java file.doc

7/25/2019 java file.doc

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INDEX

S.No NAME OF THE PROGRAMS SIGNATURE

1 Program for learning basics of java language and its

library.

2 Program to create an applet with a textfield and

three buttonswhen you press each button ma!e

some different text appear in the textfield.

3 Program to create an applet with a button and a

textfieldwrite a handle event so that if the button

have been focusedcharacter types into it will appear

in textfield

4 Program to show connectivity of java with database

5 Program to create an editor screen containing

menusdialog boxes etc using java

6 Program to show "ava Networ!ing#"ava $oc!ets

and %&I7 Program to develop a servlet that get invo!ed when

a form on a web page in '(&) is submitted.


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)earn basics of java language and its development

tools*libraries.

Introduction+Java is an object-oriented programming language with a built-in application

programming interface (API) that can handle graphics and user interfaces and that can be

used to create applications or applets. Because of its rich set of APIs! similar to"acintosh and #indows! and its platform independence! Java can also be thought of as a

platform in itself. Java also has standard libraries for doing mathematics

Need for "ava+$he java language contains built in support for the #orld #ide #eb(###)! which is a

service of the internet to retrieve information in the form of the #eb pages. $he primar%motive behind developing Java language was the need for portable and platform

independent language that could be used to produce code that run on a variet% of &P'

under different environments. ne can use Java to develop etwor* oriented programs

because networ*ing features are built in features in Java.

,eatures of "ava + +imple

bject-riented

&ompiled and interpreted

robust

"ultithreaded

Platform Independent

,igh Performance

istributed

+ecure

Portable

$I&P)E

A java programmer does not need to *now the interior details of java as to how memor%

is allocated to data because in java! $he programmer does not need to handle memor%

manipulation. Java is a simple language that can be learn easil% even if u have just started

programming. It was designed to be eas% for the programmer to learn and use effectivel%.$he s%nta for various java statements is eas% to understand.

-"E/( -%IEN(ED

Java supports the object oriented approach to develop programs.It supports various

features of an object oriented language. $o implement the object oriented language theentire code of the program must be written within the class. $he java language does not


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support stand-alone statements. /ven the most basic program in java must be within a

class .

/-&PI)ED 0ND IN(E%P%E(ED

$he java programs are first compiled and then interpreted while compiling!the compilerchec*s for the error in the programs. After %ou have made the program error free andhave recompiled it! the compiler converts the program into computer language. $he java

compiler compiles the code to a b%te code that is understood b% the java. $he java virtual

machine then interprets this b%tecode into the computer code and runs it.

P-%(0)E

Portabilit% refers to the abilit% of the program to run on an% platform without changing

the source code of the program.$he java enables the creation of cross platform programsb% compiling the programs into an intermediate representation called java b%tecode. 0ou

can eecute this code on an% platform.

P)0(,-%& INDEPENDEN(

Java is a platform for application development. Java b%te code is eactl% the same on

ever% platform. Java programs that have been compiled into b%te code still need an

interpreter to eecute them on an% given platform. $he interpreter reads the b%te code andtranslates it into the native language of the host machine on the fl%. +ince the b%te code is

completel% platform independent! onl% the interpreter and a few native libraries need to

be ported to get Java to run on a new computer or operating s%stem.

%-1$(

Java implements a robust eception handling mechanism to deal with both epected and

unepected errors. $he worst that an applet can do to a host s%stem is bringing down theruntime environment. It cannot bring down the entire s%stem.

"ost importantl% Java applets can be eecuted in an environment that prohibits themfrom introducing viruses! deleting or modif%ing files! or otherwise destro%ing data and

crashing the host computer. A Java enabled web browser chec*s the b%te codes of an

applet to verif% that it doesnt do an%thing nast% before it will run the applet.

&1)(I('%E0D

Java is inherentl% multi-threaded. A single Java program can have man% different threads

eecuting independentl% and continuousl%. $hree Java applets on the same page can runtogether with each getting e1ual time from the &P' with ver% little etra effort on the

part of the programmer.

'I2' PE%,-%&0N/E

Java b%te codes can be compiled on the fl% to code that rivals &22 in speed using a 3just-

in-time compiler.3 +everal companies are also wor*ing on native-machine-architecturecompilers for Java. $hese will produce eecutable code that does not re1uire a separate

interpreter! and that is indistinguishable in speed from &22.


