36,051 Topics
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| | I dont know whts wrong with the code... its in java..the error msg is shown while compilation i.e. class, interface , or enum exception.. plzz can anyone help me with this.. [CODE]import java.io.*; import java.security.*; import java.awt.*; import java.awt.event.*; import java.applet.*; public final class DiffieHellman extends java.applet.Applet implements ActionListener { …  |
| | hey all, I know this might seem like a basic question but we haven't really been taught it at university and I was getting curious. Once you've created your program and have all your relevant java classes/package and it has been compiled where do you find the .exe and how … |
| | [code=java] /*This is a small GUI application that I made for personal use. It allows you to enter the colors of the bands on a 4-band fixed resistor to calculate the resistance (and tolerance) of that particular resistor. Eventually, I will create a version that deals with 5-band and 6-band … |
| | Hi, Can some1 plz explain wht is the advantage of Inversion Of Control concept of Spring. I know that there is no need to instantiate in the class and the container will do it like [CODE] Hello h = new Hello(); [/CODE] The above need not be given and we … |
 | Can any one give a useful link to learn oracle report server and also how to connect it with java application.... Thank you. Require second question answer.... |
| | [code]"insert into invoice(sno,entrydate,invoicedate,companyname,party,station,purchase,avail,sale) " + values("+Integer.getInteger(head.getSerial().getText())+",to_date('"+head.getEntryDate().getText()+ "','dd/mm/yyyy')"+",to_date('"+head.getInvoicedate().getText()+ "','dd/mm/yyyy')"+",'"+head.getCompany().getSelectedItem()+"'"+"'"+head.getParty().getSelectedItem()+"','"+head.getStation().getSelectedItem()+"',"+Integer.getInteger(head.getPurchase().getText())+",1,"+Integer.getInteger(head.getSale().getText())+")"); [/code] SNO NOT NULL NUMBER(38) ENTRYDATE DATE INVOICEDATE DATE COMPANYNAME VARCHAR2(50) PARTY VARCHAR2(50) STATION VARCHAR2(50) PURCHASE NUMBER(10,2) AVAIL NUMBER(1) SALE NUMBER(10,2) Whats wrong in this query.... I am getting sqlException ....  |
 | hello, Am new to Java and i just installed jdk, but i failed to set the paths correctly since am missing some paths am supposed to edit as the procedure says, any one having an idea pliz help me, thanx |
| | A [B][I][U]concept[/U][/I][/B]:icon_rolleyes: has grown, may be it as wrong or right, that in Java [COLOR="Green"]if we do not take the help of [I]thread class[/I] or [I]runnable interface[/I] at all then also several threads get executed there[/COLOR]; If so how it happens with other languages where there is no concept of … |
 | I am trying to read a custom file extension When reading a string from the file it output the correct string, however when I attempt to read an int it does not output the correct int. Here is my code: [CODE] import java.awt.event.*; import java.awt.*; import java.io.BufferedReader; import java.io.FileInputStream; import … |
| | Hello everyone, I have some code to sort a random array of integers, although im getting an error whenever I try to run the method. It prints the input and then I get an error. The code is below and the error is below that. If anyone could help me …  |
| | Hi everybody! I am implementing my undergraduate thesis with subject "object extraction in a video shot". I haven't studying signal processing topic when i majored in computer science, so this subject is very strange to me. I knew this problem associates with image segmentation issue,thats all, maybe having else one … |
| | Original question:[url]http://forums.sun.com/thread.jspa?threadID=5323307[/url] [quote]So I would like to include a bean into the same project (as a separated library of course) that uses it, so the project would be self containing, and the bean's code would stay in syncron with the program's one, even if I move it to another computer. … |
| | When we define a new variable for frame it hold "null" value, but what it contain when we close that frame? |
| | This is code generated for my Algorithm Implementation's class. I was to create my own RSA public and private keys using modPow and modInverse and use that to implement a digital signature. That works great, not the problem here. For extra credit I am implementing a digital envelope that will … |
| | I'm new to java and having trouble. I need to take a class I wrote and write a test applet for it to see if it works. The applet is supposed to have a length label, an input for it, an width label, an input for it, a button to … |
| | Hi all, I searched this topic and found a couple of posts but I couldn't find what I am looking for. Here's the problem - I am trying to send an image to a client (browser in this case) over a socket. After the image is received I am trying … |
