36,051 Topics
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 | hello all friends i need your help in java.library.path setting.i use a TPM/j API to develop an application using Trusted Platform Module (TPM) specification and to use TPM/j API i need to set java.library.path and load TBSProxy.dll. I try to set java.library.path using DOS and it not works. C:\Users\lfgs\tpm\tpmj>java -Djava.library.path=C:\Users\lfgs\tpm\tpmj\lib\ … |
| | Hi, I am trying to learn creating my exceptions in java. My classes are : [CODE] public class Test { public static void main(String args[]) { Test et = new Test(); int x1=5; int x2=0; try { et.printResults(x1, x2); } catch (DivideByZeroException dbz) { System.out.println(dbz.toString()); dbz.printStackTrace(); } finally { System.out.println("The … |
 | Hi. I need to create a bean class from list of properties in property file. So that if i need more fields in bean i don't need to go and change code. Instead just add a property in file and at runtime, a field with given name be added to … |
| | i need to find all the files in the directory and sub directory that have a text file..within this text file there is a string called average with some value.. the code below works fine for a single directory...but i need to find the same text files in the sub … |
| | I am mostly following this page: [url]http://tomcat.apache.org/tomcat-6.0-doc/ssl-howto.html[/url] I used this command to create the keystore keytool -genkey -alias tomcat -keyalg RSA -keystore /etc/tomcat6/keystore and answered the prompts Then i edited my server.xml file and uncommented/edited this line [code] <Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol" SSLEnabled="true" maxThreads="150" scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" keystoreFile="/etc/tomcat6/keystore" keystorePass="tomcat" /> … |
| | hi forum, i am using an arraylist for storing a list of objects.i dont want the objects in the list to be ordered but the list should be duplicate free.how can i achieve this.plz help quickly.provide source code if possible.thanks in advance.  |
| | so i need some help, have random int that decide which values in my Boolean array are true. All th [CODE] System.out.println ("pick a number 1-9"); int guess; for ( int i = 0; i < 9; ++i ){ guess = console.nextInt(); if (x[i] = true) { System.out.println("CORRECT!!"); }else if … |
| | Hi I would really appreciate if someone could tell me what I am doing wrong. I think I have a major error but I can't seem to find out where it is =( My assignment is due tomorrow so if anyone would be up right now and could tell me … |
| | Dear fellow programmers, I had tried and successfuly created JVM and used JNI from C++ executable. But when I change my C++ executable into a shared library (.so, in UNIX) like this [CODE] extern "C" int callFromFakeSID(char* name) { JNIEnv *env; JavaVM * jvm; env = UART_Display_Java::create_vm(&jvm); if (env == … |
 | Hi all, Im using hibernate in netbeans to map to a mysql database, but am having problems.... when I open a session: [CODE]Session session = SessionFactoryUtil.getInstance().openSession(); session.beginTransaction();[/CODE] it prints out this in the console:... [COLOR="Red"]12/04/2010 9:50:26 AM org.hibernate.cfg.annotations.Version <clinit> INFO: Hibernate Annotations 3.3.1.GA 12/04/2010 9:50:26 AM org.hibernate.cfg.Environment <clinit> INFO: Hibernate … |
| | I just cannot figure out what is wrong, so tried. Can someone please help me so I can finish this today or tomorrow please. [code] //adds all 10 panels together this.add(mainpanel); //set see the frame setVisible(true); } JOptionPane.showMessageDialog(null,"Oringinal Balance = $" + recieveAmount + "\nPayment#" + x + "\nMonthly Payment$" … |
| | I am having trouble adding the ability to order an integer array in both ascending and descending order. I have implemented the functions myself and am having trouble figuring out how to order them in reverse order. I am passing in a boolean variable to test which direction the array … |
| | Hi i have been trying to get a GUI in BlueJ working properly but i hav come across a prolem, i hav 2 buttons which i want to use but when i click them the actionListener wont run my methods. In the action preformed bit i tried to make it … |
| | My main.java [CODE] public static void main(String[] args) { // TODO code application logic here Rational x = new Rational (); x.num = 2.0; x.den = 3.0; System.out.println (x); Rational.negate (x); Rational y = new Rational (1.0, 3.0); System.out.println (Rational.invert (y)); } [/CODE] My rational.java [CODE] package rational; public class … |
| | [code=java] import java.io.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.text.*; import java.util.*; public class Transfer extends JFrame implements ActionListener { //Declare output stream DataOutputStream output; //Construct a panel for the fields and buttons JPanel fieldPanel = new JPanel(); JPanel buttonPanel = new JPanel(); //Construct labels and text boxes JLabel … |
