new report.rtf

8/15/2019 new report.rtf

http://slidepdf.com/reader/full/new-reportrtf 1/109

TEXT EDITOR PLUS

Report submitted in partial fulfillment of the Requirement for the Diploma of

NATIONAL INSTITUTE OF ELECTRONICS AND INFOR ATION

TEC!NOLO"# $NIELIT%

&A LE'EL&

Submitted b() Submitted to)

DI'#A AR#A ****************

Re+ No, -./012

THE DELHI INSTITUTE OF COMPUTER SCIENCE

/3405 6est 7un8abi 9a+h5 Ne:Delhi*1;



CONTENTS

1. A<=no:led+ement

2. 7refa<e

3. Chapter /* Introdu<tion

odular des<ription of the 8ob

Features of Notepad

2, Chapter 1* S(stem requirements and Anal(is

Conte>t Dia+ram

Le?el*/ DFD

SRS of Notepad

3, Chapter 0* S(stem Desi+n

Desi+n of Notepad

Class dia+ram for Notepad

;, Chapter 2* S(stem De?elopment

Codin+

ain <lass for runnin+ the pro8e<t

6h( @A'A



Steps in Noteoad

B, Chapter 3* S(stem Testin+

Fun<tions of different menu items as stated in the s(stem

8. SOURCE CODE

9. Con<lusion

10. Future :or= and S<ope

11. Referen<es



ACKNOWLEGEMENT

On the ?er( outset of this report5 I :ould li=e to e>tend m(

sin<ere obli+ation to:ards all the persona+es :ho ha?e helped

me in this endea?our, I am ineffabl( indebted to

**************************** of DEL!I INSTITUTE OF CO 7UTER

SCIENCES5 7un8abi 9a+h5 for <ons<ientious +uidan<e and

en<oura+ement to a<<omplish this assi+nment,, 6ithout his

+uidan<e this pro8e<t :ould not ha?e materiali ed,

I :ould li=e to than= r, !E ES! S!AR A5 Dire<tor5

SA TRON S#STE 7?t, Ltd, for +i?in+ ne<essar( ad?i<es

and +uidan<e, I a<=no:led+e their <ontribution +ratefull(,

I also a<=no:led+e :ith deep sense of re?eren<e5 m(

+ratitude to:ards m( parents and members of famil(5 :ho

ha?e al:a(s supported me morall( as :ell as e<onomi<all(,Last but not the least5 +ratitude +oes to all of m( friends :ho

