35,618 Topics
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| | Hello. I am just starting java and I was woundering if anyone could help me with 2 things. I was woundering how to put my program into a loop so it just keeps going and how to make the circles transparent. Here is the program. Thank you very much if … |
| | Hi all, Im having trouble understanding the two sorting method. How do you find the number of comparison made by merge sort and quicksort? isit using the O(nlogn)?? What is it supposed to mean by " sort, by hand, the folllowing array... using a)merge sort b)quicksort Thanks |
| | i'm a realy newbie stil only been taking this course for a few months. i have a problem with 2 things in the folowing codes and im gona ask ure help with them . they are semi english since im in europe and these are codes the teachers used as … |
 | I have a binary tree which I would like to get printed out inorder. Right now I have this recursice loop: [code] public void inorder() { if(leftChild != null ) leftChild.inorder(); System.out.print(" " + data); if(rightChild != null ) rightChild.inorder(); } [/code] This get the right order printed. The problem …  |
| | hi so i have just joined today but if i had known about this site i would have joined much sooner, i asked if anyone could help me with how i should post in the intro but dont wanna wait a day for a response so if i make any … |
| | can any1 suggest me how many modules should b desinged to develope a file splitter sw n wat shuld b they??? |
| | I'm making a web site and need limiting customers' access to the website of my application. I work under Apache Tomcat 6.0.18, postresql and of course i've put postgresql-8.3-603.jdbc4 in my lib file. My context Apache-Tomcat's name is "hotel", and my database's name is AMDB. I haven't a file sun-web.xml … |
| | I'm trying to make a symbol table, for a project. The project as a whole is a translator/compiler that translates an imaginary language into java. I have everything down except for the symbol table. I am currently using a Stack of Lists. The Lists are vectors of Strings so I …  |
| | I am trying to create a heap sort method using recursion but whenever one of my methods called maxHeapify is called, it would throw a StackOverflowError. I understand that this error will pop up whenever my application recurses too deeply but the problem is I don't see anything wrong with … |
 | Hello and Happy holidays to all. I am new here, so sorry to bother you. I'm working on a project for a class and have run into a bit of a snag. I have a method that reads integer values from a text file and stores them into an array … |
| | I have a button which opens up the file chooser. When a txt file is selected a Jframe appears with the data in. How do I change this, so the data displays in a JTable? Here is my current code package org.project; import java.util.*; import java.io.*; import javax.swing.*; public class … |
| | can someone help me how to make attempts in pin numbers...for like example,,if the user input three times of a wrong pin number,,then the program will exit..help me..this is not really my whole code... if (pinNum2== bank.arrAccount[2][0][0]){ String w = JOptionPane.showInputDialog("How much you want to withdraw?"); int withdrawAmount =Integer.parseInt(w); bank.withdrawCash(withdrawAmount); …  |
| | Hi all, Background: I am dealing with graphical objects on a canvas in which the user draws four lines and out of these four lines I get the top left corner, bottom right corner and figure out the width and height from these two points. Problem: I have completed this … |
| | Hello, I had to make this program and it is all working except it is not writting to the file. Can you help me out? Here is the code: [code] import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.io.*; /** * Program that allows user to select a meal. * Includes … |
| | Hi all, I want to retrieve selected item from listbox in a jsp page and send it to a servlet. I am not able to get selected value. Can u please tell me how to get selected value. In servlet i am trying to get the selected value by using …  |
| | Hi guys, This is me, novice programmer to Java. i have a very simple question. can i change Font of a Label? for example i have a label: Label l1 = new Label("Welcome To Java"); now what i want is to be able to change the text(Welcome to Java) to … |
| | Hi, I am writting code for a Jtable. Now in this Jtable I list file files based on different attributes, including CRC Hash. Now I have a table that has 6 columns. the data Model extends the Abstract data Model. In my data Model I have two particular methods for … |
| | Hi. I am working on a project where I convert postfix notation to infix and evaluateing it. This includes building an evaluations tree (binary tree). I get how to create nodes, but how do I get the whole tree? This is the code I have so far: [code=java] import java.util.*; … |
| | Hi, I need to show stars equal to the each number of an array. I think I need another for statement. I`ve tried, but in vain. I do not know which variables should be included in this for statement ?? the output should be : 0|****(4) 1|**(2) 2|*********(9) and so … |
| | Hi. I currently have set up a GUI to have buttons on, linking to all my other classes. I am wondering how I would put the date and time at the bottom of the JFrame/JPanel. How would I do this, and will I put it within my GUI class, or … |
| | Hi,I need to edit in a file without deleting all the data. Thanks  |
| | I currently have an Oracle database, a Java Program, and a text file. Text files are being read by the system, which automatically updates the database. How would I make a JTable to make the database be displayed nicely in a JFrame? |
| | I am working on a program to calculate mileage, fuel cost, and travel time when the user selects a vehicle from a combo box. It works well when reading from an array that I put in the program. But now I have to have it read the starting figures from … |
| | How can i Import contact using javascript in jsp. Regards, sm3128 |
| | Hi, I have a trouble: I want to send text from my laptop to Nokia N95 using bluetooth tecnology. This is my source: [code=java] ClientSession clientSession = (ClientSession) Connector.open(serverURL); [b]HeaderSet hsConnectReply = clientSession.connect(null);[/b] if (hsConnectReply.getResponseCode() != ResponseCodes.OBEX_HTTP_OK) { System.out.println("Failed to connect"); return; } HeaderSet hsOperation = clientSession.createHeaderSet(); hsOperation.setHeader(HeaderSet.NAME, "Hello.txt"); hsOperation.setHeader(HeaderSet.TYPE, …  |
| | hello [CODE]os=sc.openOutputStream(); os.write("hello".getBytes()); os.close(); sc.close(); [/CODE] i used these to send message form mobile to pc but it not work from pc to phone [COLOR="Red"]i used BlueCove version 2.0.3 on winsock [/COLOR] TNX |
| | Hi Frnds, Sorry For The Spam . i have a class name"Super" program:[code] package turn; public class Super { public static String platformFlag=null; public void parse() { platformFlag="Sekhar"; } public static void main(String args[]) { Super ob=new Super(); ob.parse(); } } ------------------------------------------------------------------------------- Now i have another class in the same … |
| | Hi, I am developing a Java application that uses a serial port to communicate. The communication part is working fine but if I close the serialport using the close method on the SerialPort object and then try to open it again using the open method on a CommPortIdentifier object I … |
| | I need to write a code that takes 5 students and takes a grade for each of them, using two quizzes (10 points each), one midterm (50 points) and one final (100 points), and then gives final grade. It has to use an array. I tried to do this code … |
| | I try using this code: [code]File wd = new File("/sx04a1/jakarta-tomcat-5/webapps/maltixa"); String sscp = "scp /sx04a1/jakarta-tomcat-5/webapps/maltixa/index.jsp [email]jipbekok@fff04.ff.ff.es:/sx04a1/jakarta-tomcat-5/webapps/maltixa/index5.jsp[/email]"; p = Runtime.getRuntime().exec(sscp,null,wd); try { p.waitFor(); } catch (InterruptedException e) { e.printStackTrace(); } out.println("Exit value: " + p.exitValue()); BufferedReader reader =new BufferedReader(new InputStreamReader(p.getInputStream())); String s = reader.readLine(); out.println("scp said [ " + s + … |
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