files in a directory.

  - by Suresh S

  I have 500 pdf files in a directory. i want to remove first five character of a filename and rename it. please let me know your comments.

  Read the article

• Java Persistence: Cast to something the result of Query.getResultList() ?

  - by GuiSim

  Hey everyone, I'm new to persistence / hibernate and I need your help. Here's the situation. I have a table that contains some stuff. Let's call them Persons. I'd like to get all the entries from the database that are in that table. I have a Person class that is a simple POJO with a property for each column in the…

  Read the article

• How come JFrame window size in Java does not produce the size of window specified?

  - by typoknig

  Hi all, I am just messing around trying to make a game right now, but I have had this problem before too. When I specify a specific window size (1024 x 768 for instance) the window produced is just a little larger than what I specified. Very annoying. Is there a reason for this? How do I correct it so the window…

  Read the article

• How to set session timeout dinamically in java web applications?

  - by Jonathas Carrijo

  Hi, I need to give my user a web interface to change the session timeout interval. So, each installation of the application might have different timeouts for their sessions, but they web.xml cannot be different. Is there a way to set the session timeout programatically, so that I could use, say,…

  Read the article

• How to find out if a Java ResultSet obtained is empty?

  - by Bruce

  Class.forName("org.sqlite.JDBC"); Connection conn = DriverManager.getConnection("jdbc:sqlite:userdata.db"); Statement stat = conn.createStatement(); ResultSet rs = stat.executeQuery("SELECT * from table WHERE is_query_processed = 0;"); How can I find out if rs is empty?

  Read the article

• Is there a way to launch an aggressive and complete garbage collection in Java?

  - by Gnoupi

  For memory optimization reasons, I'm launching myself the garbage collector during profiling, to check if objects are correctly cleaned after disposing of them. The call to garbage collector is not enough, though, and it seems that there is no guarantee of what it will clean. Is there a way to…

  Read the article

• Java. Writing a matrix in a file using column information. ( matrix transposition )

  - by Dmitry

  Hello, everybody! I have a file in which a matrix is stored. This file has a RandomAccessFile type. This matrix is stored by columns. I mean that in an i-th row of this matrix an i-th column (of a real matrix) is stored. There is an example: i-th row: 1 2 3 4 (in the file). That means that the…

  Read the article

• can I rotate the button or label into vertically in java?

  - by Venkats

  I want button in vertically, for that i can extend the height and shrink the width of that button. But the text of the lable of buttons are in the form of horizontal only. For that can i rotate the whole button vertically and is it possible?

  Read the article

• Is there some tool to visualize Java class hierarchies and relations?

  - by Niyaz

  Here is my problem: I will provide the source code of my application as input and what I want as output is a visual representation of the relationship between classes, method calls etc. Is there some tool to do this?

  Read the article

• Java: how can I split an ArrayList in multiple small ArrayLists ?

  - by Patrick

  hi, how can split an ArrayList (size=1000) in multiple ArrayLists of the same size (=10) ? ArrayList results; Thanks

  Read the article

• How can two programs talk to each other in Java?

  - by Arnon

  I want to ?reduce? the CPU usage/ROM usage/RAM usage - generally?, all system resources that my app uses - who doesn't? :) For this reason I want to split the preferences window from the rest of the application, and let the preferences window to run as ?independent? program. The preferences…

  Read the article

< Previous Page | 438 439 440 441 442 443 444 445 446 447 448 449  | Next Page >