dire<tl( or indire<tl( helped me to <omplete this pro8e<t,



PREFACE

It +i?es me immense pleasure to present this

pro8e<t report on Notepad * a te>t editor 5 made in

Core @a?a, Notepad is a pro8e<t similar to that of

i<rosoft s notepad, In this notepad I ha?e +i?en as

man( features the user needs,

( spe<ial than=s to m( pro8e<t in<har+e5 m(

<olle+e tea<hers :ho ha?e al:a(s sho:n their faith

and <onfiden<e in me,



CHAPTER-1

INTRODUCTION OF

NOTEPAD



Notepad is a basi< 6indo:s utilit(, It is used for <reatin+

and4or editin+ unformatted te>t$,t>t% files, It has limitations5 but

it is surprisin+l( useful, Notepad strips all formattin+ from te>t

that is pasted on to it, 9oldfa<e5 itali<s all of it disappears and

(ou +et plain te>t instead, It <an be used on !T L <ode quite

ni<el(5 for e>ample, Li=e:ise5 if (ou ha?e a file of un=no:n

t(pe be<ause the e>tension has been deleted5 openin+ it in

notepad is a +ood :a( to ma=e sure that (ou do not s<re: it

up b( merel( openin+ it, That :a(5 (ou <an e>amine the

<ontents of file and possibl( fi+ure out :hat t(pe of file it

a<tuall( is, The file t(pe name <an be often found amon+st the

<ode at the be+innin+ or end of the file, This ?ersion of

notepad does not ha?e an( file si e limitation, The 6ord7ad

utilit( :as e?entuall( added to 6indo:s :ith the ad?anta+e of

ha?in+ more features and handlin+ lar+er files,



Notepad itself <an no: open and edit files of ?irtuall( an(

si e, If (ou :ant to ?ie: the sour<e file of an( :eb pa+e5

Internet e>plorer for e>ample :ill open notepad to sho: (ou the

sour<e, If (ou do not ha?e a te>t editor5 (ou <an use notepad

and print :hat (ou ha?e :ritten, If (ou :ant to :rite <ode for

!T L5 @A'ASCRI7T et<,5 notepad is ?er( useful, And I <ertainl(

ha?e noti<ed that :hile ta=in+ some online <ourses in other

=inds of s<ripts5 notepad is the editor of <hoi<e,

The :hole NOTE7AD is de?eloped usin+ @A'A usin+

8d= /,; and tested on 6INDO6S 75 'ISTA5 6INDO6SB

and 6INDO6S ,



FEATURES OF NOTEPAD

1· E?er( e?ent has Short<ut =e(s,

2· Line 6rap fun<tion,

3· Font Settin+,

4· No limit on file si e5 althou+h lar+e files ma( ta=e

time to load,

5· !T L files <an be made usin+ this te>t editor,

6· 7rintin+ fa<ilit(,

MODULAR DESCRIPTION OF THEJOB

Hardware and S !"ware Re#$%re&en"' ( 9efore startin+

an( ne: lan+ua+e :e must =no: :hat are its hard:are and

soft:are requirements, Also5 addin+ to our additional

=no:led+e5 :e :ere tau+ht about the installation pro<ess, So

this se<tion tells us about the !ard:are and Soft:are



requirements and installation of Core @A'A,

Hardware Re#$%re&en"'(

1· 13; 9 RA

S !"ware Re#$%re&enr'(

1· @DG /,;

O)era"%n* S+'"e& (

1· i<rosoft 6indo:s 74 'ista4 6indo:sB4 6indo:s

P,a'e' %n ",e Pr e."(

1· S(stem Requirements and Anal(sis

2· Desi+n 7hase

3· Codin+

4· Testin+



CHAPTER-/

S0STEM

RE IREMENTS AND

ANAL0SIS



C n"e2" D%a*ra&

Fi+ure*/) Conte>t Dia+ram or Le?el*. Data Flo: Dia+ram for

Notepad



SRS5S !"ware Re#$%re&en"' S)e.%!%.a"% n6 OF

NOTEPAD

1. In"r d$."% n1717 P$r) 'e

The Soft:are Requirements Spe<ifi<ation $SRS%

:ill pro?ide a detailed des<ription of the requirements

for the Notepad, This SRS :ill allo: for a <omplete

understandin+ of :hat is to be e>pe<ted of the

Notepad to be <onstru<ted, The <lear understandin+

of the Notepad and its fun<tionalit( :ill allo: for the

<orre<t soft:are to be de?eloped for the end user and

:ill be used for the de?elopment of the future sta+es

of the pro8e<t, This SRS :ill pro?ide the foundation

for the pro8e<t, From this SRS5 the Notepad <an be

desi+ned5 <onstru<ted5 and finall( tested,



This SRS :ill be used b( the soft:are en+ineers

<onstru<tin+ the Notepad and the end users, The

soft:are en+ineers :ill use the SRS to full( understand

the e>pe<tations of this Notepad to <onstru<t the

appropriate soft:are, The end users :ill be able to use

this SRS as a Htest to see if the soft:are en+ineers :ill

be <onstru<tin+ the s(stem to their e>pe<tations, If it is

not to their e>pe<tations the end users <an spe<if( ho: it

is not to their li=in+ and the soft:are en+ineers :ill

<han+e the SRS to fit the end users needs,

1.2 S. )e )

The soft:are produ<t to be produ<ed is a Notepad

:hi<h :ill be a te>t editor used for ?arious

operations, The first subs(stem is a File

s(stem used to <reate a ne: file5 edit a ne: or e>istin+

file and e>it from the te>t editor, The se<ond subs(stem is



s(stem

17; O3er3%ew (

The SRS is or+ani ed into t:o main se<tions, The first

is the o?erall des<ription and the se<ond is the Spe<ifi<

Requirements, The o?erall des<ription :ill des<ribe the

requirements of the ! S from a +eneral hi+h le?el

perspe<ti?e, The Spe<ifi< Requirements se<tion :ill

des<ribe in detail the requirements of the s(stem,

/7 T,e O3era44 De'.r%)"% n (

It des<ribes the +eneral fa<tors that affe<t the produ<t and

its requirements, This se<tion does not state spe<ifi<

requirements but it pro?ides a ba<=+round for those spe<ifi<

requirements and ma=es them easier to understand,

/71 Pr d$."Per')e."%3e (



The is an independent standJalone s(stem, It is

totall( self <ontained,

/7171 Hardware In"er!a.e'

The ! S :ill be pla<ed on 7C s throu+hout the

hostel,

/717/ S !"ware In"er!a.e'

The :hole NOTE7AD is made usin+ @A'A usin+

8d=/,;,

/7178 C &&$n%.a"% n In"er!a.e'

None

/717; Me& r+ C n'"ra%n"'

