A B C D E F G H I J L M N O P R S T U V W

A

about() - Method in class jutil.AppModel

Override in subcclasses

about() - Method in class jutil.Console

Prints information about the console. This method may be overriden in subclasses to provide application-specific information, where super.about can be called.

actionPerformed(ActionEvent) - Method in class jutil.AppWindow

Dispatches menu selections to item handlers.

add(WorkerThread) - Method in class jutil.ThreadManager

Add a worker thread to the pool.

AppError - Exception in jutil

Base class for all application-specific errors.

AppError(String) - Constructor for exception jutil.AppError

AppError() - Constructor for exception jutil.AppError

AppModel - Class in jutil

base class for GUI framework models

AppModel() - Constructor for class jutil.AppModel

AppWindow - Class in jutil

Base class for the main application window for the GUI framework.

AppWindow(AppModel) - Constructor for class jutil.AppWindow

AppWindow() - Constructor for class jutil.AppWindow

B

BinaryHeap - Class in jutil

A binary heap is a complete binary tree except possibly for the bottom level.

BinaryHeap(int) - Constructor for class jutil.BinaryHeap

Initializes capacity to 2^exp.

BinaryHeap() - Constructor for class jutil.BinaryHeap

Initializes capacity to 2^8 = 512.

C

capacity - Variable in class jutil.BinaryHeap

The capacity of the heap is a power of 2.

clear() - Method in class jutil.BinaryHeap

Sets elems[i] to null for each i.

clear() - Method in interface jutil.PriorityQueue

Removes all elements from the queue.

clear() - Method in class jutil.ThreadManager

clear workers list.

clock - Variable in class jutil.Simulator

The simulated time.

close() - Method in class jutil.Correspondent

Closes sock without throwing an exception.

Command - Interface in jutil

Command implementations should be declared as inner classes of the CommandConsole extension.

CommandConsole - Class in jutil

Extends Console by adding a map for storing command objects.

CommandConsole(Serializable) - Constructor for class jutil.CommandConsole

Initializes model reference in Command class.

CommandConsole() - Constructor for class jutil.CommandConsole

Initializes model to null.

commands - Variable in class jutil.CommandConsole

Stores command objects indexed by name.

compareTo(Object) - Method in class jutil.Event

this is less than other if this.fireTime is before other.fireTime.

Console - Class in jutil

Console is the base class for console user interfaces (CUIs). It provides a simple user interface, a simplified Model-View architecture, an interface to secondary memory, an extensible help facility, and an extensible error handling strategy.

Console(Serializable) - Constructor for class jutil.Console

Console() - Constructor for class jutil.Console

controlLoop() - Method in class jutil.Console

Perpetually: Prompts user for a command Reads command Executes application-independent commands Passes application-dependent commands to execute displays result

controlLoop() - Method in class jutil.SimpleClient

Driver for console user interface.

Correspondent - Class in jutil

Base class for all objects that want to communicate using a socket.

Correspondent() - Constructor for class jutil.Correspondent

This constructor does not initialize any fields.

Correspondent(Socket) - Constructor for class jutil.Correspondent

Initializes all fields.

currentDirectory - Variable in class jutil.AppWindow

Saves model to this file

D

debug - Variable in class jutil.Simulator

Set to true to see the clock and event queue after each event is fired.

DEBUG - Variable in class jutil.WorkerThread

Set to true to see diagnostics

deleteMin() - Method in class jutil.BinaryHeap

Removes and returns the smallest element.

deleteMin() - Method in interface jutil.PriorityQueue

Removes and returns the highest priority element.

E

elems - Variable in class jutil.BinaryHeap

The children of elems[i] are stored in elems[2i] and elems[2i + 1], the root (= min) is in elems[1].

EmptyQueueException - Exception in jutil

EmptyQueueException() - Constructor for exception jutil.EmptyQueueException

error(String) - Method in class jutil.AppWindow

Displays an error message dialog.

error(String) - Static method in class jutil.IOUtils

Prints an error message to stderr.

Event - Class in jutil

Used by the Sim framework to represent events in a simulation.

Event(int) - Constructor for class jutil.Event

Initializes fireTime.

Event() - Constructor for class jutil.Event

Sets fire time to 0.

events - Variable in class jutil.Simulator

Scheduled events are placed in this queue in order of their firing times.

execute(String) - Method in interface jutil.Command

execute(String) - Method in class jutil.Console

This method executes application-specific commands and must be implemented by subclasses.

