Msc Network System Presentation

1
Msc Network System Presentation

• Course Network Simulation (COMM3C)
• Name Bing LENG
• Title Java Network Programming

2
Achieved Specification

• Create a Java program to simulate the movement of
  an object within a defined area.
• There are two types of nodes four filed nodes
  and a single mobile node.
• Placed a number of nodes with the area of
  interest.
• All filed nodes in this program are identical.
• Communication between the filed nodes and mobile
  node is made via cable based network.
• The mobile node should move in an arc through the
  region of interest.
• Nodes can be measure the distance and position
  from node to the object.
• Load a list of node positions from a text file.
• Create a discrete event simulator and graphics
  systems to visualize the movement of mobile node
  through the region of interest.
• There are three control buttons start, stop and
  reset.
• Display estimated position in text format.
• Map background

3
The Proposed Solution

• There are four classes, jtee, Readfile, Resst,
  and oob.
• 1. Jtee It is the main class in this applet.
• 2. Readfile The purpose of the Readfile is to
  read the filed node position. eadfile includes
  two construct functions (Constructor
• Summary), Readfile (URL
  urla) and Readfile (String Stra). The
• advantage of Readfile
  is it can read the file in different positions,
• not only the local
  files, but also the long-distance URL files.
• 3. Resst Resst is thread class.
• 4. OOB class Realize ImageObserver interface.

4
The Proposed Solution continued

• The purpose of loading files is to get the X and
  Y coordinate of the four filed nodes.
• Draw graph on the panel is the control buttons.
• Set background picturedraw filed nodedraw
  mobile nodeother lines.
• The moving trace of the mobile node is carried
  out through assigning the angle value into
  yidong() in the cycle of thread.
• This method is not to draw a circle directly, but
  complete the circle by assigning a series of new
  value to the X and Y attributes in the cycle
  thread.
• http//osiris.sunderland.ac.uk/db2ble/java/jtee.h
  tml