13; 9 :hi<h is required b( the 8d=,

/717< S%"e Ada)"a"% n Re#$%re&en" ,

The terminals at <lient site :ill ha?e to support the



1· Chan+es the font of the te>t,

2· Formattin+

3·Line :rappin+,

2.4 A''$&)"% n' and De)enden.%e'

None,

/7< A)) r"% n%n* ! re#$%re&en"'

Not required,

87 S)e.%!%. Re#$%re&en"'

This se<tion <ontains all the soft:are requirements at a le?el

of detail5 that :hen <ombined :ith the s(stem <onte>t

dia+ram5 use <ases5 and use <ase des<riptions5 is suffi<ient

to enable desi+ners to desi+n a s(stem to satisf( those

requirements5 and testers to test that the s(stem satisfies



those requirements,

3.1 E2"erna4 In"er!a.e'

The Notepad :ill use the standard input4 output de?i<es

for a personal <omputer, These in<lude the follo:in+ )

1· Ge(board

2· ouse

3· onitor

4· 7rinter$not mandator(%

3.2 F$n."% na4 Re#$%re&en"'

Fun<tional Requirements define the fundamental

a<tions that s(stem must perform, The fun<tional

requirements for the s(stem are di?ided into three main

<ate+ories5 student information s(stem5 room information

s(stem and billin+ se<tion, For further details5 refer to use



3. Se""%n*

3.1 The s(stem shall <han+e the font of the te>t to

the one spe<ified b( the user,

4. F r&a""%n*

4.1 The s(stem shall implement line :rappin+ :hen

spe<ified b( the user,

878 De'%*n C n'"ra%n"' ,

The Notepad shall be a stand*alone s(stem runnin+ in

a 6indo:s en?ironment or an( other operatin+ s(stem,

The s(stem shall be de?eloped usin+ Core @a?a,



CHAPTER-8

S0STEM DESIGN



• Ge(Listener

Ma%n .4a'' ! r r$nn%n* ",e )r e." (

<lass m(notepad

M

publi< stati< ?oid main$Strin+ s %

M

m(fr fPne: m(fr$QGani=a&s

NotepadQ% f,setSi e$2..52..%

f,set'isible$true%

f,setLo<ation$.5.%

U'a*e(



This <lass runs thepro8e<t and <alls the default <onstru<tor

of the &+!r <lass :hi<h is resposible for the Men$Bar and

MenI"e&' , In this <lass5 :e are definin+ thesi e of the

frame and lo<ation of the frame,

M+!r C4a''(

In the m(fr <lass5 :e ha?e implemented the interfa<es

A."% nL%'"ener and Ke+4%'"ener , These interfa<es are

resposible for the e3en" ,and4%n* in the notepad,

I ha?e +i?en short<ut =e(s to all the menu items in the notepad

li=e C"r4@N to new 5C"r4@O to O)en 5C"r4@S to Sa3e 5C"r4@F

to F n" et<,

I ha?e also +i?en the .,e.? : 2 in menu item for

L%newra))%n*7

C de ! r L%neWra))%n*(



Strin+ ar+sPae,+etA<tionCommand$%

if$ar+s,equals$QFontQ%%

M

font f1Pne: font$QFontQ5t/%

f1,setSi e$;..5B.%

f1,set'isible$true%

f1,setLo<ation$0..5/..%

if$ar+s,equals$QCutQ%%

M

t/,<ut$%

if$ar+s,equals$Q7asteQ%%

M

t/,paste$%

if$ar+s,equals$QCop(Q%%



M

Frame f/Pne: Frame$%

FileDialo+ fdPne: FileDialo+$f/5QSa?e #our

FileQ5FileDialo+,SA'E%

fd,setSi e$2..51..%

fd,set'isible$true%

this,setTitle$fd,+etFile$% Q*Gani=a&s

NotepadQ%

tr(

M

File6riter f:Pne:

File6riter$fd,+etDire<tor($%

fd,+etFile$%%

f:,:rite$t/,+etTe>t$%%

f:,<lose$%

<at<h$E><eption e%



M

if$ar+s,equals$QSele<t AllQ%%

M

t/,sele<tAll$%

if$ar+s,equals$Q7rintQ%%

M

ss s/ P ne: ss$%

s/,printRe<ord$t/,+etTe>t$%%

if$item/1,isSele<ted$%%

M

t/,setLine6rap$true%

else



@a?a pro+rammin+ lan+ua+e is unusual in that a pro+ram is both

<ompiled and interpreted, 6ith the <ompiler5 first (ou translate a

pro+ram into an intermediate lan+ua+e <alled Java bytecodes

",e )4a"! r&-%nde)enden" . de' %n"er)re"ed :+ ",e

%n"er)re"er n ",e Ja3a )4a"! r&7 The interpreter parses

and runs ea<h @a?a b(te<ode instru<tion on the <omputer,

Compilation happens 8ust on<e5 interpretation o<<urs ea<h

time the pro+ram is e>e<uted,

#ou <an thin= of @a?a b(te<odes as the ma<hine <ode

instru<tions for the Java Virtual Machine $@a?a ' %, E?er( @a?a

interpreter5 :hether it&s a de?elopment tool or a 6eb bro:ser

that <an run applets5 is an implementation of the @a?a ' ,

@a?a b(te<odes help ma=e Q:rite on<e5 run an(:hereQ

possible, #ou <an <ompile (our pro+ram into b(te<odes on an(

platform that has a @a?a <ompiler, The b(te<odes <an then be run

on an( implementation of the @a?a ' , That means that as lon+

as a <omputer has a @a?a ' 5 the same pro+ram :ritten in the



#ou =no: a lot about an ob8e<t b( =no:in+ its <lass, E?en

if (ou don&t =no: :hat a penn(*farthin+ is5 if I told (ou it

:as a bi<(<le5 (ou :ould =no: that it had t:o :heels5

handle bars5 and pedals,

Ob8e<t*oriented s(stems ta=e this a step further and

allo: <lasses to be defined in terms of other <lasses, For

e>ample5 mountain bi=es5 ra<in+ bi=es5 and tandems are all

=inds of bi<(<les, In ob8e<t*oriented terminolo+(5 mountain

bi=es5 ra<in+ bi=es5 and tandems are all '$:.4a''e' of the

bi<(<le <lass, Similarl(5 the bi<(<le <lass is the '$)er.4a''

of mountain bi=es5 ra<in+ bi=es5 and tandems, This

relationship is sho:n in the follo:in+ fi+ure)



add ?ariables and methods to the ones the( inherit from

the super<lass, Tandem bi<(<les ha?e t:o seats and t:o

sets of handle bars some mountain bi=es ha?e an e>tra

set of +ears :ith a lo:er +ear ratio,

Sub<lasses <an also 3err%de inherited methods and

pro?ide spe<iali ed implementations for those methods,

For e>ample5 if (ou had a mountain bi=e :ith an e>tra set

of +ears5 (ou :ould o?erride the Q<han+e +earsQ method

so that the rider <ould use those ne: +ears,

#ou are not limited to 8ust one la(er of inheritan<e, The

inheritan<e tree5 or <lass ,%erar.,+ 9 <an be as deep as

needed, ethods and ?ariables are inherited do:n throu+h

the le?els, In +eneral5 the farther do:n in the hierar<h( a

<lass appears5 the more spe<iali ed its beha?ior,

The Object <lass is at the top of <lass hierar<h(5 and ea<h

<lass is its des<endant $dire<tl( or indire<tl(%, A ?ariable of t(pe



Object <an hold a referen<e to an( ob8e<t5 su<h as an

instan<e of a <lass or an arra(, Object pro?ides beha?iors that

are required of all ob8e<ts runnin+ in the @a?a 'irtual a<hine,

For e>ample5 all <lasses inherit Object s to String method5

:hi<h returns a strin+ representation of the ob8e<t,

Inheritan<e offers the follo:in+ benefits)

1· Sub<lasses pro?ide spe<iali ed beha?iours from the

basis of <ommon elements pro?ided b( the super<lass,

Throu+h the use of inheritan<e5 pro+rammers <an reuse

the <ode in the super<lass man( times,

2· 7ro+rammers <an implement super<lasses <alled

a:'"ra." .4a''e' that define Q+eneri<Q beha?iours,

The abstra<t super<lass defines and ma( partiall(

implement the beha?iour5 but mu<h of the <lass is

undefined and unimplemented, Other pro+rammers fill

in the details :ith spe<iali ed sub<lasses,



17/ In"er!a.e

In En+lish5 an interfa<e is a de?i<e or a s(stem that

unrelated entities use to intera<t, A<<ordin+ to this definition5 a

remote <ontrol is an interfa<e bet:een (ou and a tele?ision set5

the En+lish lan+ua+e is an interfa<e bet:een t:o people5 and

the proto<ol of beha?iour enfor<ed in the militar( is the interfa<e

bet:een people of different ran=s, 6ithin the @a?a pro+rammin+

lan+ua+e5 an interfa<e is a de?i<e that unrelated ob8e<ts use to

intera<t :ith ea<h other, An interfa<e is probabl( most

analo+ous to a proto<ol $an a+reed on beha?iour%, In fa<t5 other

ob8e<t*oriented lan+ua+es ha?e the fun<tionalit( of interfa<es5

but the( <all their interfa<es proto<ols,

The bi<(<le <lass and its <lass hierar<h( defines :hat a

bi<(<le <an and <annot do in terms of its Qbi<(<leness,Q 9ut

bi<(<les intera<t :ith the :orld on other terms, For e>ample5 a



<an be implemented b( an( <lass an(:here in the <lass

hierar<h(, Interfa<es are useful for the follo:in+)