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$ome important concept of --P$

4 /ncapsulation

5 Abstraction

6 Inheritance

7 Pol%morphism

EN/0P$1)0(I-N

/ncapsulation is the process of hiding all of the details of an object that do not contributeto its essential characteristics./ncapsulation implies that the non-essential details of an

object are hidden from the user and an access is provided to its essential details. $he

compleit% is hidden from the user as a result of encapsulation.In object orientedmethodolog%! need of encapsulation arises because the emphasis is on designing classes

in such a manner that the classes share data and methods among themselves.

/ncapsulation is the feature that provides securit% to the data and the methods of a class.

0$(%0/(I-N

An abstraction denotes the essential characteristics of an object that uni1uel%

distinguishes it from all other *inds of objects and thus crispl% defined conceptualboundaries !relative to the perspective of the viewer. Abstraction refers to the attributes of

an object that clearl% demarcates it from other objects .$o implement abstraction! we also

use the encapsulation feature .encapsulation hides the irrelevant details of an object andabstraction ma*es onl% the relevant details of an object visible .#e use access specifier to

implement abstraction and encapsulation.

IN'E%I(0N/E

In object-oriented methodolog%! inheritance enables %ou to etend the functionalit% of an

eisting class. #e create a class that inherits the attributes and the behavior of anotherclass .In addition! the new class can consist of a new attributes and the behaviors that are

specific to the class .In terms of classes and object! attributes refer to the methods.

A program can have following t%pes of inheritance8

(a.) +ingle inheritance(b.)"ultiple inheritance

P-)3&-%P'I$&

Pol%morphism is derived from two 9atin words : pol% !which means man% ! and morph!

which means forms .An% thing that eist in more than one form is *nown as pol%morph .

In object-oriented methodolog%! pol%morphism is the feature that enables us to assign adifferent meaning or usage to an entit% in different contets. $he entit% can be a variable !

method !or an object .Pol%morphism enables an entit% to have more than one form


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depending upon the contet in which it is used . Pol%morphism enables one entit% to be

used as a general categor% for different t%pes of actions.

"ava 0rchitecture

;arious components of Java architecture are84.Java programming language and Java class file

5. Java platform

"ava Programming )anguage and class file+

Java programs are saved with an etension !.java. A .java file is compiled to generate

the .class file! which contains the b%tecode. $he J;" converts the B%tecode contained inthe .class file to machine object code. $he J;" needs to be implemented for each

platform running on different operating s%stems.

"ava platform

A java platform is the hardware or software environment in which a program runs. $he

java platform has two components8

Java ;irtual "achine (J;")Java Application Programming Interface (Java API)

J;" is a standardi


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$he J;" forms the base for the java platform and is convenient to use on various

hardware based platforms.

/omponents of "4&+

1.Class loader

$he class loader loads the class files! which are re1uired b% the program running in the

memor%. $he classes are loaded d%namicall% when re1uired b% the running program.

2. Execution engine

$he Java eecution engine is the component of the J;" that runs the b%tecode one line

after another. It converts the b%tecode into the machine object code and runs it.

3. Just In Time(JIT) compiler

$he JI$ is used for compiling the b%tecode into the eecutable code. $he J;" runs theJI$ compiled code without interpreting because the JI$ compiled code is in the machine

code format.

"ava 0pplication Programming Interface+

$he Java API is a collection of software components that provide capabilities! such as

='I. $he related classes and interfaces of the Java API are grouped into pac*ages.

0dvantages of -bject -riented Programming+

4. >eal #orld Programming5. >eusabilit% of the code

6. "odularit% of the code


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7. >esillence to change

?. Information hiding

"ava applications

1.Applications that use Character User Interace(CUI)

Applications are eecutable programs that are controlled b% operating s%stem.

2. Applications that use !raphical User Interace(!UI)

$hese applications are used in #indows /nvironment.In ='I! %ou can interact with the

application in graphical mode.

3. Applets

Applets are small eecutable programs that run a web page.

". #er$lets

+ervlets are the programs that are used to etend the functionalit% of the web servers.

%.&ac'ages

Pac*ages are collection of classes that are reused b% applications and applets


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Program-4

@@ Program for learning basics of java language and its librar%.