| | In here: [url]http://java.sun.com/docs/books/tutorial/uiswing/components/toplevel.html#general[/url] It says: The default content pane is a simple intermediate container that inherits from JComponent, and that uses a BorderLayout as its layout manager. In here: [url]http://java.sun.com/docs/books/tutorial/uiswing/components/jcomponent.html[/url] It says: The JComponent class extends the Container class, which itself extends Component. This is contradictory, isn't it? Also what … |
| | hello to everybody I have a linked list that contains objects each object contains two String field I want to know how to check if the object that i want insert is already exists in the linked list thank you |
| | Can somebody help me in reading text from a file without using Java Class Library??? |
| | I'm having trouble writing code to save binary trees that are created by my program. I'm trying to save the tree to a file by trying to use preOrder traversal and writing the data that way. But so far nothing gets written to the text file. I'm supposed to write … |
| | im trying to take an inputed file and use a linked list to read it and display the most frequently used word. Anybody know how to do it? [CODE] import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.util.*; public class mostFrequentWord { LinkedList<Word> list = new LinkedList<Word>(); public void Read() throws … |
| | I'm trying to wrap the following so it shows up easily on the prompt screen. How can I wrap it up? [CODE] System.out.println("Anwser the following trivia questions with a true/false input. Since I am" "a horrible programmer, you will have to enter 1 for True and 2 for False. If … |
| | Hey guys! I have a program I am writing that I have gotten stuck on. It compiles fine but when I run it I get several error messages. Illegal format Conversion Exception is one of the error messages. I am stuck and I don't see where the error is. Any … |
| | Hello people, Im getting an "Exception occured ---java.lang.NullPointerException" error when i try running the code below: [code=Java]public void Register(String Username, String Password, String Surname, String Firstname, String Email, String Phone) { String a = Username; String b = Password; String c = Surname; String d = Firstname; String k = … |
| | From the java generics tutorial: "[CODE]List<String>[] lsa = new List<String>[10]; // not really allowed String s = lsa[1].get(0); // run-time error - ClassCastException[/CODE] If arrays of parameterized type were allowed, the example above would compile without any unchecked warnings, and yet fail at run-time." I have problem understanding why would … |
| | On line no no of stars 1 1 2 3 3 5 4 3 5 1 * *** ***** *** *  |
| | Can Java read it's own source code? Possibly by using reflection.. or something. I would like to dynamically display the code to each method inside of my interface. Any idea how that could be acheived? Thank you. |
| | Hello and thanks in advance for your time. Why is the InputStream not excepting the String path to a package containing a properties file? [code] private void writeBtnActionPerformed(java.awt.event.ActionEvent evt) { String path="/view/resources/projectnames.properties"; String txtIn=writeTxt.getText(); PropertyWriter pw = new PropertyWriter(); try { pw.StreamToString(path, txtIn); } catch (IOException ex) { Logger.getLogger(WriteContentTab.class.getName()).log(Level.SEVERE, null, … |
| | Hi, I'm trying to find a way for the user to draw an image on the screen, and then return a formal version of the image. This is a tool to enable practise writing symbols from an ancient language. What I mean by a formal version is the properly drawn … |
| | Ihv writtten a prog of file searching and the result is to be displayed in table Im geting exception of stringindexoutofbound: String index out of range: -1 at java.lang.string.substring(unknown source) if i changed the path E:/ to e:/programs (program is some folder) then prog run correctly but i want to … |
| | Hello, I have tried to solve this problem but I cannot, its been over a week. I need help in designing the solution for this problem. I need to make a system of food processing, food is inputted to machines, where it is processed and packed. If you can contact … |
| | [CODE] import java.util.*; import java.util.Scanner; public class InputconsoleArray2 { public static void main(String args[]) throws java.io.IOException { int[] a=new int[100]; // create an array of type interger size // Objects of type Scanner are useful for breaking down formatted input into tokens and // translating individual tokens according to their … |
| | Hey guys ........plz can you suggest me any project wic uses simple java and sql and may be connectivity between java and sql I am in 12th standard and want to make a good project related to above items......................  |