1· Capturin+ similarities amon+ unrelated <lasses

:ithout artifi<iall( for<in+ a <lass relationship,

2· De<larin+ methods that one or more <lasses are

e>pe<ted to implement,

3· Re?ealin+ an ob8e<t&s pro+rammin+ interfa<e :ithout

re?ealin+ its <lass,

1.3 O: e."

Ob8e<ts are =e( to understandin+ : e."- r%en"ed

te<hnolo+(, #ou <an loo= around (ou no: and see man(

e>amples of real*:orld ob8e<ts) (our do+5 (our des=5 (our

tele?ision set5 (our bi<(<le,

These real*:orld ob8e<ts share t:o <hara<teristi<s) The( all

ha?e state and behaviour , For e>ample5 do+s ha?e state $name5



<olor5 breed5 hun+r(% and beha?ior $bar=in+5 fet<hin+5 and

:a++in+ tail%, 9i<(<les ha?e state $<urrent +ear5 <urrent

pedal <aden<e5 t:o :heels5 number of +ears% and beha?ior

$bra=in+5 a<<eleratin+5 slo:in+ do:n5 <han+in+ +ears%,

Soft:are ob8e<ts are modeled after real*:orld ob8e<ts in that

the( too ha?e state and beha?ior, A soft:are ob8e<t

maintains its state in one or more 3ar%a:4e' 7 A ?ariable is an

item of data named b( an identifier, A soft:are ob8e<t

implements its beha?ior :ith &e", d' , A method is a

fun<tion $subroutine% asso<iated :ith an ob8e<t,

Definition of Ob8e<t ) An ob8e<t is a soft:are bundle of

?ariables and related methods,

#ou <an represent real*:orld ob8e<ts b( usin+ soft:are ob8e<ts,

#ou mi+ht :ant to represent real*:orld do+s as soft:are ob8e<ts

in an animation pro+ram or a real*:orld bi<(<le as soft:are



:orld bi<(<le :ould ha?e ?ariables that indi<ated the bi<(<le&s

<urrent state) its speed is /. mph5 its pedal <aden<e is -.

rpm5 and its <urrent +ear is the 3th +ear, These ?ariables are

formall( =no:n as %n'"an.e 3ar%a:4e' be<ause the( <ontain

the state for a parti<ular bi<(<le ob8e<t5 and in ob8e<t*oriented

terminolo+(5 a parti<ular ob8e<t is <alled an instance 7

F%*$re -=( B%.+.4e & de4ed a' a ' !"ware : e."

In addition to its ?ariables5 the soft:are bi<(<le :ould also

ha?e methods to bra=e5 <han+e the pedal <aden<e5 and <han+e

+ears, $The bi=e :ould not ha?e a method for <han+in+ the

speed of the bi<(<le5 as the bi=e&s speed is 8ust a side effe<t of

:hat +ear it&s in5 ho: fast the rider is pedallin+5 :hether the



a<<ess in @a?a is <o?ered in Controllin+ A<<ess to

embers of a Class,

En<apsulatin+ related ?ariables and methods into a neat

soft:are bundle is a simple (et po:erful idea that pro?ides

t:o primar( benefits to soft:are de?elopers)

1· M d$4ar%"+( The sour<e <ode for an ob8e<t <an be

:ritten and maintained independentl( of the sour<e

<ode for other ob8e<ts, Also5 an ob8e<t <an be easil(

passed around in the s(stem, #ou <an +i?e (our

bi<(<le to someone else5 and it :ill still :or=,

2· In! r&a"% n ,%d%n*( An ob8e<t has a publi< interfa<e

that other ob8e<ts <an use to <ommuni<ate :ith it, The

ob8e<t <an maintain pri?ate information and methods

that <an be <han+ed at an( time :ithout affe<tin+ the

other ob8e<ts that depend on it, #ou don&t need to

understand the +ear me<hanism on (our bi=e to use it,



17; C4a''

