Group Members: Luca Ornstil, Monish Suresh, Christine Widden

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Report: Instability and Cyclomatic Complexity Calculations

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Main.java

Instability Calculation:

• The Main class depends on the following external classes:

  • Blackboard
  • WorkArea
  • Server
  • Thread

  Therefore, out = 4.

• No other classes depend on the Main class, so:

  • in = 0

  Instability of Main.java: 1.0

Cyclomatic Complexity Counts:

• Main() constructor:

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• main(String[] args):

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• actionPerformed(ActionEvent e):

  • Contains 3 if-else conditions to check which button was pressed (startMenuItem, stopMenuItem, configureMenuItem).
  • Cyclomatic Complexity = 4 (3 conditions + 1)

• startTracking():

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• stopTracking():

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• configureSettings():

  • No conditional logic or loops, just sequential logic for setting size and speed.
  • Cyclomatic Complexity = 1

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Blackboard.java

Instability Calculation:

• The Blackboard class does not depend on any external classes.

  • out = 0

• The Blackboard class is depended on by the following classes:

  • Main
  • Server
  • WorkArea

  Therefore, in = 3.

  Instability of Blackboard.java: 0.0

Cyclomatic Complexity Counts:

• Blackboard() constructor:

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• addClick(Point click):

  • Contains 1 if condition to check if tracking is active.
  • Cyclomatic Complexity = 2 (1 condition + 1)

• getClickPositions():

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• clearClicks():

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• getTransmissionSpeed():

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• setTransmissionSpeed(int speed):

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• isTracking():

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• startTracking():

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• stopTracking():

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

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Server.java

Instability Calculation:

• The Server class depends on the following external classes:

  • Blackboard
  • Timer
  • Socket
  • ObjectOutputStream

  Therefore, out = 4.

• The Server class is depended on by the Main class.

  • in = 1

  Instability of Server.java: 0.8

Cyclomatic Complexity Counts:

• Server(Blackboard blackboard) constructor:

  • Contains 1 try-catch block, which counts as a decision point.
  • Cyclomatic Complexity = 2 (1 condition + 1)

• run():

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• startTransmission():

  • Contains 1 if condition to check if data is already being transmitted and 1 condition inside the timer task.
  • Cyclomatic Complexity = 3 (2 conditions + 1)

• stopTransmission():

  • Contains 1 if condition to check if data is being transmitted and whether the timer is active.
  • Cyclomatic Complexity = 2 (1 condition + 1)

• sendClickData():

  • Contains 1 if condition to check if the click list is empty and 1 try-catch block.
  • Cyclomatic Complexity = 3 (2 conditions + 1)

• stopServer():

  • Contains 1 try-catch block and 1 if condition to close the socket.
  • Cyclomatic Complexity = 2 (1 condition + 1)

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WorkArea.java

Instability Calculation:

• The WorkArea class depends on the following external classes:

  • Blackboard
  • MouseListener

  Therefore, out = 2.

• The WorkArea class is depended on by the Main class.

  • in = 1

  Instability of WorkArea.java: 0.67

Cyclomatic Complexity Counts:

• WorkArea(Blackboard blackboard) constructor:

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• mouseReleased(MouseEvent e):

  • Contains 1 if condition to check if tracking is active.
  • Cyclomatic Complexity = 2 (1 condition + 1)

• mouseClicked(MouseEvent e):

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• mousePressed(MouseEvent e):

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• mouseEntered(MouseEvent e):

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1

• mouseExited(MouseEvent e):

  • No conditional logic or loops.
  • Cyclomatic Complexity = 1