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Nokia TAS has fully featured application development capabilities. Include only those elements that are present in the set.
Use to represent an empty set. Method isEqualTo determines whether two sets are equal. Write a program to test class IntegerSet. Instantiate several IntegerSet objects. Test that all your methods work properly.
In the first case the constructor should receive three integer values. In the second case it should receive a String and two integer values. In the third case it should receive two integer values, the first of which represents the day number in the year. For example, if s1 and s2 are Strings, the method call s1. Call Us to get unique Solution.
Solution available with code EES. In this assignment, you will work on a real life research problem. Our network lab hosts the UK Satellite Simulator. We use it to simulate Internet traffic to small Pacific islands that are connected to the rest of the world via a satellite link. Once on the island side, each packet ends up at a machine there.
The simulated satellite link delays packets and occasionally throws some away when there are more packets arriving that it can deal with at the moment. When the link throws packets away, the source hosts respond by sending less data for a while before attempting to send more again.
On the island side of the satellite link, our simulator eavesdrops on the incoming packets. It stores summary information about each packet in a trace file. The trace file is plain text and each line contains the record for exactly one packet more on the file format in the next section. What we would like to be able to do is get a tabular display of how much data comes from a particular source host over time, or how much data goes to a particular destination host over the course of an experiment.
Experiments typically take between 90 seconds and about 11 minutes. This is where your assignment comes in: You are to build an application that displays this data in tabular form. The total size of a trace file can vary substantially depending on the number of hosts involved in an experiment and the length of the experiment.
On Canvas, there are two trace files for you to experiment with: a small one with lines, and a large one with lines. And yes you can edit them, too! The following shows a bunch of typical lines from the large trace file:. The lines here have been truncated to be able to accommodate them on the page, but they show all the data you will need. Each line consists of a number of fields separated by a single tab character.
Note that fields may be empty, in which case you get two successive tab characters. The first field on the left is just a sequential number for each packet that is added by the eavesdropping program.
The second field is a time stamp that is also added by the eavesdropping program. Each trace file starts with a time stamp of 0. The third field in each line is the IP address of the source host. IP addresses identify machines on the network and help routers forward packets between source and destination.
Each IP address consists of four decimal numbers between 0 and separated by dots full stops. The fifth field is the IP address of the destination host from the island network. You will need the third or the fifth field to populate the combo box depending on the status of the radio buttons. The fourth and the sixth field are the TCP ports on the hosts that the respective packets travel between. They identify the applications that have sent or would have received the packets, but are not relevant for your assignment.
Fields seven, eight and nine are packet sizes in bytes. The size in field seven is that of the whole Ethernet frame that contains the IP packet, and field nine is the TCP payload size the size of the content of the IP packet. There are also a number of additional fields: various flags, packet sequence and acknowledgment numbers, which are all irrelevant for your task. You only need to look at four fields: time stamp, source and destination IP addresses, and IP packet size.
Note that some packets are not IP packets, meaning that the IP packet size field can be empty. In all our GUI applications in the lectures, we have extended that JFrame by a dedicated subclass for the application. One exception is the JPanel that shows the data in tabular form.
It would be best to extend JPanel, so a more specialised subclass can take care of the table drawing. Start by placing all components visibly within the JFrame — you may wish to set the JPanel background colours to something a bit different so you can see where in the JFrame they end up being positioned.
Remember that a larger vertical position value puts the component further down in the frame. The JFrame has size by The JPanel subclass with the table is at 0, relative to the JPanel and is wide by tall. You can earn a total of 20 marks in this step:. Menu bar present, showing a File menu with the two required items: 4 marks. The two radio buttons are visible: 4 marks. The radio buttons are mutually exclusive and one is selected by default: 4 marks.
In order to get the marks for positioning, no components or labels must touch each other or overlap with other components i. Step 2: Extract the source and destination hosts from the trace file. First ensure that the combo box is invisible before you open the first trace file. Using the trace file selected by the JFileChooser, parse the file to extract the source and destination hosts. Check which radio button is active and show the respective set of hosts selected in the combo box.
Hint: There are a few little catches here:. It implements the Set interface, and for Strings, you can use it as follows:. If the string is already in the set, the add method does nothing. Some packets in the trace file are not IP packets and the entries for source and destination in the respective lines will be empty. You must skip these packets. Think regular expressions, perhaps. To do this, you need to figure out how to sort IP addresses in Java. This can be done in a number of ways. I use Collections.
Once you have accomplished this, ensure that the combo box updates every time you click the other radio button and every time you open a new trace file. Implement and add the necessary event handlers for the radio button. Implement the code required to where applicable fetch the list of hosts should you generate these lists once when you load the file, or each time the radio buttons change?
Implement the code required to wipe and re-populate the combo box. Ensure that you get the correct list of hosts in the combo box each time. You can earn a total of 30 marks in this step:. The combo box is invisible before the trace file is selected and opened: 3 marks.
The application shows some evidence of a trace file being opened and its contents being processed after one selects a file with the JFileChooser e. The combo box becomes visible at this point in time: 4 marks. The combo box contains a list of IP addresses: 4 marks. The list contains the selected type of host addresses The list updates correctly when a radio button is chosen: 4 marks.
The list updates correctly when we open a new trace file: 4 marks. We use coderunner questions to test the correctness of data retrieved from the trace file. You can earn a total of 10 marks in this step. Complete question 1 to question 5 in coderunner. Step 3: Compute and show tabular data. Implement the necessary code to:. Create a JTable and associated custom table model and add them to your custom JPanel.
Note: you would also need to use a scroll pane JScrollPane class to accommodate all table records. Compute the average number of bytes across all data rows. In order to fulfil the requirements of editable cells and other cell rendering requirements, you would need to create your own custom table model model in MVC , which can be performed by creating a subclass of AbstractTableModel class of the Java API.
You should then be able to link this custom table model to your JTable view in MVC by setting your custom model object as the table model for your JTable object. Use table cell rendering to improve the aesthetics of the table view. You can earn a total of 45 marks in this step:. The application shows a table of sorts: 3 marks.
The data table is actually correct as per the text file and corresponds to the host selected: 3 marks. The table updates correctly when a radio button is chosen: 2 marks. The IP address column name updates correctly when a radio button is chosen: 2 marks. The table updates correctly when an IP address is chosen: 2 marks. The table updates correctly when we open a new trace file: 3 marks.
The table shows all relevant column and row values i. There are two additional rows at the end of the table representing the Average and Total IP Packet Size for each table view: 6 marks. Solution Manual to the Econometrics of Campbell J.
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