In the real :orld5 (ou often ha?e man( ob8e<ts of the same

=ind, For e>ample5 (our bi<(<le is 8ust one of man( bi<(<les in

the :orld, Usin+ ob8e<t*oriented terminolo+(5 :e sa( that (our

bi<(<le ob8e<t is an %n'"an.e of the <lass of ob8e<ts =no:n as

bi<(<les, 9i<(<les ha?e some state $<urrent +ear5 <urrent

<aden<e5 t:o :heels% and beha?iour $<han+e +ears5 bra=e% in

<ommon, !o:e?er5 ea<h bi<(<le&s state is independent of and

<an be different from that of other bi<(<les,

6hen buildin+ bi<(<les5 manufa<turers ta=e ad?anta+e of the

fa<t that bi<(<les share <hara<teristi<s5 buildin+ man( bi<(<les

from the same blueprint, It :ould be ?er( ineffi<ient to produ<e

a ne: blueprint for e?er( indi?idual bi<(<le manufa<tured,

In ob8e<t*oriented soft:are5 it&s also possible to ha?e man(

ob8e<ts of the same =ind that share <hara<teristi<s) re<tan+les5

emplo(ee re<ords5 ?ideo <lips5 and so on, Li=e the bi<(<le

manufa<turers5 (ou <an ta=e ad?anta+e of the fa<t that ob8e<ts of



ob8e<ts the( des<ribe) A blueprint of a bi<(<le is not a bi<(<le,

!o:e?er5 it&s a little more diffi<ult to differentiate <lasses and

ob8e<ts in soft:are, This is partiall( be<ause soft:are ob8e<ts are

merel( ele<troni< models of real*:orld ob8e<ts or abstra<t

<on<epts in the first pla<e, 9ut it&s also be<ause the term Qob8e<tQ

is sometimes used to refer to both <lasses and instan<es,

In the fi+ures5 the <lass is not shaded5 be<ause it

represents a blueprint of an ob8e<t rather than an ob8e<t

itself, In <omparison5 an ob8e<t is shaded5 indi<atin+ that

the ob8e<t e>ists and that (ou <an use it,

17< Me''a*e

A sin+le ob8e<t alone is +enerall( not ?er( useful, Instead5

an ob8e<t usuall( appears as a <omponent of a lar+er pro+ram

or appli<ation that <ontains man( other ob8e<ts, Throu+h the

intera<tion of these ob8e<ts5 pro+rammers a<hie?e hi+her*order



fun<tionalit( and more <omple> beha?iour, #our bi<(<le

han+in+ from a hoo= in the +ara+e is 8ust a bun<h of

titanium allo( and rubber b( itself5 the bi<(<le is in<apable

of an( a<ti?it(, The bi<(<le is useful onl( :hen another

ob8e<t $(ou% intera<ts :ith it $pedal%,

Soft:are ob8e<ts intera<t and <ommuni<ate :ith ea<h

other b( sendin+ messages to ea<h other, 6hen ob8e<t A

:ants ob8e<t 9 to perform one of 9&s methods5 ob8e<t A

sends a messa+e to ob8e<t 9

F%* ( Send%n* ! &e''a*e :e"ween : e."'

Sometimes5 the re<ei?in+ ob8e<t needs more information so that

it =no:s e>a<tl( :hat to do for e>ample5 :hen (ou :ant to

<han+e +ears on (our bi<(<le5 (ou ha?e to indi<ate :hi<h +ear



STEPS IN NOTEPAD

N "e)ad( T,e Te2" Ed%" r

This te>t editor is di?ided into ?arious modules, 'arious

modules are)

1· Firstl( I made the Te>tArea and enu9ars

usin+ 9orderLa(out in a @Frame,

2· Then after the abo?e module I +i?e the

enuItems to the enu9ar li=e Ne:5 Cut5 Cop(5

7aste5 7rint5 Sele<t All5 Font5 Line 6rap et<, All

this I made usin+ (fr <lass$user*defined%,

3· I also +i?e blue fore+round <olour to the @ enu,

4· After all this another module :hi<h uses



A<tionListener interfa<e is made, This module

:as the most important and time*ta=in+

module, In this module I define all the e?ents

:hi<h :ill ta=e pla<e on a<tion7erformed,

1· At the end I :or=ed on module named as

Settin+s and Format, In these module I ha?e

+i?en the Font settin+s and Line :rap fun<tion,

2· All the notepad :or=s on t:o frames5 one is main

frame ha?in+ Te>tArea5 se<ond one is ha?in+

font settin+s,

Apart from frame I ha?e used man( Dialo+s li=e

FileDialo+ for open and sa?e the files5 @Option7ane

for e>it messa+e :hile <losin+ the main frame,



Strin+ strP+etTitle$%

m(fr$Strin+ title%

M

super$title%

t/Pne: @Te>tArea$%

+etContent7ane$%,setLa(out$ne: 9orderLa(out$%%

@S<roll7ane 8s/ P ne: @S<roll7ane$%

8s/,set'ie:port'ie:$t/%

+etContent7ane$%,add$8s/5

8a?a,a:t,9orderLa(out,CENTER%

@ enu9ar mbrPne: @ enu9ar$%

set@ enu9ar$mbr%

@ enu filePne: @ enu$QFileQ% file,setFore+round$ne:

8a?a,a:t,Color$/.15 /.15 133%%



@ enuItem item0Pne:

@ enuItem$QNe:Q% file,add$item0%

@ enuItem item/Pne: @ enuItem$QOpenQ%

@ enuItem item1Pne: @ enuItem$QSa?eQ%

@ enuItem item/0Pne: @ enuItem$QE>itQ%

file,add$item/%

file,add$item1%

file,add$item/0%

@ enu editPne: @ enu$QEditQ%

edit,setFore+round$ne: 8a?a,a:t,Color$/.15 /.15

133%% @ enuItem item2Pne: @ enuItem$QCutQ%

edit,add$item2%

@ enuItem item3Pne: @ enuItem$Q7asteQ%

@ enuItem item;Pne: @ enuItem$QCop(Q%

@ enuItem itemBPne: @ enuItem$QSele<t AllQ%



mbr,add$file%

mbr,add$edit%

mbr,add$settin+s%

mbr,add$format%

item/,setA<<elerator$8a?a>,s:in+,Ge(Stro=e,+etGe(Stro=

e$8a?a,a:t,e?ent,Ge(E?ent,'G O58a?a,a:t,e?ent,InputE?

ent,CTRL ASG%%

item1,setA<<elerator$8a?a>,s:in+,Ge(Stro=e,+etGe(Stro=

e$8a?a,a:t,e?ent,Ge(E?ent,'G S58a?a,a:t,e?ent,InputE?e

nt,CTRL ASG%%


e$8a?a,a:t,e?ent,Ge(E?ent,'G N58a?a,a:t,e?ent,InputE?



ent,CTRL ASG%%


e$8a?a,a:t,e?ent,Ge(E?ent,'G 5

8a?a,a:t,e?ent,InputE?ent,CTRL ASG%%


e$8a?a,a:t,e?ent,Ge(E?ent,'G '58a?a,a:t,e?ent,InputE?

ent,CTRL ASG%%

item;,setA<<elerator$8a?a>,s:in+,Ge(Stro=e,+etGe(Stro=

e$8a?a,a:t,e?ent,Ge(E?ent,'G C58a?a,a:t,e?ent,InputE?

ent,CTRL ASG%%

itemB,setA<<elerator$8a?a>,s:in+,Ge(Stro=e,+etGe(Stro=



e$8a?a,a:t,e?ent,Ge(E?ent,'G A58a?a,a:t,e?ent,InputE?

