36,051 Topics
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| | I am trying to make a program that determines whether a statement is true or false I have this so far:[CODE]public static void main(String[] args) { int w=2,x=3,y=4,z=5; boolean expression; expression = (w<=x)&&(z>=y); if(expression == true); System.out.println("true"); if(expression == false); System.out.println("false"); }[/CODE] ...but all it prints out is true and … |
| | HEy guys Have any one of u worked for an insurance company on java. I need to describe what u do in java for an insurance company. I need the description of the projects done for an insurance company in java. please make this quick,. This is emergency. Bye. thankx …  |
| | Okay so my loop is supposed to check if an item in the ArrayList has the MINIMUM_RATING value which is 1. It does that just fine, but the problem starts when there is more than one item with the MINIMUM_RATING value in it. I need it to stop at the … |
| | Hi all, I have created a UDP program, client and server. What i'm trying to do is, hash a string, save the hasded code and the message into a .txt file and send it over to the server. I have created the UDP program, MD5 hash codes and writing the … |
| | ive created an array list but every time i try and print the conents, instead of giving me a list it gives me the class name followed by @e41bc3 random numbers and letter. any ideas on how to print the contents? cheers |
| | i need a for loop to print out the numbers 1 2 4 8 16 32 64 128 256 512 any help? |
| | I have built a class with an array of cinemas. Im trying to return the values in the array or print them out so i can see what they are called. I've tried returning, system printing and a for each loop but it doesn't seem to be working. What is …  |
| | Could someone look at my Statement stmt? is this error due to improper string creation? Thanks [code] [/code] [code] public String stmtCreateStudentTable = "CREATE TABLE student (" + "stu_uid CHAR(11)," + "stu_password CHAR(11)," + "stu_lname CHAR(20)," + "stu_mname CHAR(20)," + "stu_fname CHAR(20)," + "stu_gender CHAR(1)," + "stu_age INT(3)," + "stu_start_date … |
| | Hello all. I've a question regarding using fractions as exponents. Not quite sure how to start this in Java. For example, let's say someone gives you an equation from an excel sheet as follows: [B](AxB)^1/3[/B] I'm assuming this means multiplying A*B then raising it to the power of 1/3 ([I]one … |
| | Hi all, I had posted my code and updated it a few times in another thread and didn't get any response and since I have gotten some things figured out and had posted my long code a few times in the other thread, I thought I would put my last … |
| | Hello, I'm working at a 8 puzzle ([url]http://www.permadi.com/java/puzzle8/[/url]) i want to compare two arrays. after that I want to get a true or a false and then I want to implement a algorithm. my question is: why can I not use 2 different variables and display the interger values of … |
| | can anyone write the code for the following algorithm. my mail is <EMAIL SNIPPED> Object list = [1,2,3...n], where n- number of tuples/records m- number of attributes Phase I The steps involved in this phase are detailed below: Step 1: Construct a dissimilarity matrix ‘d’ using the measurement in definition2. … |
| | i'm not quite sure this is the right forum to post this... please forgive me... i'm making a servlet it takes info from an html form and uploads it to a data base using jdbc that works just fine each time i run it, i get a console report that … |
| | Hello frnds. i have little bit confusion on this topic, i try to find over the internet but not able to do this, could you please help me, i want to know that whether Calender.getInstance() method is threadsafe or not. Thanks in advance  |
 | can someone pls tell me what is the damn error here?!! [CODE] package t6q6; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner input = new Scanner (System.in); System.out.println("Please enter your account number."); int account = input.nextInt(); System.out.println("Please enter P or R for Premium or Regular … |
| | Hi all, I am doing some swing game programming and I am at a bit of a loss right now as the AWT Event 0 thread ( I have system.out.printed its name) seems to be calling the same code twice, any ideas on this? I am overriding the paintComponent() of … |
| | Need java sample code of type object pattern Thanks |
| | Hi Looking for a way to pass back multiple data types from a method. I want to be able to pass back an array that the method fill out, and also the length of that array (I need that because the calling code will pass the byte array to the … |
