32,204 Topics
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| | hi everyone..... im doing an IDE as project..... my problem is when i press .(dot) a popup list must be shown...... i have done it but from the popup list i cant select an item.... the list popsup over a text area and its like the list is not at … |
| | ok everything works good outside if i make .java of the classes with a main app but when i put them together my Postfix one has a problem. if you are confused just look at the main method thats where the probelm arises. the thing is after i convert infix … |
| | here i have 2 files and im getting a wrong echlon form of the matrix...please help; Linear_Equation.java: package mypack; import java.io.*; public class Linear_Equation{ public static void main(String args[])throws IOException{ int i,j; matrix mat1=new matrix(); int mtx[][]=new int[3][4]; mat1.accept(); mat1.display(); mtx=mat1.echolonform(); System.out.println("\nThe answer is:"); for(i=0;i<3;i++) { System.out.println("\n"); for(j=0;j<4;j++) System.out.print(" "+ … |
| | Hi! I want to read a table from Access to Java. This is the table: [url]http://kepfeltoltes.hu/090221/heights_www.kepfeltoltes.hu_.jpg[/url] I tried to do it with HashMap, but I have a problem, and I don't even know what im doing is right, I have no practice in this, altough I've been trying to find … |
| | [code] public String preOrder(int nodeIndex) { if(nodeIndex>nodeArray.length) { return(null); } else if(nodeArray[nodeIndex].isLeaf(nodeArray.length-1)) { return(nodeArray[nodeIndex].toString()); } else { return(nodeArray[nodeIndex].toString()+" "+preOrder(nodeArray[nodeIndex].leftChild)+" "+preOrder(nodeArray[nodeIndex].rightChild)); } [/code] I am really stack with it. I dont how to output the numbers i input. If i input: 1 2 3 4 5 6, it only outputs 1 …  |
| | I have attached 4 classes which I have created for the following assignment, as well as a test program which tests the other four classes. The only thing that I am having a problem with is reporting the amount of the fine in the ParkingTicket class, as well as determining …  |
| | Hello, I am trying to write a simple program that takes input from the fields I have created for the following UI and writes them to a command prompt. Can someone help me with the next step.... getting the input entered and writing it to the prompt? I would also … |
| | i am trying to accept a 3 by 4 integer matrix from the user and an unable to do so.here is my code. [code] void accept()throws IOException { int i,j; InputStreamReader instream = new InputStreamReader(System.in); BufferedReader stdin = new BufferedReader(instream); System.out.println("\nEnter the coefficients and the constants for the 3 equations … |
| | hello, when compiling this method, i get a "missing return statement error" because there is no return statement after the while loop and before the method closes. i understand that there needs to be one there, i'm just not sure what the value should be. i have commented out the … |
| | If someone could help me out here I would really appreciate it... I have to get this code running for my programming class and i keep getting same symbol error here is the code: [code] public class fourseventeen { public void main(String[] args) { int j = 0; int sum … |
| | Ok, here is the problem. I have to ask a group of people for donations and get the total average and so on. The only problem I have is trying to get the lowest donation from the inputted numbers. I can't seem to get the actual lowest number. It just … |
| | Some of the time, we have to run/execute the SQL scripts using command prompt or the sql browser, but i were to replace these actions with just a single click of button, i need to create a functionality with java whereby users can perform these actions with an interface. But … |
| | Hi, Everything else in this code works properly but the keyTyped method is not working properly. I have been working on this for sometime. Any help would be appreciated. Also, any advice on getting my southPanel to appear when I start the application? It appears but only after I expand …  |
| | So, I got this idea that I could make a simple game in Java, with animated GIFs for the running animations, but I have a problem, although Java will display the animation on a JLabel when made into an Icon, but I don't know how to, and can't seem to … |
 | Hey guys, I wanna download a file to a certain directory on the computer. I have code that downloads to the same place where it's launched but I want it to download the files do another directory. (This isnt my code I found it on a tutorial) Here is the … |
