Java Full File

8/18/2019 Java Full File

1/26

1Date…………… Practical- 1813344

Aim-Introduction to Java.

Objective- To know the basics of Java and rint te!t on the console.

System Requirements- Java installed s"ste# with Java develo#ent kit $JD%&.

Theory-Java is a 'eneral urose( ob)ect oriented ro'ra##in' lan'ua'e develoed b" *un

+icrosoft *"ste#s in 1,,1.ri'inall" called OAK b" Ja#es oslin'. Java /irtual +achine

'ives Java its latfor# indeendence. In Java the 0)avac co##and is the Java co#iler that isused to co#ile the ro'ra#. The Java co##and is used to run the ro'ra#.

There are #an" features in Java( which are as follows 2

1. Compiled And Interpreted Java co#bines both aroaches thus #akin' Java two-*ta'e

s"ste#. Java co#iler converts the source code in to the b"te code instruction. "te codes

are not )ust the #achine instruction and therefore( in the second sta'e( Java interreter

'enerate the #achine code that can be directl" e!ecuted b" the #achine that is runnin' the )ava ro'ra#.

!. "l#t$orm Independent And "ort#ble Java ro'ra# can be easil" #oved fro# one

co#uter s"ste# to another( an"where and an"ti#e. Java ro'ra# also use the concet of

rite nce 5nd 6un 5n"where.%. Object Oriented Java is a true b)ect riented 7an'ua'e. 5l#ost ever"thin' in Java is

the ob)ect. 5ll ro'ra# code and data resides within ob)ects and classes.

&. Robust And Secure Java is a robust lan'ua'e as is rovides so #an" safe'uards to

ensure the reliable code. It also incororated the concet of e!cetion handlin' which

cature series errors and eli#inates an" risk of crashin' the s"ste#. The absence of ointers in Java ensures ro'ra# can not 'ain access to #e#or" location without

authentication.

'. (ultithre#ded +ultithread #eans handlin' #ultile tasks si#ultaneousl". Java suorts

#ultithreaded ro'ra#. This #eans that we need not wait for the alication to finish onetask before be'innin' the another.

Al)orithm-

1. irstl" we write source code of our ro'ra# in note ad.

9. *ave the ro'ra# with 0.)ava e!tension with sa#e na#e as class na#e.3. en console.

4. o to director" where ro'ra# is saved throu'h 0cd co##and $:han'e Director"

co##and&.

;. :o#ile the ro'ra# throu'h 0)avac co##and.

"ro)r#m Code-

class

@


2/26


ublic *tatic void #ain$*trin' ar'sAB&

@

*"ste#.out.rintln$CelloC&EF

F

Output-

Conclusion- e have learned how Java ro'ra#s are created( saved( co#iled and run.


3/26


Aim rite a ro'ra# to find the factorial of a nu#ber usin'

• :o##and line ar'u#ents

• *canner class

Objectives In this ractical we have to find the factorial of a nu#ber usin' co##and inlinear'u#ent and *canner class.

Requirements2 ardware2 *tandard Pc

*oftware2 Gotead( )dk

Theory

Comm#nd line #r)ument in j#v# e can ass values to our ro'ra# at runti#e usin'co##and line ar'u#ent. If we want to ass so#e values to the )ava ro'ra# we can sul" it as

co##and line ar'u#ents.

Sc#nner cl#ss 5 si#le te!t *canner which can arse ri#itive t"es and strin's usin' re'ular e!ression. 5 scanner breaks its inut tokens usin' a deli#iter attern ( which b" default

#atches whitesace the resultin' tokens #a" be converted into values of different t"es usin'

the various ne!t #ethods."ro)r#m Code

Comm#nd line #r)ument

class factorial1

@ublic static void #ain$*trin' ar'sAB&

@inti(sH1Eint nHInte'er.arseInt$ar'sAB&E

for$iH1EiHnEiKK&

@sHsLiE

F*"ste#.out.rintln$Cactorial of a nu#ber is CKs&E

FF

Sc#nner cl#ss

i#ort )ava.util.*cannerE

class factorial

@ublic static void #ain$*trin' ar'sAB&

@int fH1(n(iE

*"ste#.out.rintln$C


4/26


Output

Comm#nd line #r)ument

Sc#nner cl#sses

Conclusion e have successfull" calculated the factorial of a nu#ber usin' co##and linear'u#ent and usin' *canner class.


5/26


Aim- Introduction to 5lets.

Objective- To know the basics of 5let and rint te!t on the 5let window.