ent,CTRL ASG%%

item ,setA<<elerator$8a?a>,s:in+,Ge(Stro=e,+etGe(Stro=

e$8a?a,a:t,e?ent,Ge(E?ent,'G 758a?a,a:t,e?ent,InputE?e

nt,CTRL ASG%%

item-,setA<<elerator$8a?a>,s:in+,Ge(Stro=e,+etGe(Stro=

e$8a?a,a:t,e?ent,Ge(E?ent,'G F58a?a,a:t,e?ent,InputE?e

nt,CTRL ASG%%

file,set nemoni<$&F&%

edit,set nemoni<$&E&%

settin+s,set nemoni<$&S&%

format,set nemoni<$&O&%

item/,addA<tionListener$this%



@Option7ane,sho: essa+eDialo+$null5Q#ou

are E>itin+Q%

S(stem,e>it$.%

4K int i

Strin+ s/ P QDo (ou 6ant to E>itQ

iP @Option7ane,sho:ConfirmDialo+$null5s/5QE>it

essa+eQ5 @Option7ane,#ES NO O7TION% if$i P/%

M

essa+e7ane,set essa+e7ane7ro?ider$Q6ant to Sa?eQ%



essa+e7ane pane P

essa+e7ane,+etDo<umentInstan<e$m(fr%

Result result P pane,sho:$m( essa+e%

if $result,userChose$Option,SA'E%%

M

44 sa?e our do<ument,,,

else if $result,userChose$Option,CANCEL%%

M

44 <an<el,,,

K4



%

publi< ?oid =e(7ressed$Ge(E?ent =e%

M

publi< ?oid =e(Released$Ge(E?ent =e%

M

publi< ?oid =e(T(ped$Ge(E?ent =e%

M



publi< ?oid a<tion7erformed$A<tionE?ent ae%

M

Strin+ ar+sPae,+etA<tionCommand$%

if$ar+s,equals$QFontQ%%

M

font f1Pne: font$QFontQ5t/%

f1,setSi e$;..5B.%

f1,set'isible$true%

f1,setLo<ation$0..5/..%



M

this,setTitle$QTe>tEditor 7lusQ%

t/,setTe>t$QQ%

t/,setFont$f%

if$ar+s,equals$QOpenQ%%

M


FileDialo+ fdPne: FileDialo+$f/5QOpen #our

FileQ% fd,setSi e$1..51..%

fd,set'isible$true%

S(stem,out,println$fd,+etDire<tor($%%

S(stem,out,println$fd,+etFile$%%

tr(



M

t/,setTe>t$QQ%

FileReader frPne:

FileReader$fd,+etDire<tor($% fd,+etFile$%%

int i

Strin+ s/PQQ

:hile$$iPfr,read$%% P*/%

M

s/ P$$<har%i%

t/,append$s/%

fr,<lose$%



<at<h$E><eption e%

M

if$ar+s,equals$QSa?eQ%%

M

1/ Strin+ str/5str1

2/ if$str,equals$QTe>tEditor 7lusQ%%44 WW fla+PP.%

1/ M


FileDialo+ fdPne: FileDialo+$f/5QSa?e #our



FileQ5FileDialo+,SA'E%

fd,setSi e$2..51..%

fd,set'isible$true%1/ str/Pfd,+etDire<tor($%

1/ str1Pfd,+etFile$%

44S(stem,out,println$fd,+etDire<tor($%%

44S(stem,out,println$fd,+etFile$%%

this,setTitle$fd,+etFile$% Q*Te>tEditor 7lusQ%

1/ fla+P/

tr(

M

File6riter f:Pne: File6riter$fd,+etDire<tor($%

fd,+etFile$%%

f:,:rite$t/,+etTe>t$%%

f:,<lose$%



44M



44

44

if$ar+s,equals$QSele<t AllQ%%

M

t/,sele<tAll$%

if$ar+s,equals$Q7rintQ%%

M

ss s/ P ne: ss$%

s/,printRe<ord$t/,+etTe>t$%%

if$item/1,isSele<ted$%%



M

t/,setLine6rap$true%

else

M

t/,setLine6rap$false%

if$ar+s,equals$QE>itQ%%

M

S(stem,e>it$.%



<lass m(notepad

M

publi< stati< ?oid main$Strin+ s %

M

m(fr fPne: m(fr$QTe>tEditor

7lusQ% f,setSi e$2..52..%

f,set'isible$true%

f,setLo<ation$.5.%

<lass font e>tends Frame implements A<tionListener

M

Choi<e </5<15<0

9utton b/5b1



<1,add$Q/.Q%

<1,add$Q/1Q%

<1,add$Q/2Q%

<1,add$Q/;Q%

<1,add$Q/ Q%

<1,add$Q1.Q%

<1,add$Q11Q%

<1,add$Q12Q%

<1,add$Q1 Q%

<1,add$Q01Q%

<1,add$Q0;Q%

<1,add$Q2.Q%

<1,add$Q22Q%

<1,add$Q2 Q%

<1,add$Q;.Q%



add6indo:Listener$ne: 6indo:Adapter$%

Mpubli< ?oid :indo:Closin+$6indo:E?ent :e%

M

set'isible$false%

%

publi< ?oid a<tion7erformed$A<tionE?ent ae%

M

Font fPnull

if$<0,+etSele<tedItem$%PPQ9oldQ%

M



<ur!ei+ht P font!ei+ht

if $p+ P null%

M

p+,setFont $t(pefa<e%

p+,dra:Strin+ $ne>tLine5 mar+in5

<ur!ei+ht * fontDes<ent%

:hile $ne>tLine P null%

<at<h $EOFE><eption eof%

M



<at<h $Thro:able t%

M

t,printSta<=Tra<e$%

p+,dispose$%

if $p8ob P null%

p8ob,end$%



CONCLUSION

I ha?e su<<essfull( made the te>t editor similar to

that of i<rosoft&s notepad, This notepad <an ma=e

html files also for ma=in+ :eb pa+es, I +ained a lot

of =no:led+e and ha?e learnt so man( thin+s :hile

:or=in+ on this pro8e<t,



FUTURE WORK AND SCOPE

9elo: are the points :hi<h I :ould li=e to au+ment in m(

<urrent te>t editor )

1· I :ould li=e to ma=e this editor more user

friendl( b( +i?in+ more features,

2· I :ould li=e to insert ne: features in this editor

li=e Status bar5 mor dialo+ bo>es et<,

new report.rtf

Documents

Transcript of new report.rtf