| | Hi. At the moment I'm trying to get this very simple calculator to just set the label of the text in the GUI to just be the label value at the moment. I plan to make it do the math but I'm having trouble getting to that point. When I … |
| | I have a question. I need to write a program to display a button with an image on it using Swing. the Image on the button has to change when the button is clicked. I read somewhere about the image on button But is not sure how to change the …  |
| | Hey, this is a continuation of my image editing program, I am trying to perform intensity thresholding with an intelligent threshold. My code thus far: [CODE] private void thresholdMenuItemActionPerformed(java.awt.event.ActionEvent evt) { BufferedImage inputImage = getImage(); setUndoImage(inputImage); BufferedImage thresholdImage = new BufferedImage(inputImage.getWidth(), inputImage.getHeight(), inputImage.getType()); int threshold = 0; int tnew = … |
| | Hi people, I am new to Java but have experience programming in C/C++/C#. I wanted to learn Java SE 6 first before moving to Java EE 6. After making some research online for appropriate Java SE 6 books, I found that these are appropriate for me to get an excellent …  |
| | Hello everyone, After I created a JTable with: JTable MaTable =new JTable(); MaTable.setModel(new DefaultTableModel(new Object [N][1], new String [1])); I wanted to add new columns to it, so I did this: TableColumn Colonne = new TableColumn(); MaTable.addColumn(Colonne); The operation did worked, even the new columns displayed correctly, but, when I … |
| | i have button in javascript, when i click ,it calls a CGI perl script and returns a download popup to me. Prob--> When javascript calling the script it starts a new thread redirecting to perl script and end. So i m not getting any action or response inside javascript. What …  |
| | Hi, I may get more than 1000 lines in a file. Each line ends with a new line character. Sometimes the file may have 4 lines. Other lines will have characters such as , : alone. I'm storing each line in the database if it is a valid line and … |
| | How to check , whether jre is available on system or not by using javascript? |
| | I'm very new to Java, and I just have a few questions that I can't seem to clear up even with some research. What does it mean to override a method? Also what is the difference between a static and non-static method?  |
| | I am having problems getting my code to work properly. I cannot seem to get the results to print and get this error message "IsMemberMethod.java:59: isMember(int[]) in IsMemberMethod cannot be applied to () System.out.println(searchValue + ": " + isMember());", but I cannot seem to work around it. Also, not sure … |
| | [B]This is my code so far......[/B] [CODE] import java.applet.Applet; import java.awt.*; import javax.swing.JOptionPane; public class HelloWorld extends Applet { Font myFont = new Font ("Times Roman", Font.BOLD, 25); public void paint (Graphics g) { g.setFont (myFont); g.setColor (Color.BLUE); g.drawString ("My Name" , 20, 30); String first; first = JOptionPane.showInputDialog (null, …  |
| | I recently wrote some code from a code snippet from my java programming textbook as a way to pass the time, and since it works fine in console, I assumed that it will work fine in a GUI application. The code: [CODE] import java.net.*; import java.util.*; import java.io.*; import java.nio.*; …  |
| | I need help getting UI to work with my File System [CODE]import java.awt.*; import javax.swing.*; import javax.swing.JLabel; import javax.swing.JTextArea; import javax.swing.JTextField; import java.awt.event.ActionEvent; import java.awt.event.*; class UI extends JFrame implements ActionListener { private JButton format = new JButton("Format Disk"); private JButton mount = new JButton("Mount Volume"); private JButton createDIR = … |
| | Hi, I've gotten this program to work but I want to format it differently. I feel like I've tried everything to make the changes that I want but they just don't work. I think I may have the right idea on most of what I want to change but keep … |
| | Basically When i click b1 in the Pincode method i want the Balance(); method to run and display a JButton "2" but i want to clear the frame and panel first, so it looks as if its a new frame... Any help is much appreciated thanks! :) [CODE]import java.awt.*; import … |
| | Got a test coming up and I need some help understanding arrays....Below is the code I wrote to match the question which follows underneath that... [CODE]class Student{ String id;//this student's ID int midScore;//this student's midterm score int finalScore;//this student's final score public Student(String id){ this.id = id; } public void … |