F

fileMenu - Variable in class jutil.AppWindow

fileName - Variable in class jutil.AppModel

Store model in this file

fire() - Method in class jutil.Event

Override this method in subclasses.

fireTime - Variable in class jutil.Event

The time when this event will occur.

fname - Variable in class jutil.Console

Name of file where the model will be saved.

G

getCommand(String) - Method in class jutil.CommandConsole

A utility for fetching commands.

getFileName() - Method in class jutil.AppModel

getFireTime() - Method in class jutil.Event

getFname() - Method in class jutil.Console

A helper function that prompts the user for a file name.

getUnsavedChanges() - Method in class jutil.AppModel

getValue() - Method in class jutil.Semaphore

H

halt() - Method in class jutil.WorkerThread

Safely halt this thread.

haltAll() - Method in class jutil.ThreadManager

Safely halts all workers

handle(AppError) - Method in class jutil.Console

Handles all application-specific exceptions by printing an error message to stderr. This method may be overriden in subclasses to provide application-specific error handling strategies.

handle(Exception) - Method in class jutil.Simulator

Handles errors by terminating the simulation.

handleAbout() - Method in class jutil.AppWindow

Help/About handler.

handleExit() - Method in class jutil.AppWindow

File/Exit handler

handleHelp() - Method in class jutil.AppWindow

Help/Help handler.

handleNew() - Method in class jutil.AppWindow

File/New handler.

handleOpen() - Method in class jutil.AppWindow

File/Open handler.

handlerType - Variable in class jutil.Server

Subclass of RequestHandler to be used for incoming requests.

handleSave() - Method in class jutil.AppWindow

File/Save handler.

handleSaveAs() - Method in class jutil.AppWindow

File/Save_As handler.

help() - Method in class jutil.AppModel

Override in subcclasses

help() - Method in class jutil.Console

Displays help for application-independent commands. This method may be overriden in subclasses to provide application-specific help, where super.help can be called.

helpMenu - Variable in class jutil.AppWindow

I

id - Variable in class jutil.WorkerThread

This threads id number.

IDENTIFIER - Static variable in class jutil.Lex

This regular expression is matched by any alphanumeric sequence beginning with a letter.

initStreams() - Method in class jutil.Correspondent

initializes the reader and writer fields.

insert(Comparable) - Method in class jutil.BinaryHeap

Inserts element according to its natural order.

insert(Comparable) - Method in interface jutil.PriorityQueue

Inserts an element according to its priority.

IOUtils - Class in jutil

Utilities for console and file I/O.

IOUtils() - Constructor for class jutil.IOUtils

isEmpty() - Method in class jutil.BinaryHeap

Returns true if size is 0.

isEmpty() - Method in interface jutil.PriorityQueue

isLocked() - Method in class jutil.Lock

isPaused() - Method in class jutil.WorkerThread

isStopped() - Method in class jutil.WorkerThread

J

join(String, String) - Static method in class jutil.Lex

A utility for joining two patterns.

joinAll() - Method in class jutil.ThreadManager

Joins all workers.

joinAll(long) - Method in class jutil.ThreadManager

Join all workers until the stop or a timeout occurs.

jutil - package jutil

L

Lex - Class in jutil

Lexical analysis utilities.

Lex() - Constructor for class jutil.Lex

listen() - Method in class jutil.Server

Perpetually listens for incoming client requests, the spawns a request handler slave to handle the request.

load() - Method in class jutil.Console

Loads a mnodel from a file. User will be prompted for a file name.

Lock - Class in jutil

The methods in this class are meant to mimic the indivisible swap and testAndSet instructions provided by most computers.

Lock(boolean) - Constructor for class jutil.Lock

Lock() - Constructor for class jutil.Lock

sets lock to false

lock() - Method in class jutil.Lock

sets lock to true without interruption.

locked - Variable in class jutil.Lock

if true, then lock is locked

M

main(String[]) - Static method in class jutil.AppWindow

test

main(String[]) - Static method in class jutil.Server

Users may specify the port and request handler subclass at the command line.

main(String[]) - Static method in class jutil.SimpleClient

Allows user to specify the server at the command line.

MainJFrame - Class in jutil

MainJFrame() - Constructor for class jutil.MainJFrame

MainJFrame.Terminator - Class in jutil

MainJFrame.Terminator() - Constructor for class jutil.MainJFrame.Terminator

makeHandler(Socket) - Method in class jutil.Server

Creates a request handler equipped with a socket connected to the client.

makeMenu(String, String[]) - Method in class jutil.AppWindow

Creates a JMenu named name containing items listed in the items array.

makeReader(String) - Static method in class jutil.IOUtils

A factory for turning file names into character input streams.

makeWriter(String) - Static method in class jutil.IOUtils

A factory for turning file names into character output streams.

maxValue - Variable in class jutil.Semaphore

max # of threads allowed to access some resource

menuBar - Variable in class jutil.AppWindow

model - Variable in class jutil.Console

Reference to the model. This is the component that encapsulates application data and logic.

myPort - Variable in class jutil.Server

The server's port.

mySocket - Variable in class jutil.Server

The server will listen for incoming requests on this socket.