Theory- 5lets are e!tra add-ons rovided b" Java.5n 5let is a s#all alication that

erfor#s one secific task which runs within the scoe of a lar'e ro'ra#. 5let can rovide

web alications with interactive features that canMt be rovided b" T+7.*ince(Java b"te codeis latfor# indeendent(Java 5lets can be e!ecuted b" browsers runnin' under #an"

Platfor#s. hen a Java Technolo'" enabled eb rowser Processes a a'e that contains an

5let(the 5let code is transferred to the client s"ste# and e!ecuted b" the browser Java/irtual +achine$J/+&.

Adv#nt#)es O$ *#v# Applets

1. 5lets are suorted b" #ost eb rowsers.

9. Java 5lets are fast.3. The sa#e alets can work on all installed versions of )ava.

+is#dv#nt#)s o$ Applets

1. It reNuires the )ava lu'ins.

9. *o#er browsers #ostl" #obile browsers do not run )ava alets.3. *o#e alets reNuires a secific )ava runti#e environ#ent.

Al)orithm-

1. I#ort the )ava acka'es.

9. rite the alet code.

3. Definin' the class that inherits the alet class.4. :reate ob)ects if needed b" alets.

"ro)r#m Code-

i#ort )ava.alet.LEi#ort )ava.awt.LE

OLalet codeHCalet1C hei'htH9 widthH9OaletLO

ublic class alet1 e!tends 5let@

ublic void aint$rahics '&

@'.draw*trin'$CelloC(?(1&E

F

F

Output-


6/26


Conclusion- 5lets have been studied.


7/26


Aimrite a ro'ra# to find the su# of two nu#bers and disla" the su# as a #essa'e.

Objective-In this ro'ra#( we will learn to use the button and how to erfor# eevent handlin'on buttons.


Theory

The Abstr#ct ,indo Toolit $A,T& is JavaMs ori'inal latfor#-deendent

windowin''rahics( and user-interfacewid'et toolkit recedin' *win'. The 5T is art of theJava oundation :lasses$J:& Q the standard 5PI for rovidin' a 'rahical user interface $RI&

for a Java ro'ra#. 5T is also the RI toolkit for a nu#ber of Java +< rofiles.

Al)orithm-

1. irstl" we write source code of our ro'ra# in note ad.9. *ave the ro'ra# with 0.)ava e!tension with sa#e na#e as class na#e.3. en console.

4. o to director" where ro'ra# is saved throu'h 0cd co##and $:han'e Director"

co##and&.;. :o#ile the ro'ra# throu'h 0)avac co##and.

"ro)r#m Code-

i#ort )ava.awt.LEi#ort )ava.alet.LE

i#ort )ava.awt.event.LE

OLalet codeHChelloC widthH; hei'htH3

OaletLO ublic class hello e!tends 5let i#le#ents 5ction7istener

@

Te!tield t1(t9E

7abel l1(l9Eutton bE

*trin' #s'HCCE ublic void init$&

@

l1Hnew 7abel$CGu#ber 1C&El9Hnew 7abel$Cnu#ber 9C&E


8/26


9/26


Conclusion- e have learned how to create buttons in )ava and erfor# event handlin' on the#.


10/26


Aim rite a ro'ra# in )ava to create buttons and erfor# event handlin' on these buttons.

Objective-In this ractical we will learn how to create buttons and erfor# event handlin' onthese buttons.


Theory

:han'e in the state of an ob)ect is known as event i2e(event describes the chan'e in the state of source.

"ro)r#m Code-

i#ort )ava.alet.LEi#ort )ava.awt.LE

i#ort )ava.awt.event.LE

OLalet codeHCalet3C hei'htH; widthH3OaletLO

ublic class alet3 e!tends 5let i#le#ents 5ction7istener @

utton b1(b9(b3E

*trin' #s'HCCE ublic void init$&

@

b1Hnew utton$CletC&E b9Hnew utton$CsurriseC&E

b3Hnew utton$Clau'hC&E

add$b1&E

add$b9&E


11/26


add$b3&E

b1.add5ction7istener$this&E

b9.add5ction7istener$this&E b3.add5ction7istener$this&E

F

ublic void actionPerfor#ed$5ction


12/26


Conclusion- e have learned how Java ro'ra#s are created( saved( co#iled and run.


13/26


AimTo insert # record in the d#t#b#se o$ mysql usin) j#v#.

ObjectiveIn this ractical( we will learnto insert records in database of #"sNl in )ava.

System Requirementardware2 Deskto Pc*oftware2 indows Gotead( :o##and Pro#t( Java 1.?( +" *Nl :onnector ;.1.

Theory+"*S7 is an oen source relational database #ana'e#ent s"ste# $6D+*&. In )ul"

913( it was the worlds second #ost widel" used 6D+* and the #ost widel" used clientserver #odel 6D+*. It is na#ed after co-founder #ichael ideniudss dau'hter( +". The *Sl

acron"# stands for *tructured Suer" 7an'ua'e.