 | I am reading murach's book about jsp and servlets. He uses netbeans(I am using intellij idea) and I am at a point when he uses the META-INF folder that netbeans creates to save a context.xml file there that contains a Resource tag with information about a connection pool. The problem … |
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| | I have this key listener in my application, and it wont work. This is my first key listener in an application, however I have done a mouse listener in one before. Anyway here is my code: [CODE] import java.awt.Graphics; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import javax.swing.*; public class DropGame extends JPanel … |
| | hello, i have an educational compiler construction project that does not have to be hectic but a simple one using java to construct the compiler. It has to compile some of the set of java language, libraries, objects, and controls. it also requires all facets of a standalone compiler (parser …  |
| | hey can anyone help me out......... I am trying to connect 2 processes on a single computer using socket programming in java....how can i connect such 2 processes....pplllzzzz help me out |
| | [URL="http://sourceforge.net/projects/pmd/"]http://sourceforge.net/projects/pmd/[/URL] [QUOTE]PMD is a Java source code analyzer. It finds unused variables, empty catch blocks, unnecessary object creation, and so forth.[/QUOTE] I've been tasked to write customised rules to find the following: [LIST] [*]Instances where Double.ValueOf was used to parse a string to a double [*]Instances where Float.valueOf was used … |
| | im creating a website that deals with the monthly reminders (extracted from Oracle) for my members for a school project. Should I create a login page using JSP or servlets? I am unfamiliar in both the languages. Will I need to establish my connection for each page if I use …  |
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| | Hello. I am working on a little Java project and have gotten a little stuck. May I have a little help please? First the original class and then the test class code here. Thanks!! [CODE]public class PhoneBookEntry { private String name; private String number; PhoneBookEntry(String string, String string2 ){ } … |
| | hi all i have start working on java rmi currently.i using this tutorial to write my first java rmi program. [url]http://www.javacoffeebreak.com/articles/javarmi/javarmi.html[/url] i started the rmiregistry.then i compile server file and generate the stub file using rmic.Now when i am running the server using java command it is giving following exception …  |
| | Hi All, This is the first time I'm using Java to connect to my online MySQL database that is hosted by a separate web host. Following is the code in use: (I've removed the server url, username and pass for obvious reasons. They all work when I use them in … |
| | Hello. I am trying to make a program that has a menu. When you click play , it should (for now) output the text "In Game". It does that. However, it prints the text on a new JFrame. I would like it to print it on the same frame. How … |
| | I have seen in many servlets that doPost and doGet are declared public or protected. What is the purpose of declaring a doPost or doGet as protected? Thank you. |
| | Hi, I have got a problem which has left me banging my head against the wall. Anyways, here is my situation. I've got to scan for a directory continuously and as soon as I've got a CSV file in it. I need to process that CSV file and pass on … |
| | Hello, For some work I have to implement the selection sort algorithm on an array list, I dont really know how to do this. I have started off the code but I just need to actually implement the selection sort! This is proving to be the stumbling block. Here is … |
| | I've been trying to create a Hangman game in Java, and I have a string that looks like "_____" for a certain number of letters that they are supposed to represent. How would I replace just one of those, rather than all? I've heard that you can't replace an underscore … |
| | How to upload a photo in mysql database using Browse Button.that means i want to upload the photo in databse anywhere from hard disc using Brawse button.. please help me .. |
| | hello friends, I got a problem with an object array.I'll write a sample code for understand the problem.I declared an array of objects named item. [CODE]item[] itemAr = new item[100];[/CODE] And then I initialized some of them [CODE]itemAr[0]=****; itemAr[1]=****; itemAr[2]=****;[/CODE] I want to know that is there a way to … |
| | Im having trouble implementing my own ordered linked list from scratch. [CODE] public class LinkedList{ Node head,tail; public LinkedList(){ head=tail=null; } public LinkedList(Node node){ this.head=new Node(node.num); this.tail=new Node(node.num); } public static void main(String[] args){ LinkedList list=new LinkedList(); list.insert(new Node(7)); list.insert(new Node(3)); } public void insert(Node node){ if(head==null){ head=node; tail=node; } … |
