35,618 Topics
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| | Help people hows it going? I need some help with a bubble sort algorithm, i basically have to use a bubble sort to look through a number of car registration numbers and put them into ascending order... Im just not quite sure how to get it done... I asked a …  |
| | HI,am new to the JSP forum page.Anyways,having created a database and posted there sample data,I want to proceed to creating my jsp pages in Eclipse IDE(Galileo).The database contains a login table that contains columns,employee_id,username and password.How can I do it,am a novice via jsp and servlets.Thanks in advace!!!!  |
| | I am try to form a multi thread in my program but its giving this error "\Java1.java:87: cannot find symbol symbol : class mythread2 location: class Multithreading Thread mythread1; mythread2 ^ \Java.java:88: mythread1 is already defined in Multithreading(java.lang.String) mythread1 = new Thread(this); ^ \Java.java:89: cannot find symbol symbol : variable …  |
| | i was doing my final year project.i need to do calculator.fuzzy calculator.in that calculator,the user will insert 4 numbers.that number should be transform into trapezoidal shape..but i don't know how to do it..from the number we insert into trapezoidal shape.somebody please help me... |
| | currently i have installed tomcat 6.0 latest version and jdk latest version , my problem is when i create separate directory structure to use servlet example i am getting error .::Error configuring application listener of class listeners.ContextListener.. what should i do, anything need to configure...my app structure like.. webapps start … |
| | I am trying to connect to Mysql from Jsp in Tomcat and I am getting Java.lang.NullPointer Exception. Please provide any help as soon as possible. I have set the web.xml and the server.xml properly. My web.xml contains: [code=xml]<description>MySQL Test App</description> <resource-ref> <description>DB Connection</description> <res-ref-name>jdbc/TestDB</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref>[/code] server.xml I have …  |
| | i want to send mail through from my website. i used the below code [CODE]String host="smtp.gmail.com", user="username", pass="password"; //host = smtp_server; //"smtp.gmail.com"; user = jsp_email; //"YourEmailId@gmail.com" // email id to send the emails //pass = jsp_email_pw; //Your gmail password String SSL_FACTORY ="javax.net.ssl.SSLSocketFactory"; String to = email;// out going email id … |
| | Im trying to get a java code for a website im making. I want to be able to submit files such as a small video to the website. What would be the java code for that? |
| | I am not sure how to explain the issue that I am having. I believe that I am successful with the exception of this part of the assignment and I have been working on this for hours and need help. This is what I am having trouble with:In the subclass, … |
| | Hi all, I have the following task; Extend an ArrayList of Integer by adding a method called 'sum', that returns the total sum of the elements of the list of integers. Such that each time the method is called sum up all the integers. So I started by making the … |
 | Hey guys, I am starting a project using eclipse team CVS the problem I am facing is when my team grabs a copy of my project it doesnt give them a referenced library. I have googled and cant figure out how to fix! thanks PO |
| | Hello All, Is there any way to completely test a Circular Queue Implementation?I have written an array based implementation and need to know if it works for all the cases.I was just wondering how to come up with exhaustive set of test cases to test the code instead of the … |
| | I have a JFrame with 2 Password Fields and 3 buttons, the following code was provided to me as a part of the actual GUI builder, but it places the focus on the second field rather than the first one. [CODE] frame.addWindowListener(new WindowAdapter() { public void windowActivated(WindowEvent e) { newContentPane.resetFocus(); … |
| | This is the class I created to make a MinHeap from data that is being inserted into it: [code]public class MinHeap { protected int [] a; protected int lastindx; public MinHeap() { lastindx = 0; // heap starts at a[1] a = new int[1]; } // is the heap empty? … |
| | My task is: The Captain Crunch decoder ring works by taking each letter in a string and adding 13 to it. For example, ’a’ becomes ’n’ and ’b’ becomes ’o’. The letters “wrap around” at the end, so ’z’ becomes ’m’. Write a method that takes a String and that … |
| | my assigment tell me to: Write a program to randomly generate a 3-digit number N (it is ok if the number has fewer than 3 digits). Create a number NN which is N placed next to it. Example, if the number N is 263 then NN is 263263. If N … |
| | java.io.FilePermission this exception always thrown when I am trying to run my code using tahiti server that i am developing java mobile agent |
| | the following code I want to press done buttone to close JFrame without exit the application ---------------------------------------------------------------------------------- [CODE] package examples.SecretaryAgent; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Display extends JFrame { private JCheckBox _first_Interval; private JCheckBox _second_Interval; private JButton _done_Button; public Display() { setLayout(new FlowLayout()); _first_Interval=new JCheckBox("First Interval"); _second_Interval=new … |
| | Hey guys, I am trying to read a skel file and create a skeleton from it, but I don't understand how to do the joint class. Here is what i have now: this is the main class. [code] public static void main(String[] args) { // Frame frame = new Frame("Simple …  |
| | [QUOTE=verruckt24;844577]To expand what JamesCherill says in one line, The Java Compiler would add a default constructor if you haven't defined it and if you haven't defined a parameterised constructor either. But the moment you declare and define a parameterised constructor (and then don't define a default constructor) Java assumes that …  |
| | hi all m not even able to run simplest hello program through java........it is giving a list of number of exceptions.i wrote following [QUOTE] public class hello{ public static void main(String args[]){ System.out.println("Hello"); } } [/QUOTE] Even the above is giving following exceptions classnotfound urlclassloader noclassdeffounderror loadclassinternal findclass etc. |
| | Hey guys, I've been trying to set this up for a while now and I'm getting something funny I just can't figure out. I've installed the jdk 6. I've changes the path and classpath. But when I go to the cmd its not finding it anywhere. I've new to java … |
| | Iam unable to run programs from command prompt, my environment variables are correct. When i type javac on command prompt ,it gives the correct data ie possible outputs. When i type java it again responds as it should. But if i run a program say: java practice then it gives … |
| | can somebody prove me the coding to update the database (mysql) with JSP |
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 | USING JAVA SWING I HAVE A JFRAME WITH TEXT FIELD WHICH I PASS THE USERNAME AS SOON AS I LOGIN. THE ISSUE I HAVE IS WHEN I NAVIGATE TO ANOTHER FRAME AND COME BACK AT A LATER TIME THE FIELD LOSES ITS VALUES I USED THE hide() and SETVISIBILE(TRUE) methods. …  |
 | Who here would prefer Java over PHP, or PHP over JAVA? If you prefer one over the other, for whatever reason or application, why? Specific code comparisons are appreciated |
| | I need to converted from seconds to hours, minutes and seconds. (without using if) and this is my code [CODE]import java.util.Scanner; public class SecondToHoursAndMin { public static void main (String[]ages) { Scanner in = new Scanner (System.in); int second; System.out.println("Enter the second: "); second = in.nextInt(); int hours,minutes,second1; hours=(second/3600); minutes=(second%60); … |
| | hi all i need a bubble sort algorithm in Java and make a class bubble_sort to sort any given array of any user defined type. can any of u give me a basic algoruthm i need to work with???? |
| | I am making a calendar planner applet. When the user clicks on a date it displays a menu of the different activities that can be performed. Then when the user makes their decision for the activity the calendar is displayed again this time with an updated icon for that date. … |
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