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30 Posted Topics
 | I'm making a paddle and ball game, a bit like pong but instead of another paddle im using the top of the frame, plan to make it into a football sort of game eventually with a bit of work, I have been able to add the ball to the frame …  |
| | Need some help, practising for an exam and need to make sure I have got this right as it has came up a number of times. Here is the information from a relational representation and I have drawn a ER diagram for this, can someone please tell me if I … |
| | I need to turn the attached ER diagram into a relational model. This is what I have came up with, is it going the right direction or away off? relation AB1relationship a1 : A1 b1 : B1 primary key a1 foreign key a1 references A foreign key b1 references B … |
| | Data dependence is a consequence of the way in which file-based processing is closely tied to the physical structure of the data stored in files. This causes unproductive maintenance where if a change is made to a file, a change must be made to the interface and all application programs … |
| | Please help before i go mad, i need to use the update in the main class to access the list in the footballadmin and then display each in a list box but i cant get it to work. [CODE]Imports Football Public Class FootballAdmin Private fTeam As List(Of FootballTeams) Public Sub … |
| | I have been playing about with some code tonight and trying to add things to it, so i know it wont make sense when talking about cats and dogs, females and males and music, I run this code and the GUI comes up I click add CD and the required … |
| | Can anyone explain what logical mobility is or direct me to a decent link to research from as im just finding pages with the word being used but no explanation to the meaning Thanks |
| | Hi, There is a small blogging system where a user posts small blogs and they are time stamped, if this system was expanded into a distributed environment the main issue I can for see is with so many people using the system then posts will go out off order, the … |
| | Hi I have been given a homework question asking to compare a made up Cipher along with know Ciphers, the cipher i have been given is called name cipher it takes the last letter of your first and second name and gives them a value and then adds them together …  |
| | [CODE]private void getPreviousButtonActionPerformed(java.awt.event.ActionEvent evt) { List<Tweet> listOfTweets = remoteBean.getMoreTweets(5); StringBuilder displayStringBuilder = new StringBuilder(); if(listOfTweets != null) { for (Tweet tweet : listOfTweet) { displayStringBuilder.append(tweet.toString() + "\n"); } textArea.setText(displayStringBuilder.toString()); } } [/CODE] As it stands when i run the code that this method is in and enter a number of … |
| | Hi, I am a bit confused, I have been given an address 132.132.0.0/16 and i have to devise a scheme allowing for at least 396 subnets. I think i have to extend the subnet mask to do this, I have worked through the different possible masks and the mask /25 … |
| | I have been doing a few exercises for an exam, they dont come with answers so just looking clarification, it asks to find the errors in the table and to explain each error which 2PL principles it violates. [ATTACH]21427[/ATTACH] I have came up with T4 at Step 14 cannot work …  |
| | As the title says i am trying to define RPC Calls, layers of software abstraction and serialization. I have came up with the following but confused at the last one, any help would be great Serialisation- Serialisation is the process of converting a data structure or object into a format …  |
| | Been asked to do some learning on how google works, to start I have been asked to research how google standard works in a client/server interaction? I have got as follows [B]The client is the web browser in this case, the user types in their search criteria and hit enter … |
| | Hi all, I have confused myself following a VLSM tutorial and need to get my understanding confirmed, would this be the correct format, or am i away off again 172.31.0.0 VLSM this network address for as many subnetworks as possible, with no more than 14 hosts in each subnetwork. Show …  |
| | Learning about Abstract classes and interfaces, is there anything else I have forgotten about? [B]Abstract Class[/B] 1.Cannot be initated. 2.Can have concrete methods. 3.Abstract methods with no body 4.A class extending the abstract class does not need to use all the abstract methods from the abstract class. 5.A class can … |
| | Can someone please explain break statements to me, as far as i understand a break statement leaves the loop before it has ended. But i run this code and expect to get "Zero" "One" But I get "Zero" "One" "One" "Unknown number" [CODE] for (int i = 0; i < …  |
| | Hi, Trying to get this bit of code to work so that a train goes up the track, leaves the track and then a train comes down the track, leaves and then a train comes up the track and so on. Only one train is allowed to go onto the … |
| | My understanding of this subject is - Two or more processes accessing a semaphore concurrently can cause Deadlock The provelms with semaphores is that you can forget to call the release method and it can cause deadlock Starvation Both processes can change the P and V counters of the semaphore … |
| | The network IP address allocated to a network administrator is 172.31.0.0/20. Which portion of the address is the network, which part is the host and which is the subnet mask? n = network s = subnet h = host nnnnnnnn.nnnnnnnn.nnnnssss.hhhhhhhh would that bet correct? |
| | Hi I have attached a copy of a round robin schedule I have produced, can someone check this is correct. Process Arrival time Service time 1 0 4 2 1 3 3 3 2 4 5 8 5 7 2 If any errors can someone advise where please |
| | Hi, I am bit stuck here, I have to have edit this code so that a train must wait in front of the tunnel lock for a train to come in the opposite direction to exit before it can enter the tunnel, i have to use java built in synchronisation … |
| | Just worked my way through a question involving a small network and tried to work out the addressing scheme for it, does this look right? Would anyone have used a different prefix for each group or does it look right, my maths is a bit rocky at times and just … |
| | Have written code for a game, a letter is randomly choosen by the programme and then the player has to pick the same one with the sequence getting longer and longer, the choosen letter is added to an arrayList for the game and then when the player picks a letter … |
| | What is a better way to write the code, [CODE] public void showFeelings(int howManyGoals) { switch (howManyGoals) { case 0: System.out.println("Oh dear, not very good"); break; case 1: System.out.println("Oh dear, not very good"); break; case 2: System.out.println("Oh dear, not very good"); break; case 3: System.out.println("Ive seen donkeys shoot better"); break; … |
| | [CODE] private JButton[] buttons; private static final Character firstChar = 'A'; private static final Character lastChar = 'D'; /** Creates a new instance of ButtonPanel */ public ButtonPanel() { buttons = new JButton[4]; setLayout(new GridLayout(2,2)); Character label = firstChar; for (JButton b: buttons) { b = new JButton("" + label); … |
| | Few questions on over riding. I am interiting a method openRead from another class, the method is to be overridden so that the scanner class uses the provided delimiter pattern, which is referenced. I need to make use of the scanner method. method from another class [CODE]public boolean openRead() throws … |
| | Hi, I have write a method to save amounts, the method has 1 argument which is where the amounts returned by a toString should be saved as text. I have no idea what to do and my searching on google or text books has been not helpful :( [CODE]public void … |
| | Hello all, I am writing a toString() i know how to do the basics off this but what im looking to know is how to put a line break between each set of information to get this public String toString() { return "ball pos:" + this.ball + "keeper pos:" + … |
| | I need help with this, im writing a league system and i need to order the teams by the points they have received max to min, im lost to where to begin any help would be good. [code] public class League { /* instance variables */ private Team name; private …  |
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