32,199 Topics
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| | Hi i am facing a problem of passing data from a text file to array. i have read the text file but somehow i can't pass it into the array and it keep giving me nullPointerException. Can someone help? Is there something wrong with my code? And how do i … |
| | I am trying to populate a dropdown1 list with instructor names determined by the instructor id. is this code suffient? I have the binding write as far as I can tell but no string name population of the dropdown list. [code] private void buildInstrOptions(){ List<Teacher> teacherList=null; try{ Session session = … |
| | Hi i am a web developer i used to create site using php..i have little knowledge on java(only basic school level knowledge)..but now i want to develop software for one of the NGO which is working for helping blind students..that i have decided to build the software in JAVA...the system … |
| | need java program to copy the contents typed in client to server in same computer with different ports for both.  |
| | I try add this code(below) after "else if(token.equals("*"))" in PostfixEvaluator.java but it doesn't work like exponent. Can you help me to figure it out what is the right code for exponent. [CODE=java] else if(token.equals("^")) { val1 = Integer.parseInt(stack.pop().toString()); val2 = Integer.parseInt(stack.pop().toString()); result = val2 ^ val1; stack.push(new Integer(result)); } [/CODE] …  |
| | hello , I am facing a problem when i am trying to get the difference between two dates which is been taken from html page through datepicker. now i am selecting two different dates with different month.for example d1 dd/mm/yyyy = 12/09/2008 d2 dd/mm/yyyy = 2/10/2008 now i am getting … |
| | hi guys, how to distribute or relocate the swing components on the holding frame when window maximize button is pressed???? |
| | Hello there people! :D I am working with a lab, where we are supposed to finish a Memory Game. We are supposed to create a "Make Move" function, and that it behaves in a correct way. It is supposed to get the X,Y coordinates of where the user klicked, calculate … |
| | hello,,can you help me with my problem??if it's okey for you,,, right now,,we are required to make a calculator using only string..ex: i can only use the imports: JOptionPane/BufferedReader Input Mathematical String: 2 + (3*2) Output Result: 8 how can i implement the codes??our told us that we should make … |
| | I have a program i have been working on for my Java class and it is due by the end of this week. My problem is a few things...(1) I do not know how to set the actions on the buttons Save, Delete, Modify and Add. Also I was able … |
| | Hello. I am having a problem generating the prime numbers from user input. The problem lies in the factorize method. I think I am really close to getting this to work, but I cannot seem to figure out the last detail that I need to include. Can anyone help? Thank … |
| | I need to know how to keep password in cookies. |
| | hi its me again.. curious thingking about how to control a timer statements per clock tick processes with if else statement i would like to perform this operations like; clock.start(); if(clocktime == 1) System.out.println("Hi"); else if(clocktime == 2) System.out.println("Hellow"); clock.stop(); i know this program is an error because of incompatible … |
| | in this xml mapping file : [code] <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class dynamic-insert="false" dynamic-update="false" mutable="true" name="travel.Person" optimistic-lock="version" polymorphism="implicit" select-before-update="false" table="PERSON"> <id column="PERSONID" name="personId"> <generator class="increment"/> </id> <property column="NAME" name="name"/> <property column="JOBTITLE" name="jobTitle"/> <property column="FREQUENTFLYER" name="frequentFlyer"/> <set cascade="all-delete-orphan" inverse="true" lazy="true" name="trips" table="TRIP"> <key … |
| | Hi.. can we control a timer per second process..? i mean.. if i set a timer.setDelay in 1000 milliseconds.. then in the first second it will out "hi" and the second tick of the timer it will say "hello" and so forth... can u help me guys how to do … |
| | Hey all.. I have 3 classes in my program but Iam having trouble accesing a method in another class. Iam getting the error message cannot find symbol method printInfo(). Below is the code [code=cpp] class Book{ private String author; private String title; private int year; private Chapter first; private Chapter … |
| | i have confusion, like when we give Char var='A';how is it stored in memory???is its value dat is 65 stored in bits??if yes wat is the value of 'a' (smallcase)... the value of A-Z is 65-90, i have program which prints A-Z, [CODE]class chararray{ public void createArray(){ char[] s;//declaring array … |
 | I need to open a .txt file from a website. I tried this code: [CODE] int len = 0; FileReader fr = new FileReader("http://www.cinndev.com/testFile.txt"); BufferedReader br = new BufferedReader(fr); String str = ""; while ((str = br.readLine()) != null) { System.out.println(str); len++; }[/CODE] but the program froze on me. What …  |
| | I'm trying to step-up a simple servlet that processes a get action from a form. When I click on the submit button I get the message. [QUOTE] [B]HTTP Status 404 - /jhtp6/welcome1[/B] [B]type [/B]Status report [B]message[/B] /jhtp6/welcome1 [B]description[/B] The requested resource (/jhtp6/welcome1) is not available. [B]Apache Tomcat/5.0.25[/B] [/QUOTE] I also … |
| | Hi I am new to MYSQL DB and i am a fresher here i am having code which is perfectly run and the only thing is i have stored the data in file but now i want to stored the file in DB i mean i want to change file …  |
 | The program compiles but is not run right can somebody help plz? There are two parts a class and a main. [code=java] public class LinkedList56 { private class node{ int data; node next; } //create an empty linked list public LinkedList56(){ first = null; } //return true if the list … |
| | if anyone has it.. please put here |
| | Please could sum1 help me with this: I'm trying to read text from a file using the Scanner class and i'm not sure y its not throwing the FileNotFound Exception try { Scanner sc = new Scanner (new File ("Food.txt")); wordList[num] = sc.next(); while(sc.hasNext()) { wordList[num] = sc.next(); System.out.println(wordList[num]); num++; … |
| | Hibernate: select trips0_.PERSONID as PERSONID1_, trips0_.TRIPID as TRIPID1_, trips0_.TRIPID as TRIPID1_0_, trips0_.PERSONID as PERSONID1_0_, trips0_.DEPDATE as DEPDATE1_0_, trips0_.DEPCITY as DEPCITY1_0_, trips0_.DESTCITY as DESTCITY1_0_, trips0_.TRIPTYPEID as TRIPTYPEID1_0_ from TRIP trips0_ where trips0_.PERSONID=? I got this output(above) when I did a System.out on a List. Does this make sense to you. I … |
| | hai every one who can help me. i want to know some demo projects in java where we can find them. please help me giving some websites and how to search in google. thanks in advance one and all. |
| | Hi :) I was messing around with java applets just now, and I can't seem to figure out how to put more than one event handler in an applet. I'm just working on a really simple calculator. Three buttons, one to add, one to subtract and one to clear everything. … |
| | i would like to know wheather cookies handles passwords.if so where they contain. |
| | I was being troubled by the concept of abstract class.i can't understand that let us take an example abstact class "InputStream" .we can implement method read(byte[]) with it's reference. how does this method is being refferred by it's abstract class as there will be no instantiation to this abstact class. |
| | hi everyone, im trying to run a linux script in java where it ask the user to input a password,then when suucessfully executed it prompts the user to enter the same password for verification,how can i do this in java,im using trilead to remotely access and execute command,im having problem … |
| | here is the code.. but it is not working.. why? [code=java] import java.sql.*; public class Connect{ public static void main (String[] args){ Connection conn = null; try{ String userName ="testuser"; String password ="testpass"; String url = "jdbc:mysql:/localhost:3306/test"; Class.forName("com.mysql.jdbc.Driver").newInstance(); conn = DriverManager.getConnection (url,userName,password); System.out.println ("Database connection established"); } catch(Exception e){ System.err.println("Cannot …  |
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