| | Hi! I'm having some problems with gridbaglayout trying to get functionality that maybe isn't even there. The problem is the following I have 3 Jpanels with differend contents. I want panel 1 to be displayed to the left of the screen filling the y-axis, panel 2 in the middle filling … |
| | Hi guys! I found a lot of my answers on this webbie, so I registered myself. I'm creating a java based quiz program. Now i'm running into a lot of problems trying to get stuff working. The problem i'm having now is the following: I have a class Question, and … |
| | Hi, I am trying to run some simple updates using java in Oracle(10g). I have a simple java program to do it. Running the code using Eclipse IDE. The strange thing about it is that the connection is fine. If I run a [B]select[/B] query, it works fine. However if … |
| | Hello everyone, I am developing an application which makes use of abstract classes. I am trying to create a switch statement, which I have placed in the abstract class as all the subclasses can use this. I would like to refer back to this statement in a scanner which is … |
| | Hi, I have just written a java program, but every time i compile it, I'm getting some errors that I am having trouble solving. This program is an object-oriented program. So if anyone could please help me, let me know and I will inbox you my work! thank you! :) |
| | Hi, What's the best way to round doubles as in currency? I also have this error that says: internal error, cannot instantiate paycheck(java.lang.string, double, double) at paycheck to (). If you need to see the codes, I can post them. Any help at all would be greatly appreciated! Thanks! |
| | Hey guys, Im having some problems with an exercise that I need to complete with the use of inheritance - In the exercise I am concerned with two Classes (Cupboard and Safe). The cupboard can be opened and closed and tested to see if it is open or not. A … |
| | hello Is this String from my properties sheet able to become a prepared Statement. is the syntax compatable? [code][b]if the string from properties is i=0 for the array [/b] private boolean createTables(Connection conn) { for (int i = 0; i < schoolofdbTables.length; i++) { boolean bCreatedTables = false; PreparedStatement ps … |
| | Hi, in a "contact us" page named contact.htm that has some input textboxes, a submit button, and a reset button. When I fill out the fields and click Submit, it posts to an asp page that sends an email. What I want to do is to clear out the input … |
| | nevermind. it's 6:30 and i forgot to save the class file in the same place. :||||||||||| |
| | Hi there, I'm working on a small task to practice my (non-existing) java skills. I'm trying to write a program that reads a text file and replaces every character with a .wav file containing a musical note. A friend gave me some help, and with his help I made class … |
| | I am tryin to embed youtube in my webpage. I am a starter so i might be doing something wrong here. can any please help me on this. I have included the swobject. [code=html]<html> <script type="text/javascript" src="swfobject.js"></script> <div id="ytapiplayer"> You need Flash player 8+ and JavaScript enabled to view this … |
| | Hello .. i need ur help i have this problem .. i have this in a jsp page : [code]<jsp:useBean id="rdf" class="test_rdfa.NewClass"> </jsp:useBean> String id=(String)session.getAttribute("id"); String url= request.getParameter("wburl"); rdf.readGrddl(url,id); [/code] and this is the NewClass.java: [code] import com.hp.hpl.jena.grddl.GRDDLReader; import com.hp.hpl.jena.rdf.model.*; import java.io.*; public class NewClass { Model model = null; … |
| | hello there u said if any body need help u can help them so plz i need ur help with this i did a program in java gui (temperature converter) and i just need the program to print the result in a text file so plz plz plz help me … |
| | Hey all - I have created an ArrayList as follows: [code]ArrayList<Object> arList = new ArrayList<Object>();[/code] The arraylist contains the following - every time it will have the same data ... either filled or considered ""; String - transaction type String - name String - ssn String - address int - … |
 | Beginner in Java. I am trying to find the highest value and lowest value of an array. The highest value works perfectly fine, while the lowest value keeps on giving me 0, even though 0 is not part of the array. Below is the code. Thanks. [CODE] mxm = n … |
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