N

nextID - Static variable in class jutil.WorkerThread

An ID generator.

NUMBER - Static variable in class jutil.Lex

This regular expression is matched by any sequence of digits possibly containing a decimal point.

O

OPERATOR - Static variable in class jutil.Lex

This regular expression is matched by common arithmetic operators.

OverflowException - Exception in jutil

This exception is thrown by static data structures when they are full.

OverflowException() - Constructor for exception jutil.OverflowException

P

pause - Variable in class jutil.WorkerThread

set to true to pause the thread

pause() - Method in class jutil.WorkerThread

Safely pause this thread

pauseAll() - Method in class jutil.ThreadManager

Safely pauses all workers.

percolateDown(int) - Method in class jutil.BinaryHeap

A helper method that repeatedly swaps a node with its smaller child until there are no smaller children.

print(PrintWriter, String) - Static method in class jutil.IOUtils

Prints a message to a character output stream without a newline.

print(String) - Static method in class jutil.IOUtils

Prints a message to stdout without a newline.

println(PrintWriter, String) - Static method in class jutil.IOUtils

Prints a message to a character output stream with a newline.

println(String) - Static method in class jutil.IOUtils

Prints a message to stdout with a newline.

PriorityQueue - Interface in jutil

A queue sorted by priority.

probe() - Method in class jutil.Semaphore

waits until value is positive, then decrements it

Profiler - Class in jutil

The class contains primitive utilities for profiling method calls.

Profiler() - Constructor for class jutil.Profiler

prompt - Variable in class jutil.Console

The prompt displayed by the control loop.

PUNCTUATION - Static variable in class jutil.Lex

This regular expression is matched by parenthesis, curly braces, braces, and the semicolon.

R

readLine(BufferedReader) - Static method in class jutil.IOUtils

Reads a line from a reader without throwing an exception.

readLine() - Static method in class jutil.IOUtils

Reads a line from stdin without throwing an exception.

receive() - Method in class jutil.Correspondent

Receives a message from server.

requestConnection(String, int) - Method in class jutil.Correspondent

Initializes sock and other fields by requesting a connection to a server.

RequestHandler - Class in jutil

Base class of all request handler slaves.

RequestHandler() - Constructor for class jutil.RequestHandler

This constructor does not initialize inherited fields.

RequestHandler(Socket) - Constructor for class jutil.RequestHandler

Initializes all fields using provided socket.

response(String) - Method in class jutil.RequestHandler

Override this method in a subclass.

run() - Method in class jutil.RequestHandler

Perpetually receives a message from the client, creates a response, then sends the response back to the client.

run() - Method in class jutil.Simulator

Repeatedly removes the next event from the event queue, updates the clock, and fires the event.

run() - Method in class jutil.WorkerThread

repeatedly calls the task method until the thread is stopped or the task method returns false.

S

save(boolean) - Method in class jutil.Console

Saves model to a file. If no file name has been specified yet, or if this method was called by the "save as" command, then the user will be prompted for a file name.

saveChanges() - Method in class jutil.AppWindow

Warns user of unsaved changes before quitting or opening a new model.

saveChanges() - Method in class jutil.Console

Prompts user to save model if there are unsaved changes.

scan(String, String) - Static method in class jutil.Lex

Breaks a string into a list of tokens.

schedule(Event) - Method in class jutil.Simulator

Adds events to the events queue.

Semaphore - Class in jutil

Semaphore(int) - Constructor for class jutil.Semaphore

Semaphore() - Constructor for class jutil.Semaphore

sets maxValue to 1

send(String) - Method in class jutil.Correspondent

Sends a message to the server.

seriousError(String) - Static method in class jutil.IOUtils

Prints an error message to stdout then terminates the application.

Server - Class in jutil

A simple reusable server.

Server() - Constructor for class jutil.Server

Initializes port to 5555.

Server(int) - Constructor for class jutil.Server

Initializes port, sets handlerType to RequestHandler.