@@ 4st class

class Bo

double width

double depth

double height

Bo(Bo obj4)

widthCobj4.width

depthCobj4.depth

heightCobj4.height

D

Bo(double w!double d!double h)

widthCwdepthCd

heightCh

D

Bo()

widthC-4

depthC-4

heightC-4

D

double volume( )

return(widthEdepthEheight)

D

D

@@5nd class inheriting features from Bo class

class Bo#eight etends Bo

double mass

Bo#eight(Bo#eight obj5)


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super(obj5)

massCobj5.mass

D

Bo#eight(double w!double d!double h!double m)

super(w!d!h)

massCmD

Bo#eight()

super()

massC-4

D

D

@@6rd class inheriting features from Bo#eight class

class +hipment etends Bo#eight

double cost

+hipment(+hipment obj6)

super(obj6)

costCobj6.cost

D

+hipment(double w!double d!double h!double m!double c)

super(w!d!h!m)

costCc

D

+hipment()

super()

costC-4

D

D

@@main classclass emo+hipment

public static void main(+tring argsFG)

+hipment shipment4Cnew +hipment(5H!6H!7H!?H!4H)

double vol4Cshipment4.volume()

+hipment shipment5Cnew +hipment(shipment4)



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+hipment shipment6Cnew +hipment()


+%stem.out.println(34st ;olume is32vol4)

+%stem.out.println(35nd ;olume is32vol5)

+%stem.out.println(36rd ;olume is32vol6)

+%stem.out.println(34st #eight is32shipment4.mass)

+%stem.out.println(35nd #eight is32shipment5.mass)

+%stem.out.println(36rd #eight is32shipment6.mass)

D

D


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-1(P1(+


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Program-5

@E Program to create an applet with a tetfield and three buttons!when %ou press each button ma*e

some different tet appear in the tetfield.Add a chec*bo to the applet created!capture the

event!and insert different tet into the tetfield.E@

import java.awt.E

import java.awt.event.E

import java.applet.E

@Eapplet codeC3button.java3 heightC35HH3 widthC35HH3 @appletE@

public class button etends Applet implements Action9istener!Item9istener

$etKield t4Button b4!b5!b6

&hec*bo c4!c5!c6

Border9a%out b

Panel p4!p5

@@applet codeCbutton.java widthCLHH heightC6HH @applet

public void init()

bCnew Border9a%out()

t4Cnew $etKield(4H)t4.set/ditable(false)

b4Cnew Button(3&lic* ,ere3)

b5Cnew Button(3ow &lic* ,ere3)

b6Cnew Button(3And &lic* ,ere3)

c4Cnew &hec*bo(3&lic* ,ere3)

c5Cnew &hec*bo(3ow &lic* ,ere3)

c6Cnew &hec*bo(3And &lic* ,ere3)

set9a%out(b)

D

public void start()

p4Cnew Panel()p4.add(t4)

p4.add(b4)

p4.add(b5)

p4.add(b6)


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add(p4!Border9a%out.>$,)

p5Cnew Panel()

p5.add(c4)

p5.add(c5)

p5.add(c6)

add(p5!Border9a%out.+'$,)

b4.addAction9istener(this)



c4.addItem9istener(this)



D

public void actionPerformed(Action/vent e)

if(e.get+ource()CCb4)

t4.set$et(3M3)


t4.set$et(3&ancel3)


t4.set$et(3,elp3)D

public void item+tate&hanged(Item/vent ie)

if(ie.get+ource()CCc4)

t4.set$et(3Kile3)


t4.set$et(3edit3)


t4.set$et(3view3)

D

D


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-1(P1(+


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Program-6

@EProgram to create an applet with a button and a tetfield!write a handle event so that if

the button have been focused!character t%pes into it will appear in tetfieldE@

import java.awt.E


import java.applet.E@Eapplet codeC3focus3 widthC6HH heightC?HH @appletE@

public class focus etends Applet implements Kocus9istener

$etKield t4Button b4!b5

public void init()

t4Cnew $etKield(4H)

b4Cnew Button(3cancel3)

b5Cnew Button(3help3)

t4.set/ditable(false)

add(t4)add(b4)

add(b5)b4.addKocus9istener(this)b5.addKocus9istener(this)

D

public void focus=ained(Kocus/vent e)

if(e.get+ource()CCb4) t4.set$et(3cancel3)

if(e.get+ource()CCb5) t4.set$et(3help3)

Dpublic void focus9ost(Kocus/vent ae)

if(ae.get+ource()CCb4) t4.set$et(33)if(ae.get+ource()CCb5) t4.set$et(33)

D

D


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-1(P1(+


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Program-7

@@Program to show connectivit% of java with database

import java.io.E

import java.s1l.Eclass data

public static void main(+tring arcFG)

tr%

&lass.forame(3sun.jdbc.odbc.Jdbcdbcriver3)

