35,618 Topics
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| | how do we use barcode scanner scanned data in our java program .is there any class which can help me. |
| | Hello, My objective is to create a text file in an android file system. I have looked into the appropriate packages and methods for creating a file. But I am still looking for information about how to access the internal directory structure in order to create a file on an … |
| | Hello everyone, I'm an amateur programmer, and I am working on a program to help me practice my mental math. The essence of this program is that the user inputs an expression which will be the form of each question. Their goal is to solve those expressions as fast as …  |
| | hi all i want to create a pie chart but i get an excepion i will print the code and the exception i will be greatful for any help DefaultPieDataset pie1=new DefaultPieDataset(); pie1.setValue("Section 1", 46); pie1.setValue("Section 2", 56); pie1.setValue("Section 3", 43); pie1.setValue("Section 4", 11); JFreeChart chart=ChartFactory.createPieChart("Log ID chart", pie1, true, … |
| | Hello! i need to filter the searched data in the database sql and display it on the table. But i keep on getting tis error: java.lang.StringIndexOutOfBoundsException: String index out of range: 1 at java.lang.String.charAt(Unknown Source) at app.SearchByKey.SearchStudentNumber.SearchStudentRecordReader(SearchStudentNumber.java:38) at app.ui.ListOfStudents.updateSearchTable(ListOfStudents.java:159) at app.ui.ListOfStudents$3.keyReleased(ListOfStudents.java:105) at java.awt.Component.processKeyEvent(Unknown Source) at javax.swing.JComponent.processKeyEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) …  |
| | I have a question - how mwmory is allocated when any data structure is declared? Suppose I have declared a list as follows - List<Integer> lst = new ArrayList<Integer>(); How many bytes will be allocated for that variable or initially no memory will be allocated? Memory will be allocated when … |
 | I want to work on an antivirus software program. But, what should I know first to dig? |
 | hey i want to create two *buttons* namely** submit** and **update** button in one page,but i need to knw wheather both the actions of the button can be performed in the same page or in diffrent page,if it is to be performed in diffrent page,how do i do it??  |
| | My assaigment was: Suppose we are working for an online service that provides a bulletin board for its users. We would like to give our users the option of filtering out profanity. Suppose we consider the words cat, dog and llama to be profane. Write a program that reads a … |
| | Write Java program that generates the Fibonacci sequence in the child process. The number of the sequence will be provided in the command line. For example if 10 is provided, the fibonacci numbers less than 10 will be output by the child process. Because the parent and the child processes … |
 | Hi, Having some issues connecting to MS Access Database. I think its ot connecting to the database. Below are the source codes: import javax.swing.*; import java.awt.*; import java.awt.event.*; public class DB extends DBDriver implements ActionListener { JFrame f; JLabel Fname = new JLabel("First Name: "); JLabel Lname = new JLabel("Last … |
 | Hello everyone. I'm currently exploring Java's GUI and trying a lot of codes now. I found a game GUI source code on the net. This program uses images to properly run. I can run the program now but it only displays black screen. It already have the folder for the … |
| | I want to develop **JavaFX/Java AUTOMATIC CODE GENERATOR**. I need algorithm or sample program. If anyone can help please mail solution to <snip> *DaniWeb Rules include: Do not ask anyone (member or moderator) for help by email or private message* |
| | package guessinggame; import java.awt.FlowLayout; import java.awt.Color; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import javax.swing.JFrame; import javax.swing.JButton; import javax.swing.JLabel; import javax.swing.JTextField; //create class GuessingGame that extends to JFrame public class GuessingGame extends JFrame { public static void main(String args[]) { //define variables private JLabel instruction1JLabel; private JLabel instruction2JLabel; private JLabel instruction3JLabel; private JLabel … |
 | hi every one! i have 2 applications one on eclipse and the other on VS2010C++, so i want to send parameters from the java code to the other, i just konw how to execute the c++ code from the java code. what i want is this : send paramters from … |
| | Hey all! I am in college doing a speech on programming and one of my topics is to explain the difference between Java, C, and Objective C. I have been programming with Java for 3 years now and just started with C last month, but I don't know the differences …  |
| | Can anyone recommend me a good Data Structure and Algorithm book for java programmers? Possibly intended for game development, but not required to be. Thanks.  |
| | hi all i have log file with size over 45GB and more than 110 million lines and it is stored in server i want to read the file from the server and insert it to an oracle database in another server but it takes along time so is there is … |
 | this is my code, the only problem I'm facing is that the jseperator is not appearing! import java.awt.event.*; import java.util.*; import javax.swing.*; import java.awt.*; public class AdmForm extends JFrame{ Container con1= getContentPane(); Container con2=getContentPane(); JFrame f2= new JFrame(); JButton b1= new JButton("Click me!"); JSeparator sep= new JSeparator(SwingConstants.HORIZONTAL); AdmForm(){ setSize(300,300); setLayout(null); … |
| | We want to make a row of bricks that is X meter long. We have a number of small bricks (Y meter each) and big bricks (Z meter each). Return true if it is possible to make the X meter long row by using a combination of the two kinds … |
| | Hello daniweb community i'm new here and glad to join this amazing website. Well want I need to understand is how I learn to become a competent computer science major and learn to write code very well. I have always had a knack for this and I love it alot …  |
| | Hello, having a hard time using my Faculty class, where I have to initialize/createObject from my Education class to Faculty. I would like to use the constructors from the Education class, to be implemented to my Faculty class. Here is my attempt Here's my two codes. public class Education { … |
 | Please help to complete beginner in programming. I work with binary stack of 2 pictures and here is the plugin I use: import ij.*; import ij.plugin.filter.PlugInFilter; import ij.process.*; import java.awt.*; protected ImageStack stack; public int setup(String arg, ImagePlus imp) { stack =imp.getStack(); return DOES_8G+STACK_REQUIRED; } public void run(ImageProcessor ip) { … |
| | con = Connect.ConnectDB(); String sql = "insert into table1 (" +"StudentID," +"FirstName," +"LastName," +"Contact Number," +"E-mail address," +"CarNumber)" + "values("+txtid.getText()+ ",'"+txtname.getText()+"','"+txtlast.getText()+"','"+txtnumber.getText()+"','"+txtemail.getText()+"','"+txtcarno.getText()+"')" ; try{ pst = con.prepareStatement(sql); pst.execute(); JOptionPane.showMessageDialog(null, "Saved"); } catch(Exception e){ JOptionPane.showMessageDialog(null, e); } can any one help me with this? im getting syntax error in insert into statement …  |
| | I hava created one table with columns in html in which i had customername and some columns, now myrequirement is when i click on any customer name of the customerName column from my created table i want to get particular customer details in new jsp page plz help me,Thanks in … |
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| | I need help in building a binary tree and putting integers in it. I need to write an add method in my MyArrayBinaryTree class (that extends ArrayBinaryTree) that allows me to place the element to be added in the very next available slot in the array. I also need to … |
| | Hi Folks, I want to use windows authentication for java application for eaxmple: I have a application called ABC , now i want to apply windows authentication for this ABC appliation like when user hit the application URL the user should login automatically with out prompting any user name and … |
| | I am currently having difficulty in testing a condition if a certain button do not have a text on it. For example i have a button in an array named btn[] and a textview(JLabel) named "tv", if i execute this code, nothing happened. if(btn[1].getText().toString().isEmpty()){ tv.setText("Okay"); } i also tried these … |
| | I am supposed to get the first and the last word from a string that is input by a user but im not sure how. Any tips would be great! //Print the first word and last word from a string int index = inputString.indexOf(" "); String fistString = inputString.substring(0, index); … |
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