Server(int, String) - Constructor for class jutil.Server

Initializes port and handler type.

setFileName(String) - Method in class jutil.AppModel

setSocket(Socket) - Method in class jutil.RequestHandler

Initialize all fields using the socket provided.

setUnsavedChanges(boolean) - Method in class jutil.AppModel

Call this each time the application data is modified.

signal() - Method in class jutil.Semaphore

increments value and notifies all waiters.

SimpleClient - Class in jutil

A command line interface to a remote server.

SimpleClient(String, int) - Constructor for class jutil.SimpleClient

Connects client to some server, initializes standard I/O streams.

SimpleClient(int) - Constructor for class jutil.SimpleClient

Connects client to server running on local host.

Simulator - Class in jutil

The Sim framework consists of the Simulator, Events, and priority queue.

Simulator(PriorityQueue) - Constructor for class jutil.Simulator

Simulator() - Constructor for class jutil.Simulator

Initializes event queue as a binary heap.

size - Variable in class jutil.BinaryHeap

The number of elements stored.

size() - Method in class jutil.BinaryHeap

Returns the size of the heap.

size() - Method in interface jutil.PriorityQueue

sock - Variable in class jutil.Correspondent

The socket for this correspondent

sockIn - Variable in class jutil.Correspondent

Connected to sock's output stream

sockOut - Variable in class jutil.Correspondent

Connected to sock's input stream

start(String) - Static method in class jutil.Profiler

Call this method just before the method call you want to time.

start() - Static method in class jutil.Profiler

same as start but with no message.

startAll() - Method in class jutil.ThreadManager

Start all workers.

startTime - Static variable in class jutil.Profiler

The timer

stderr - Variable in class jutil.Console

Standard error stream.

stderr - Static variable in class jutil.IOUtils

Represents standard error stream; default destination is console window unless redirected at the command line.

stderr - Variable in class jutil.SimpleClient

Standard error output (the console window)

stdin - Variable in class jutil.Console

Standard input stream.

stdin - Static variable in class jutil.IOUtils

Represents standard input stream; default source is keyboard unless redirected at the command line.

stdin - Variable in class jutil.SimpleClient

Standard input (the keyboard)

stdout - Variable in class jutil.Console

Standard output stream.

stdout - Static variable in class jutil.IOUtils

Represents standard output stream; default destination is console window unless redirected at the command line.

stdout - Variable in class jutil.SimpleClient

Standard output (the console window)

stop(String) - Static method in class jutil.Profiler

Call this method immediately after the method call.

stop() - Static method in class jutil.Profiler

Same as start with no message.

stop - Variable in class jutil.WorkerThread

set to true to stop the thread.

swap(Lock) - Method in class jutil.Lock

Swaps this locks state with the state of another lock without interruption.

T

task() - Method in class jutil.WorkerThread

Override this method with the basic thread task.

testAndSet() - Method in class jutil.Lock

sets lock to true without interruption

theModel - Variable in class jutil.AppWindow

The application model

ThreadManager - Class in jutil

The thread manager is an extensible class that safely manages a pool of worker threads.

ThreadManager() - Constructor for class jutil.ThreadManager

toArray() - Method in class jutil.BinaryHeap

Converts heap into a sorted array.

tokenize(String) - Static method in class jutil.IOUtils

Parses a string into a sequence of tokens.

toString() - Method in class jutil.BinaryHeap

Converts heap into a LISP-style string representation of a heap.

toString(int) - Method in class jutil.BinaryHeap

Recursively converts the heap rooted at element i into a LISP style string representation of a tree.

toString() - Method in class jutil.Event

toString() - Method in class jutil.ThreadManager

U

unlock() - Method in class jutil.Lock

Sets lock to false without interruption.

unpause() - Method in class jutil.WorkerThread

Safely unpause this thread.

unpauseAll() - Method in class jutil.ThreadManager

Safely unpauses all the workers.

unsavedChanges - Variable in class jutil.AppModel

Set to true when the model is updated.

unsavedChanges - Variable in class jutil.Console

This flag should be set to true each time the model is modified.

V

value - Variable in class jutil.Semaphore

# of threads currently allowed to access some resource

W

windowClosing(WindowEvent) - Method in class jutil.MainJFrame.Terminator

workers - Variable in class jutil.ThreadManager

The pool of worker threads to be managed.

WorkerThread - Class in jutil

Base class for all threads that need to be safely stopped, paused, and unpaused.

WorkerThread(String, int) - Constructor for class jutil.WorkerThread

WorkerThread(int) - Constructor for class jutil.WorkerThread

WorkerThread(String) - Constructor for class jutil.WorkerThread

WorkerThread() - Constructor for class jutil.WorkerThread

A B C D E F G H I J L M N O P R S T U V W