&onnection conCriver"anager.get&onnection(3jdbc8odbc8man3)

Prepared+tatement ps>esult+et rs

while(true)

+%stem.out.println(3NnNn3)

+%stem.out.println(3 4 ;I/# &$A&$+3)

+%stem.out.println(3 5 A &$A&$+3)

+%stem.out.println(3 6 /9/$/ &$A&$+3)+%stem.out.println(3 7 /OI$3)

+%stem.out.print(3 /$/> 0'> &,I&/ 3)ataInput+tream brCnew ataInput+tream(+%stem.in)

+tring aCbr.read9ine()

int a4CInteger.parseInt(a)

switch(a4)

case 48

+tatement stCcon.create+tatement()rsCst.eecuteuer%(3select sno!name!address!tno!emailid from mang3)

+%stem.out.println(3NnNn3)+%stem.out.println(3--------------------------------------3)+%stem.out.println(3+.323Nt323A"/323Nt323A>/++323Nt323$/9.323Nt323/

"AI9 I3)

while(rs.net())

int s4Crs.getInt(4)

+tring s5Crs.get+tring(5)


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+tring s6Crs.get+tring(6)

int s7Crs.getInt(7)

+tring s?Crs.get+tring(?)+%stem.out.println(s423Nt32s523Nt32s623Nt32s723Nt32s?)

Dbrea*case 58

int b4CH

psCcon.prepare+tatement(3select sno from mang3)

rsCps.eecuteuer%()while(rs.net())

b422D

+%stem.out.print(3/$/> A"/ 3)

+tring b5Cbr.read9ine()+%stem.out.print(3/$/> A>/++ 3)

+tring b6Cbr.read9ine()

+%stem.out.print(3/$/> $/9/P,/ '"B/> 3)

+tring b7Cbr.read9ine()int b?CInteger.parseInt(b7)

+%stem.out.print(3/$/> /"AI9 I 3)

+tring bLCbr.read9ine()

psCcon.prepare+tatement(3insert into mang values(Q!Q!Q!Q!Q)3)

ps.setInt(4!b4)

ps.set+tring(5!b5)ps.set+tring(6!b6)

ps.setInt(7!b?)ps.set+tring(?!bL)

ps.eecute'pdate()

con.commit()

+%stem.out.println(3;A9'/+ /$/>/ +'&&/++K'9903)brea*

case 68

psCcon.prepare+tatement(3delete from mang where snoCQ3)+%stem.out.print(3/$/> + $ /9/$/ 3)

int mCInteger.parseInt(br.read9ine())

ps.setInt(4!m)ps.eecute'pdate()

con.commit()

+%stem.out.println(3/9/$/ +'&&/++K'9903)

brea*default8

+%stem.out.println(3/OI$/ +'&&/++K'9903)


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con.close()

+%stem.eit(H)

DD

Dcatch(/ception e)

+%stem.out.println(3/ception &aught3)

D

DD


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-1(P1(+


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Program-?

@EProgram to create an editor screen containing menus!dialog boes etc using javaE@

import java.awt.E


import java.applet.E@Eapplet codeC3ialogemo.java3 heightC35HH3 widthC35HH3 @appletE@

class +ampleialog etends ialog implements Action9istener

+ampleialog (Krame parent!+tring title)

super(parent!title!false)

set9a%out(new Klow9a%out())set+i


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file.add(new "enuItem(3-3))

file.add(item7Cnew "enuItem(3uit3))

mbar.add(file)

"enu editCnew "enu(3/dit3)"enuItem item?!itemL!itemRedit.add(item?Cnew "enuItem(3&ut3))

edit.add(itemLCnew "enuItem(3&op%3))

edit.add(itemRCnew "enuItem(3Paste3))

edit.add(new "enuItem(3-3))

"enu subCnew "enu(3+pecial3!true)

"enuItem itemS!itemT!item4Hsub.add(itemSCnew "enuItem(3Kirst3))

sub.add(itemTCnew "enuItem(3+econd3))

sub.add(item4HCnew "enuItem(3$hird3))edit.add(sub)

debugCnew &hec*bo"enuItem(3ebug3)

edit.add(debug)

testCnew &hec*bo"enuItem(3$esting3)edit.add(test)

mbar.add(edit)