| | i need help with converting celsius to fahrenheit and vice versa in my program. for example, if someone would input 0C for the first temperature and 32F for the second temperature, i need to convert one of these temperatures so that my equals method can recognize that they are equal … |
| | Hi, can someone please help me, I am new to Java and I am getting a NullPointerException error and cant figure out why Here is the code class TestBirthday { public static void main(String[]args) { int num; System.out.println("Enter number of people to test"); num = Console.readInt(); Birthday2 Experiment = new … |
| | Hey all I have to use an external library itext-1.4.5.jar in a program helloWorld.java.It is located in /usr/share/java First I had compiled as $javac -classpath /usr/share/java/itext-1.4.5.jar HelloWorld.java Then I had created a manifest file manifest.mf as Manifest-Version: 1.0 Created-By: PreetiC Main-Class: HelloWorld Class-Path: /usr/share/java/itext-1.4.5.jar But on doing $ jar cmf … |
| | Hello, this is my first post here and I noticed that other people have been struggling with this assignment too. It is the mortgage calculator program for UOP PRG420. So I am sure you all are probably about sick of this by now, but I need help. The book is …  |
| | Compared to javascript's power, i think xslt is so weak. i prefer parsing xml document to whatever html representation using javascript and i cant see any use of using xslt for that matter. What do you think? |
| | [ICODE]import java.util.Scanner; public class lab3 { public static void main(String[]args) { int floor; int rooms; int occupied; int totalRooms; int totalOccupied; int totalVacant; double occupancyRate; Scanner keyboard=new Scanner(System.in); System.out.println("Please enter the number of floors in the hotel: "); floor=keyboard.nextInt(); while(floor<1) { System.out.println("The number of floors cannot less than 1, please … |
| | Hey guys, I want to make a program copy output from a Command Prompt window, any idea how I can accomplish this? In my program I want to have a console type menu so the user can watch what is going on. Thanks PO |
| | Hi, I want to show running time in java Please write java code for me. thanks in advance.  |
| | Hi Guys, I am trying to get a program I made to auto-start on my computer, but I don't wanna use the "startup" folder. How do these other programs automatically start? I went to my "msconfig" and then to the startup tab and found references to "HKLM\SOFTWARE\Microsoft\Windows\CurrentVer..." and I looked … |
| | [code] package Sorting; import javax.swing.JOptionPane; public class Sorting2 { public static int s[] = new int[100]; public static void main(String[] args) { String ask = ""; for (int i = 0; i< 5;i++){ ask = JOptionPane.showInputDialog("Enter: "); s[i] = Integer.parseInt(ask); System.out.println(s[i]); } for (int x = s.length-1; x>= 0; x--) … |
| | Hi, How to add image to Jwindow. Here is my code: import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.text.*; import java.io.*; class Project4 extends JWindow { Container container; JTextField jt; JButton jb; public Project4(String st, final Image image) { container = getContentPane(); container.setLayout(new BorderLayout()); //JTextArea jtp = new JTextArea(st,10,10); //container.add(sp); …  |
| | Hi, I am developing an application to generated Jasper Report. I am using Netbeans 6.5, jasperReport 3.1.3. I am developing it using Visual web JSF. My JSP file is [CODE] D:/Programs/Java/JasperReports/EmployeeReport/web/Page1.jsp [/CODE] My report file is stored in [CODE] D:/Programs/Java/JasperReports/EmployeeReport/web/WEB-INF/reports/employeeReport.jrxml [/CODE] I have used following statement to specify my source …  |
| | hello. i have a problem running my very first applet (im just converting my previous application to applet). i tried to follow the instructions i found in the manuals, both the one given by my prof and the ones i found in the web, but unfortunately my program wont work. … |
| | Hello, I need to write a program that holds a multiple product inventory. Using an array to store the items. The output should display the product info, one at a time. In addition, I have to include the Total Value of the entire inventory. My only problem is, the total … |
 | Hi all, I would have a question. I know that I should (or must) respect the encapsulation rule (as one of the main three Java features) but what about if I have some "Data Structure"? I mean something like "struct" in C/C++. So if my class contains only data (not …  |
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