| | Dear All, I have an application where I got few different sql queries that I would like to have an ACID properties. I have now setAutoCommit false. Where best to put commit and rollback statement? [CODE]try { [INDENT]dbconn = DriverManager.getConnection("jdbc:mysql://192.168.1.45:3306/***?"+"user=****&password=*****"); dbconn.setAutoCommit(false); stmt = dbconn.createStatement(); String selectQuery2 = "Select * from … |
| | I work on ubutnu 10.10 and have java installed on my machine ( jdk 1.6.0) cause when I type java -version on terminal ,it gives me the details.But when i try to open eclipse , it says no jre or jdk found etc, .Please help. |
 | Hey guys I need a little bit of help. I am writing a program that generates 100 random numbers and then stores then in an arrays (2, even and odd numbers) I need a little help with passing the array into the function and generating random numbers. What am I … |
| | Hi guys, I'm currently switching from mechanical engineering to Computer Programming analyst in September so I have a few months to learn how to do this.. What I want to do is make a Bot for a game.. The game is written in Java and I want to load it …  |
| | [code] import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import javax.swing.DefaultCellEditor; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.DefaultTableModel; public class main implements ItemListener { String[] a = {"one","two","three"}; String[] b = {"4","5","6"}; String[] c = {"7","8","9"}; String[] d = {"10","11","12"}; String[] e = {"13","14","15"}; JComboBox a1 = new JComboBox(a); JComboBox b1 … |
| | Im trying to make a calculator and I thought of using the ScriptEngine class to evaluate expressions. So I designed the following code: CalculatorFrame.java : [CODE] import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.lang.Math; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; public class CalculatorFrame extends JFrame { public CalculatorFrame() { setTitle("My Scientific Calculator"); … |
| | Hi everyone, I am new in Java programming. I want to know that how to check integer variable whether it is null or not. I have a situation I write a program that asks that how old are you. If a person accidentally press enter and does not put a … |
| | Hello, i'm here to ask you for some help, i have done several applications/games in different programing languages, most of them without planification. For example,i wrote a five-in-a-row game in C++ with A.I (simple heuristic functions) without making sketchs or things like that, i started programing just to see what … |
| | Hi everyone, I am using netbeans 6.8 version. I was trying to learn servlet by working around.So i created a html file ,in which i placed a form whose action is given as "login.java" which is a servlet file. But when i run the program and click on the button … |
| | when i click on a column on which editor is attached , the getselectedrow return -1 ...... I have also tried list selection listener but nothinhg work properly.... i dont think it need code.... Please help..... |
| | Hi The error I stated in the title appears when I try to run the following code in Eclipse. I have created the Table which is named as "Emp" in Microsoft SQL Server. I can't find the error I have done here, and I googled but nothing helped me.. Plz … |
| | Hi, I have problem deploying ear's in jboss application server. I have a ear, which has the this structure test.ear /META-INF /dependency jars When i deploy this application under non scoped isolation, it works fine but i want my application to be deployed in scoped isolation. The exception what i … |
| | Hey guys, i've been trying to clone pokemon in java but i've come across a very weird problem. [CODE]java.lang.VerifyError: (class: attribute/base/health/AbstractBaseHealth, method: <init> signature: ()V) Constructor must call super() or this() at actor.pokemon.AbstractPokemon.<init>(AbstractPokemon.java:44) at actor.pokemon.charmander.AbstractCharmander.<init>(AbstractCharmander.java:16) at actor.pokemon.charmander.ConcreteCharmander.<init>(ConcreteCharmander.java:11) at main.Main.<clinit>(Main.java:17) Could not find the main class: main.Main. Program will exit. Exception … |
| | Hi! I am having problems with my login form. So I created a database for my login form so that i can create multiple user. That works fine but when I try to log in the user created an error shows: Error: [CODE] java.sql.SQLException: No row count was produced at … |
| | I am confused with the optimized quick sort little help please [CODE] public static void quickSort(int []A,int p,int q){ while(p<=q) { int r = partition(A, p,q); quickSort(A, p, r); quickSort(A, r+1, q); } } static int partition(int []A, int p, int q) { int a=A[p]; int lp=p-1; int rp=q+1; while(A[rp]<a) … |
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