"%"enu,andler handlerCnew "%"enu,andler(this)item4.addAction9istener(handler)

item5.addAction9istener(handler)

item6.addAction9istener(handler)

item7.addAction9istener(handler)item?.addAction9istener(handler)

itemL.addAction9istener(handler)itemR.addAction9istener(handler)

itemS.addAction9istener(handler)

itemT.addAction9istener(handler)

item4H.addAction9istener(handler)debug.addItem9istener(handler)

test.addItem9istener(handler)

"%#indowAdapter adapterCnew "%#indowAdapter(this)add#indow9istener(adapter)

D

public void paint(=raphics g)

g.draw+tring(msg!4H!5HH)

if(debug.get+tate())g.draw+tring(3ebug Is n3!4H!55H)

else


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g.draw+tring(3ebug Is ff3!4H!55H)

if(test.get+tate())

g.draw+tring(3$esting Is n3!4H!57H)else

g.draw+tring(3$esting Is ff3!4H!57H)DD

class "%#indowAdapter etends #indowAdapter

"enuKrame menuKrame

public "%#indowAdapter("enuKrame menuKrame)

this.menuKrameCmenuKrame

D

public void window&losing(#indow/vent we)

menuKrame.dispose()D

D

class "%"enu,andler implements Action9istener!Item9istener

"enuKrame menuKrame

public "%"enu,andler("enuKrame menuKrame)

this.menuKrameCmenuKrame

Dpublic void actionPerformed(Action/vent ae)

+tring msg C 30' +/9/&$/3

+tring arg C (+tring)ae.getAction&ommand()if(arg.e1uals(3ew3))

msg2C3ew3+ampleialog dCnew +ampleialog(menuKrame!3ew

ialogBo3)

d.set;isible(true)D

else if(arg.e1uals(3pen3))

msg2C3pen3

else if(arg.e1uals(3&lose3))msg2C3&lose3

else if(arg.e1uals(3uit3))


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msg2C3uit3

else if(arg.e1uals(3/dit3))

msg2C3/dit3else if(arg.e1uals(3&ut3))

msg2C3&ut3else if(arg.e1uals(3&op%3))msg2C3&op%3

else if(arg.e1uals(3Paste3))

msg2C3Paste3

else if(arg.e1uals(3Kirst3))msg2C3Kirst3

else if(arg.e1uals(3+econd3))

msg2C3+econd3else if(arg.e1uals(3$hird3))

msg2C3$hird3

else if(arg.e1uals(3ebug3))msg2C3ebug3

else if(arg.e1uals(3$esting3))

msg2C3$esting3

menuKrame.msgCmsgmenuKrame.repaint()

D

public void item+tate&hanged(Item/vent ie)

menuKrame.repaint()

D

Dpublic class ialogemo etends Applet

Krame f

public void init()

fCnew "enuKrame(3"enu emo3)int widthCInteger.parseInt(getParameter(3width3))

int heightCInteger.parseInt(getParameter(3height3))

set+i


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f.set;isible(false)

D

D

-1(P1(+


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import java.swing.E

import java.awt.Eimport java.net.Eimport java.awt.event.E

import java.io.E

@Eapplet codeC3&ustomerApplet.java3 heightC35HH3 widthC35HH3 @appletE@

class &ustomer etends bject implements java.io.+eriali$,#/+$

gbc.gridC4

gbc.grid%C?

g4.set&onstraints(label&ustame!gbc)


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panelbject.add(label&ustame)

gbc.anchorC=ridBag&onstraints.>$,#/+$

gbc.gridC7

gbc.grid%C?

g4.set&onstraints(tet&ustame!gbc)

panelbject.add(tet&ustame)


gbc.gridC4

gbc.grid%CT

g4.set&onstraints(label&ustPassword!gbc)

panelbject.add(label&ustPassword)


gbc.gridC7

gbc.grid%CT

g4.set&onstraints(tet&ustPassword!gbc)

panelbject.add(tet&ustPassword)


gbc.gridC5

gbc.grid%C46

g4.set&onstraints(button9ogin!gbc)

panelbject.add(button9ogin)

9oginAction loginre1uestCnew 9oginAction()

button9ogin.addAction9istener(loginre1uest)

D

class 9oginAction implements Action9istener

public void actionPerformed(Action/vent evt)

bject objCevt.get+ource()

if(objCCbutton9ogin)

&ustomer dataCnew &ustomer()data.custameCtet&ustame.get$et()

data.custPasswordCnew +tring(tet&ustPassword.getPassword())


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tr%

+oc*et to+erver

to+erverCnew +oc*et(34T5.4LS.H.43!4HH4)bjectutput+tream stream$o+erverCnewbjectutput+tream(to+erver.getutput+tream())

stream$o+erver.writebject((&ustomer )data)

