35,618 Topics
 | |
| | I can add a new node if the head is empty, but I can't attach a new node. Instead I get a null pointer error. Can anyone see what I'm doing wrong. I think I've been staring at this for too long. EDIT: Forgot to say I'm adding the Nodes … |
| | Okay i need this quick please i am kind of stuck basically i have got to find the highest and lowest numbers out of four integers. Is there a function in java.math or do i need to make one using a loop maybe? |
| | I have the following GUI code but my JLabel for results doesn't work when either of the buttons are pushed [code] import java.awt.*; import java.awt.event.*; import javax.swing.*; public class TempConverterPanel extends JPanel { private JLabel input, results; private JButton output_f, output_c; private JTextField temp, fahrenheit, celsius; public TempConverterPanel() { setLayout … |
| | I need to make this program pass by reference. How can I do that? [CODE] import java.io.*; import java.util.*; public class Convert { static Scanner console = new Scanner(System.in); public static void main(String[] args) { int pounds; int lb; int oz; int totalOz; int lbs; int ozs; int totalOzs; //Calling … |
| | Hello, I'd like to create a function that accepts two objects and compares properties between them. Example [code=java]public boolean (obj1, obj2){ if obj1.property1 = obj2.property2 return true else return false } [/code] How can I do this? |
| | Hello All i have go to Jsp new so i have a big problem to compatible with it can u see me some open source program tp see it and know how u detect it so my minde still at asp.net and can't remove to jsp may be after read …  |
| | I'm trying to read in a text file character by character. However, when I try to read it in it using the readChar method in DataInputStream it gives me a IOException. Heres what I have so far [CODE] FileInputStream stream; try { // Open an input stream stream = new … |
| | Developing an applet , which queries information from database and displays. Database used is sqlite. Application Envi:: Application runs on the local machine and the database file is present locally. The application is run inside Web browser and not in the appletviewer. Due to security restrictions, applet doesn't allow application … |
 | Sorry to everyone, I figured this out just after I posted, But i do still have another question, For a certain operation I am required to use log's in determining a variable for example Var3=log(Var1/Var2)/log(8) but java doesnt seem to accept log. What is the appropriate way to use logarithm? … |
| | Can anyone tell me what this error may mean? I can't figure it out. "javascript.ISException unknown name"  |
| | I need a little help converting my GUI panel into JButtons instead of text for some parts [code] //Davina Moore //TempConverterPanel //November 6, 2008 import java.awt.*; import java.awt.event.*; import javax.swing.*; public class TempConverterPanel extends JPanel { private JLabel input, results_f, results_c; private JButton output; private JTextField fahrenheit, celsius; public TempConverterPanel() … |
| | Dear All, I've three questions. Kindly answer these. 1. Why we use enableEvents() method? 2. Can a GUI component handle its own events? If yes; then how? 3. Which technique/concept can be use to implement multiple inheritances in java?  |
| | Hi how are you all?hope fine I need quick help please, i'm a computer science student, in fourth year,and i should have a graduation project,the problem is i cannot find a good idea yet, so i need a quick help. i think a bout something in "java applet" ' but … |
| | |
| | Hello everyone. I wanted to know how I could create a simple time restriction variable. For example making private double hour; not go over 2:59. Basically I don't want someone to be able to input a number greater than :59 in a Jtextfield. I can do a time application, but … |
| | Hi, all.. Does anybody have experiencing on store the spoken word into database? For example, when the program hear the voice spoken by some person, the program can store the spoken word into the database? The database system use is MySQL. Anybody have any idea on it? |
| | I don't know how to word this very well, so please bear with me... Is there any way to get a java program to respond in different ways to the results of other programs? Like, if an integer in the other program (not written in Java) is greater than say, … |
| | I have a project where i am having to create a doubly link list of persons, with lastname, firstname, and id number. Basically, how do I implement my compareTo method in my add method of dbl list ??? thanks in advance. Here is my person class: [code=java] public class Person … |
| | I am using a for loop and i want to print anwer vertically with the number. but rite now i am getting the answer horizontally i also \n but no luck below is the code. public String getMultiStringInformation(int num, String str) throws RemoteException { String result = "\n"; for ( … |
| | I am building an apllication.In that i need to save a text typed in text area to a file.so when i open save dialog box and input a file name that is already present in the folder it prompts whether you want to replace the file or not.After answering "no" …  |
| | Fig.2.7: Inventory.java [code=java] // Inventory program import java.util.Arrays; import java.util.Comparator; import java.util.Scanner; import javax.swing.JOptionPane; public class Inventory { private static double totInventoryValue = 0; public static void main( String arg[] ){ product invProd[] = new product[3]; Scanner input = new Scanner( System.in ); for (int iter = 0; iter < …  |
| | please i am a final year student in one of the universities in UK and and i am developing a school portal for a secondary school as my final year project and the portal b/c of time i have narrowed to down the scope of the project to only handle … |
| | Hi. I am building an intranet directory to list all the websites in our organization. We have built the directory in JSP working with Oracle. Idea is to have by default the directory ordered alphabetically and grouped by the first letter of the site name, as an example: A Asia … |
| | how database can be created during runtime in java |
| | Hi i have been trying to write a code that takes a picture and gets the odd valued pixels and turns them red, and also get the even values pixels and make them brighter. I am stuck and any help would be appriciated. [CODE]/** * Decrypt.java * Starter file for … |
| | Hi, My project requires, auto suggest textbox in jsp where we retreve data from database(oracle) |
| | [code=java] public class GameOfLife implements GameInterface { private boolean[][] originalMap, // The initial cell configuration map, // The current cell configuration newMap; // The next generation configuration private GameGUI gui; private int generation = 0; private FileIO fileIO; // GameOfLife constructor public GameOfLife() { originalMap = new boolean[MAX_ROWS][MAX_COLS]; map = … |
| | im trying to time stamp this code to plot a graph base on different array size eg 100 0.454sec 1000 0.467sec etc but so far im only getting 0's no matter the array size and id also want to find out the amount of comparisons made before the search key … |
| | Is it possible to execute Perl code from java script? I have installed apache-tomcat for the same. In which folder should I paste the html file and the Perl file (uses cgi module) ?  |
| | hi my remove node is not working....can someone help me correct it // Polynomial.java public class Polynomial { private int degree; private Node head; public static Polynomial addPolys(Polynomial poly1, Polynomial poly2) { Polynomial polyRes = new Polynomial(); int power = (poly1.degree > poly2.degree) ? poly1.degree : poly2.degree; while (power >= … |
The End.