"ro)r#m Code

i#ort )ava.util.*cannerE

i#ort )ava.sNl.LE

i#ort )ava!.sNl.LE

ublic class insert@

ublic static void #ain$*trin' ar'AB&

@

*trin' #ecode(userna#e(assword(dburl(Nuer"(#ena#e(#cit"Eint #salE

userna#eHCrootCE asswordHC193CE

dburlHC)dbc2#"sNl2OOlocalhostO#"sNlCE

tr"@

:lass.forGa#e$Cco#.#"sNl.)dbc.DriverC&E

:onnection

conHDriver+ana'er.'et:onnection$dburl(userna#e(assword&E*tate#ent st#tHcon.create*tate#ent$&E

*canner inutHnew *canner$*"ste#.in&E

*canner inut1Hnew *canner$*"ste#.in&E*"ste#.out.rintln$C


14/26


catch$*S7

@

e.rint*tackTrace$&EF

FF

Output


15/26


Conclusion In this e!. we have insert a record in the database of #"sNl usin' )ava.


16/26


Aim,rite # pro)r#m to vie the d#t#b#se o$ mysql usin) j#v# pro)r#m.

Objective2In this ractical( we will learn to view the entries of database of #"sNl in )ava.


Theory +"*S7 is an oen source relational database #ana'e#ent s"ste# $6D+*&. In )ul"

913( it was the worlds second #ost widel" used 6D+* and the #ost widel" used clientserver #odel 6D+*. It is na#ed after co-founder #ichael ideniudss dau'hter( +". The *Sl

acron"# stands for *tructured Suer" 7an'ua'e.

Codin)

i#ort )ava.sNl.LE

i#ort )ava!.sNl.LE

ublic class select

@ ublic static void #ain$*trin' ar'AB&

@

*trin' userna#e(assword(dburl(Nuer"(#code(#na#e(#cit"E

int #salEuserna#eHCrootCE

asswordHC193CEdburlHC)dbc2#"sNl2OOlocalhostO#"sNlCE

Nuer"HCselect L fro# e#1CE

tr"@

:lass.forGa#e$Cco#.#"sNl.)dbc.DriverC&E

:onnection con H

Driver+ana'er.'et:onnection$dburl(userna#e(assword&E*tate#ent st#tHcon.create*tate#ent$&E

6esult*et rsHst#t.e!ecuteSuer"$Nuer"&E

while$rs.ne!t$&&@

#codeHrs.'et*trin'$1&E

#na#eHrs.'et*trin'$9&E#salHrs.'etInt$3&E

#cit"Hrs.'et*trin'$4&E

*"ste#.out.rintln$#codeKC(CK#na#eKC(CK#salKC(CK#cit"&E

F

con.close$&E

Fcatch$:lassGotound

@

e.rint*tackTrace$&EF

catch$*S7

@e.rint*tackTrace$&E


17/26


F

F

F

Output

Conclusion In this e!. we have studied how to view the database of #"sNl usin' )ava ro'ra#.


18/26


19/26


i#ort )ava!.servlet.LE

i#ort )ava!.servlet.htt.LE

ublic class elloorld e!tends tt*ervlet@

ublic void doet$tt*ervlet6eNuestreNuest(tt*ervlet6esonse resonse&

throws I..9>Uwebas

Step &. create a folder$sa"


20/26


Aim ,rite # j#v# pro)r#m to sho ho the client server model ors.

ObjectiveIn this ractical( we will learn the workin' of client server #odel.


Theory2

Clientserver model5 co#uter network dia'ra# of clients co##unicatin' with a server via the Internet. The clientV

server #odel of co#utin' is a distributed alication structure that artitions tasks or workloads

between the roviders of a resource or service( called servers( and service reNuesters( calledclients. ften clients and servers co##unicate over a co#uter network on searate hardware(

but both client and server #a" reside in the sa#e s"ste#. 5 server host runs one or #ore server

ro'ra#s which share their resources with clients. 5 client does not share an" of its resources(

but reNuests a serverMs content or service function. :lients therefore initiate co##unicationsessions with servers which await inco#in' reNuests.

"ro)r#m Code

#2 S3R43Ri#ort )ava.io.LE

i#ort )ava.net.LEclass server

@

ublic static void #ain$*trin' ar'AB&throws I

*erver*ocketssHnew *erver*ocket$;;;&E

*ocket sHss.accet$&E

Printriter outHnew Printriter$s.'etutut*trea#$&(true&Euffered6eader br1Hnew uffered6eader$new