Buffered>eader from+erverCnew Buffered>eader(new

Input+tream>eader(to+erver.getInput+tream()))+tring statusCfrom+erver.read9ine()

getApplet&ontet().show+tatus(status)

stream$o+erver.close()from+erver.close()

D

catch(Invalid&lass/ception e)

getApplet&ontet().show+tatus(3$he &ustomer ame is ;alid32e)

D

catch(ot+eriali


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Program-L

@@Program to show Java etwor*ing-Java +oc*ets and >"I


import java.io.E

import java.net.Eclass &ustomer implements +eriali


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protected +oc*et net&lient

protected bjectInput+tream from&lient

protected Print+tream to&lientpublic &onnection(+oc*et client)

net&lientCclienttr% from&lientCnew bjectInput+tream(net&lient.getInput+tream())

to&lientCnew Print+tream(net&lient.getutput+tream())

D

catch(I/ception e) tr%

net&lient.close()

Dcatch(I/ception e4)

+%stem.err.println(3unable to set up streams32e4)

returnD

D

this.start()

Dpublic void run()

&ustomer client"essage

tr% for()

client"essageC(&ustomer)from&lient.readbject()

if(client"essageCCnull)

brea*to&lient.println(3>eceived

from832client"essage.custame)D

D

catch(I/ception e)

Dcatch(&lassotKound/ception e4)

+%stem.out.println(3/rror in reading object32e4)

Dfinall%

tr%

net&lient.close()D

catch(I/ception e)

D

DD

D


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import java.swing.E

import java.awt.Eimport java.net.Eimport java.awt.event.E

import java.io.E

@Eapplet codeC3&ustomerApplet.java3 heightC35HH3 widthC35HH3 @appletE@

class &ustomer etends bject implements java.io.+eriali$,#/+$

gbc.gridC4

gbc.grid%C?

g4.set&onstraints(label&ustame!gbc)


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panelbject.add(label&ustame)


gbc.gridC7

gbc.grid%C?

g4.set&onstraints(tet&ustame!gbc)

panelbject.add(tet&ustame)


gbc.gridC4

gbc.grid%CT

g4.set&onstraints(label&ustPassword!gbc)

panelbject.add(label&ustPassword)


gbc.gridC7

gbc.grid%CT

g4.set&onstraints(tet&ustPassword!gbc)

panelbject.add(tet&ustPassword)


gbc.gridC5

gbc.grid%C46

g4.set&onstraints(button9ogin!gbc)

panelbject.add(button9ogin)

9oginAction loginre1uestCnew 9oginAction()

button9ogin.addAction9istener(loginre1uest)

D

class 9oginAction implements Action9istener

public void actionPerformed(Action/vent evt)

bject objCevt.get+ource()

if(objCCbutton9ogin)

&ustomer dataCnew &ustomer()data.custameCtet&ustame.get$et()

data.custPasswordCnew +tring(tet&ustPassword.getPassword())


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tr%

+oc*et to+erver

to+erverCnew +oc*et(34T5.4LS.H.43!4HH4)bjectutput+tream stream$o+erverCnewbjectutput+tream(to+erver.getutput+tream())

stream$o+erver.writebject((&ustomer )data)

Buffered>eader from+erverCnew Buffered>eader(new

Input+tream>eader(to+erver.getInput+tream()))+tring statusCfrom+erver.read9ine()

getApplet&ontet().show+tatus(status)

stream$o+erver.close()from+erver.close()

D

catch(Invalid&lass/ception e)

getApplet&ontet().show+tatus(3$he &ustomer ame is ;alid32e)

D

catch(ot+eriali


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-1(P1(+


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Program-R

@EProgram to develop a servlet that get invo*ed when a form on a web page in ,$"9 is

submitted.&reate a coo*ie object and enter@ displa% value for that coo*ie.E@

import java.io.E

import java.servlet.E

import java.servlet.http.Epublic class ,ello etends ,ttp+ervlet

public void do=et(,ttp+ervlet>/1uest re1!,ttp+ervlet>esponse res)throws

+ervlet/ception!I/ceptionres.set&ontent$%pe(3$et@,tml3)

Printwriter outCres.get#riter()

3html Nn323headtitle,ello@title@head Nn32

3bod% bgcolorC33

out.println(3,ello3)out.println(3@bod%@html3)

D

Date post:	25-Feb-2018
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Upload:	sonakshi-khurana
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