35,618 Topics
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 | how to do POS tagging in java netbeans7.0.1 applications?  |
 | This is my first program apart from the infamous "HelloWorld" one. The purpose of this program is to simulate a lottery number generator. The program is printing numbers which is great, but it isn't behaving like how it should. It's supposed to print 100 number combinations and it only prints … |
 | Hi to Dear Daniweb Members, The application populates data from database into JTable in Netbeans. It has 2 classes. First class retrieves all data from Employee table using Derby. Second class creates the GUI with a JTable component inside it. However i got the following messages. I am so confused. … |
| | Dear Daniweb Members, First of all sorry my english writing. I installed JavaJDK 7u13 with NetBeans 7.2.1 and db-derby-10.5.3.0-bin.zip on a fresh OS. Then i set the environment variables according to their relative paths as seen below. By using ij the test database and the test table created, records inserted … |
 | im having a little troubele with this problem. i am working on an intrest calculator and have hit a snag.its saying there is error with my Math.pow punction can someone help please. ill add what i have so far below import java.util.Scanner; public class Calculator { public static void main … |
| | Dear Daniweb Members, First of all sorry my english writing. I installed JavaJDK 7u13 with NetBeans 7.2.1 and db-derby-10.5.3.0-bin.zip on a fresh OS. Then i set the environment variables according to their relative paths as seen below. By using ij the test database and the test table created, records inserted … |
| | Hello, I'm trying to code a genetic algorithm in java but my code doesn't seem to be working as it should. I think the problem lies within my roulette wheel selection method. Can anyone spot it/point me in the right direction on how to solve it? private static Individual[] rouletteWheelSelection2(Individual[] …  |
| | i dont understant why its not going inside "error_01 or error_02" if statment? if user enter username and hit sumbit than it goes in "worked" if statment but if user dont enter any thing in usrname it still go in "worked" if statment. <!-- login form --> <form method ="POST" … |
| | i have project folder name: website_test package name: hello_servet testing_01.java web.xml index.html i need help with servlet name. i think iam names wrong. for ex is servlet-name the class name or project folder name?? web.xml file: <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <servlet> <servlet-name>website_test</servlet-name> <servlet-class>hello_servet.testing_01</servlet-class> … |
| | Hello, I am trying to learn how to use the JGrapht API and a sample program on the web has the following line on how to create a SimpleGraph: SimpleGraph graph = new SimpleGraph<String, DefaultEdge>(DefaultEdge.class); The above line is clear execpt for the "DefaultEdge.class" in the parenthesis. What's the significance … |
| | I have a string as [Ian Wood P. M. Visscher] [Ian Wood L. Mengersen] [Ian Wood] [P. M. Visscher Ian Wood].I want to write this string into two dimensional array. (i.e) String a[0][0]=Ian Wood ,a[0][1]=P. M. Visscher,a[1][0]=Ian Wood, a[1][1]=L. Mengersen and so on.Every time when I would give input, the …  |
 | I am working on a project that is suppost to work with 3 xml files. The program is suppost to ask which file you would like to import. It then makes a new folder in the current directory. The program is supposed to create a new file in the created … |
| | Hi all Just looking a creating a possible java or jsp based messenger for a web site. I have tested java based lan messengers, p2p messengers and even openfire+spark+smack instant messaging, XMPP (also called Jabber) which I admit I liked a great deal. They say dont try re-invent the wheel … |
 | Scanner input = new Scanner(System.in); System.out.println("Enter a value : "); String s3 = input.next(); System.out.println("Enter another value: " ); String s5 = input.next(); String s = ("1= add, 2 = subtract"); int op = Integer.parseInt(s); double result=0; switch (op) { case 1: result = addValues(s3, s5); break; case 2: result … |
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| | hi folks, im having a problem here on my code can't figure what's wrong.. so here's my code: import java.awt.*; import java.awt.Font.*; import java.awt.Color.*; import java.awt.Button.*; import java.awt.event.*; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.awt.event.WindowListener; import javax.swing.*; import javax.swing.JOptionPane; public class Calc extends JFrame implements ActionListener { JTextArea txtArea; static final … |
| | plz tel me how to write a jsp pgm to take values from mysql?plz help me  |
| | I was proposed a project that sounds like this. Consider a set of logical gates like AND, OR, XOR or NOT. Allow for building any logical circuit by connecting such gates. Provide input (0/1) to a number of gates and collect the results at the output of some of the … |
 | System.out.printf("\nRegular pay:$ %.2f",regularPay) System.out.printf("\nOvertime pay:$ %.2f",overtimePay) System.out.printf("\nTotal Pay:$ %.2f",overtimePay+regularPay); to print like /Regular Pay: $ Overtime Pay: $ ///Total Pay: $ ignore the '/' |
| | I have created my project using jsp,servlets.I have also used meta tag for deleting browser's cache. Once logout,the user should not be able to perform any function using back button.I dont want to disable back button.The user should be on logout page even if he presses back button. |
| | Sorry for the long code. Here it loops through a text file with up to 5 lines and reads a random line. If the line it reads is null then it generates a random response. However when compiled with a test file of 2 lines it only has an output … |
 | Write a Java program to do the following: A dairy farm sells organic brown eggs to local customers. They charge $3.25 for a dozen eggs, or 45 cents for individual eggs that are not part of a dozen. Write, compile, and test a Java class that prompts a user for …  |
 | This prompt scanner works outside of this program but when i integrate it, it doesn't work: All code work. just no together. Help would be much appreciated. Scanner in = null; Scanner key= new Scanner(System.in); System.out.print("Input file name: "); try { String filename = key.nextLine(); in = new Scanner(new File(filename)); … |
 | Uhh, hello. I just want to get a sample line of codes that displays the given string, insert a new element and deletes an old element. So far, this what I have done: import java.io.*; public class EmpLists { String employees[] = {"A", "B", "C", "D", "E" }; } class … |
 | import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class Calculator extends JFrame{ // Declare GUI components private JTextField jtfFirst; private JTextField jtfSecond; private JTextField jtfResult; private JLabel jlblFirst; private JLabel jlblSecond; private JLabel jlblResult; private JPanel entryPanel; private JPanel buttonPanel; private JButton jbtAdd; … |
| | I have done the following codes to create a bar chart with the data from DB, and save it as an JPEG file. I wanted to add percentage value anywhere in the table, JDBCCategoryDataset dataset = new JDBCCategoryDataset("", "oracle.jdbc.OracleDriver", "", ""); String query = "SELECT std,id from table"; dataset.executeQuery(query); JFreeChart …  |
| | Hello, When I run the project using my localhost, everything works fie. But when I use an other server I get this error: No suitable driver found for jbdc:mysql:// public void populateList2() { Connection con = null; Properties conProps = new Properties(); conProps.setProperty("user", "abn859"); conProps.setProperty("password", "100011399"); try { con = … |
| | pls help to under stand the java program |
| | well, this question maybe so silly, but i need to know.. i have to make an application with client-server system with java (client application for on android and server application for on PC) and i asked to make the class diagram for both in one class diagram (not seperately). so … |
| | Hi, Can anyone please help me out .I am trying out to send a mail using JAVAMAIL API, While executing the jsp code on server it is throwing few exception error. <%@ page import="java.io.*,java.util.*,javax.mail.*"%> <%@ page import="javax.mail.internet.*,javax.activation.*"%> <%@ page import="javax.servlet.http.*,javax.servlet.*" %> <% String result; // Recipient's email ID needs to … |
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