Inut*trea#6eader$s.'etInut*trea#$&&&E

uffered6eaderbrHnew uffered6eader$new

Inut*trea#6eader$*"ste#.in&&E

*trin' strE while$true&

@

strHbr1.read7ine$&E

*"ste#.out.rintln$str&Eif$str.eNualsI'nore:ase$Ce!itC&&

@

*"ste#.e!it$&EF

*trin' str1Hbr.read7ine$&E

out.rintln$str1&E

FF

F


21/26


b2 C5I36T

i#ort )ava.io.LE

i#ort )ava.net.LEclass client

@

ublic static void #ain$*trin' ar'AB&throws I

*ocket sHnew *ocket$C7ocalhostC(;;;&E

uffered6eaderbrHnew uffered6eader$new Inut*trea#6eader$*"ste#.in&&Ewhile$true&

@

*trin' strHbr.read7ine$&E

Printriter outHnew Printriter$s.'etutut*trea#$&(true&Eout.rintln$str&E

if$str.eNualsI'nore:ase$Ce!itC&&

@

*"ste#.e!it$&EF

uffered6eader br1Hnew uffered6eader$new Inut*trea#6eader$s.'etInut*trea#$&&&E*trin' str1Hbr1.read7ine$&E

*"ste#.out.rintln$str1&E

FF

F

Output

SERVER


22/26


C5I36T

Conclusion In this e!. we have studied a )ava ro'ra# to show how the client server #odel

works.


23/26


Aim rite a ro'ra# to erfor# )ava strin's.Objective In this ractical( we will learn about strin's in )ava.

System Required ardware reNuired 2 *tandard P:*oftware reNuired 2 Gotead( )dk1.?

Theory*win' is a RIwid'et toolkit for Java. It is art of racleMs Java oundation

:lasses$J:& Q an 5PI for rovidin' a 'rahical user interface $RI& for Java ro'ra#s.

*win' was develoed to rovide a #ore sohisticated set of RI co#onents than the earlier5bstract indow Toolkit $5T&. *win' rovides a native look and feel that e#ulates the look

and feel of several latfor#s( and also suorts a lu''able look and feel that allows alications

to have a look and feel unrelated to the underl"in' latfor#. It has #ore owerful and fle!ibleco#onents than 5T. In addition to fa#iliar co#onents such as buttons( check bo!es and

labels( *win' rovides several advanced co#onents such as tabbed anel( scroll anes( trees(

tables( and lists.

Rnlike 5T co#onents( *win' co#onents are not i#le#ented b" latfor#-secific code.

Instead( the" are written entirel" in Java and therefore are latfor#-indeendent. The ter#Cli'htwei'htC is used to describe such an ele#ent

"ro)r#m Code

i#ort )ava.awt.LE

i#ort )ava!.swin'.LE

ublic class :alculator1@

Jra#e fE

JPanel 1(9(3(4(;E

rivate JTe!tieldtieldE rivate J+enu( nu#?( nu#8(nu#,(nu#E

rivate Juttonb5dd(b*ub(b+ul(bDiv(eNualsE

:alculator1$&@

f H new Jra#e$C:alculatorC&E

+enuar H new J+enuar$&E


24/26


1 H new JPanel$&E

9 H new JPanel$&E

3 H new JPanel$&E 4 H new JPanel$&E

; H new JPanel$&E

tield H new JTe!tield$3;&E

nu# H new Jutton$CC&E

nu#1 H new Jutton$C1C&Enu#9 H new Jutton$C9C&E

nu#3 H new Jutton$C3C&E


nu#; H new Jutton$C;C&Enu#> H new Jutton$C>C&E

nu#? H new Jutton$C?C&E


nu#, H new Jutton$C,C&Enu#Hnew Jutton$CC&E

b5dd H new Jutton$CKC&E

b*ub H new Jutton$C-C&E

b+ul H new Jutton$C!C&E bDiv H new Jutton$COC&E

eNuals H new Jutton$CHC&E

F

ublic void launchra#e$&

@

tield.setTe!t$C.C&Etield.set


25/26


;.add$nu#&E

;.add$b5dd&E ;.add$eNuals&E

9.set7a"out$new rid7a"out $1( 3( 9( 9& &E 3.set7a"out$new rid7a"out $1( 3( 9( 9& &E

4.set7a"out$new rid7a"out $1( 3( 9( 9& &E

;.set7a"out$new rid7a"out $1( 3( 9( 9& &E

f.set7a"out$new rid7a"out $>( 1& &E

f.set6esiWable$false&E

f.set*iWe$3(9;&Ef.add$tield&E

f.add$1&E

f.add$9&E

f.add$3&Ef.add$4&E

f.add$;&Ef.set/isible$true&E

f.setJ+enuar$+enuar&E

f.ack$&EF

ublic static void #ain $*trin' ar'sAB&@

:alculator1 s H new :alculator1$&Es.launchra#e$&E

F

F

Output


26/26


Conclusion e have studied about *trin's in Java and erfor#ed their use.

Date post:	07-Jul-2018
Category:	Documents
Upload:	parveen-kumar
View:	230 times
Download:	0 times

Java Full File

Documents