| | Produce THREE buttons using SWING package. Each of the three buttons will react according to their respective tooltips. - Button A: set to Enabled and show the tooltip "Click this button to enable the Button C.” After this button is clicked, it should disable itself and Button B. - Button … |
| | Write a program that will determine whether a deparment store customer has exceeded the credit limit on a charge account(5000$). The customer gives you his/her account number, he/she has a beginning of the month balance, the program should total all the purchases by the customer for the month, total any … |
| | I am having problems persisting a ManyToMany relationship using Toplink and entity objects created automaticaly by Netbeans. I have attached the relevant entity objects as Data.zip. My problem is this: Chapter and Strand have a ManyToMany relationship as you can see in the entity objects. A strand contains multiple chapters … |
| | I am trying to read a textfield. I am using the string=textfield.getText() notion, but all I get a is a blank string back. I am using netbeans and I am using the gui designer within it. I want to hit the "create grid" button and have it create a grid … |
| | Hi im writing a program using arrays but im not sure what to do. I think i have the first three methods done correctly but i cant figure out how to do the rest. Im also supposed to write an application file but im not sure how to with arrays. … |
| | hello can you help me i want to make my program to executable file is there a software for this to create a jar file?...hoping for your positive responds...  |
| | Hi, I'm having problems with decryption of a string when it's long. The following are my codes for encryption and decryption. It works well when the string is short (20 chars) but throws an exception when it is about 30 chars. The problem I have is that when I tested … |
| | Hello, I have got two arrays one called NB(number of memory blocks) and the other called NJ(number of Jobs). I want the NB arrays to search through the jobs and find a job that is <= to the block. So for example if i had: [B]Blocks[/B] 800 300 750 200 … |
| | I compiling with Solaris 10 SPARC, jdk 1.6 from Sun, Ant 1.7.1 from OpenCSW. I have no problem running hadoop 0.17.2.1 However, I have problem compiling/integrating hive with the error 'cannot find symbol', although I followed the tutorial. I have the hive source code from SVN exactly from tutorial. How … |
| | I need help with this program write a payroll class that uses the following arrays as fields: *employeeID.- an array of seven integers to hold employee identification numbers. The array should be initialized with the following numbers: 5658845 4520125 7895122 8777541 8451277 1302850 7580489 *hours.- An array of seven integers … |
| | Im trying to run some codes i found of JDom for a home work (super hard to find good material) any way. I was trying to run it on NetBeans and I dont have the library " org.jdom " Anyone, can please give me the right link to download this …  |
| | as a undergrad student i am thinking of making a mobile application online traffic system and informer using java specially for nokia mobile devices i have almost finished developing its algorithm and some design works are on progress but i am really stuck and confused about which ide should i … |
| | Hey all, I'm getting a bit confused.. I want to be able to create a pin number, but I want to to be scored out like this (****)... How can I do this?? Additionally I want to add different language setting options, how can I do this too?? Thank you … |
| | hi, im quite new to java, and i've been trying to understand this code, but i have no clue about the red parts. does anyone have any idea of what the red parts of this code do? [CODE] import java.io.*; public class BWTEncode { public static void main(String args[]) { … |
| | Hey guys! This is a relativity simple program. It compiles fine but when I try to execute there is a problem. Any insight or advise would be greatly appreciated. Thank you import java.util.Scanner; public class Power { public static void main( String[] args ) { Scanner input = new Scanner( … |
| | Hey again guys, I've been stressing over this problem for the past few hours now, and cannot figure out why it's doing what it's doing. I'm rather new to java...but here we go :) I currently have a slideshow class -and here it is. Sorry if it's sloppily written code...but … |
| | Hi, can anyone direct me to a good tutorials on drawing in java. i.e i want to draw car and allow it to move horizontally inside a lane. or draw a person and move him vertically or horizontally using keyboard keys. any example codes or tutorials will do. |
| | did anyone here know how to draw a exponential graph in java netbean?what link should i refer? |
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