Usage of Java in Selenium Video Lecture | Selenium Test Automation:Tutorial for Beginners (English) - Software Testing

Java Java for selenium sumitra tell me
first already we discussed Java is a
programming language as well as software
platform isn't it Java Java can be used
for two different purposes what are the
two different purposes Sun Java can be
used for two different purposes okay
one is programming as programming
language
another is platform software platform C
computer platforms two types hardware
platform software platform Java provides
software platform C if you want to
develop software applications you can
use Java as programming language second
one as platform what is the
functionality of platform son-in so what
is the functionality of flatform
functionality of programming purpose of
programming language to develop software
applications okay test automation
secondary primary purpose to develop
software applications what is the
purpose of software platform so like I
mean it can be run on different
platforms Windows is different case
platform independent concept that is
different Ravindra platform software
platform Java is a okay me maybe it is
like you know it's a software platform
interesting so I think it's a platform
in that there is a two platforms phone
is like Windows servers the
is what I said Windows Linux okay see
observe say platform-independent concept
is different Windows Linux or UNIX
flowers that that is different okay
windows also platform it provides
environment for running the applications
software applications okay here Java
platform means you know Java programming
language Java as programming language
programming language you know the
purpose through develop to develop
software applications software
applications okay
match Java as software platform software
okay I think this it we are using Java
to like me to create our programs not
any other language just like Java has no
to provide to provide runtime to provide
runtime environment to provide runtime
environment suppose we have on java
application that application developer
in java want to deploy in our computer
for production for that java runtime
environment
required runtime means required in iran
meant for running the application it in
this point yes
suppose your application developer in
java and oracle first you need to
provide runtime for running that
application
you need to install Java Oracle then
that application can be run on your
computer that is a long time
suppose dotnet dotnet provides packard
runtime suppose vb if you develop any
application in vb you no need to provide
a runtime it provides back to the
runtime environment also available in
the application but for java and other
applications one time required okay here
you can hear two terms jdk Jawad
developers java development kit jdk for
developing software applications we need
to install jdk for accessing our using
java applications we need to install JRE
what is JRE
java runtime environment but jdk also
includes theory oh yes JDK includes a
bre JRE and JVM give him this one also
JVM java virtual what is that one
machine mission virtual machine are here
Jerry includes JV a JVM ok this is
technical metal C JDK includes JRE and
JVM jdk for developing development as
well as execution running the
application here JRE purpose only
running the application not developing
the code are modifying the code ok as
platform you need to install JRE as
development as programming language you
need to install jdk ok forget what is
our purpose here
they are er JDK our program as
programming language or as platform tion
programming language programming
language why we develop test cases okay
yes we have not only executing test
cases development also test the case
development tester development so this
one okay now as part of this uh okay
java programming language okay say here
are two types of purpose as programming
language and as just the software
platform
okay next Java has three parts this is
referred next to technical word is three
additions three additions we already
discussed this one aha Leah tell me Java
has three ports this is rough fourth
three additions is technical term under
documentation term tell me what are the
three additions of java jdk jdk is not
addition that is software Java
development kit
what is your code forums transmission
code
Ravindra standard editions Java standard
edition which is core Java standard
edition this public term is core Java
but Sun Microsystems didn't use this
term in their documentation core Java is
not official term official term is Java
standard edition but public most of the
people using core Java okay you can use
core Java no issue but official
Java standard edition here earlier it
was world world names get to hear CDs
Java 2 standard edition this is world
name new name is Java standard edition
next second one continue ravindra I
forget second
yeah interpret Java Enterprise Edition
Java Enterprise Edition Enterprise
Edition this one public name advanced
advanced java advanced java world name
son world name
j48 ee next another edition you have a
micro Edition Java micro Edition is for
small devices like mobiles micro Edition
world name is j2me
okay for enterprise edition our micro
Edition standard edition is the base
standard edition is mandatory okay for
our test automation observe Ilya
advanced Java not required micro Edition
not required what is this one Java
standard initial core Java isn't it yes
next here what we will learn just
recollect first what is that one Java
environments a moment this is concept
requirement pre requisite Java
environment setup it depends on it may
vary from one operating environment to
another software also different but if
you create byte code that can be
executed on different platforms also
getting this point on is C is not
platform-independent
c++ is not platform intended but they
support multiple operating systems
suppose you write C code on Windows
right compile and execute
next UNIX you write C code on UNIX write
compile and execute but Java not like
that platform independent you write Java
code in Windows environment and compile
it will create it will provide bytecode
you you can carry that bytecode to other
environments you can execute that
bytecode in UNIX or Linux UNIX flavahz
Macintosh etc create Java code in one
environment one operating environment it
provides bytecode you can execute that
bytecode in the same environment or in
other operating environment that's why
Java is
platform-independent getting yes okay
Java environment setup now Balakrishna
simple question why we need to set up in
our Sumitra not only you are not going
to running any software applications in
your test automation yes you are going
to develop test cases and execute ok
execution all also there but development
is primary development and execution but
you are not going to only running the
software applications ok yes sir yes yes
yes
see improvement are you required to
create and execute execute Java programs
to create and execute Java programs this
is general purpose in our test
automation to create and execute test
scripts passed script
Oh connection purpose of Java an
arraignment setup
yes sir associate test scripts is the
same as Java program buses like nano our
program this is global you say global
usage in our scenario program means test
script yes in like a minute in selenium
if you are right as like the case but in
in our tester scripts we use Java code
okay in this scenario only program and
best script synonyms but not in global
scenario letting this point yes sir I in
our test automation scenario program
means test script but in the general
scenario program means program only
their program different descriptor
friend but in this scenario test
automation scenario program means test
the script art as the case we use Java
code for writing our test cases our test
scripts test the case test script
synonyms but in the of T we use tests
permit test
no test the case termini of T test our
test script here in selenium test the
case our tester script
okay now say yes like I mean in manual
test casing as cases in testing we only
have test cases and in automation test
cases or describes just a minute
manual testing manual testing we use
term test case next ufp formerly qtp
technology varies from technology very
varies from one environment to another
but concept said nology varies concept
said that mean ology varies from one
environment to another here
pest observe Ravindra you have some
knowledge knowledge our experience in
Europe Tina here we use permit Astana
rotational discreet chaste AHA but their
official term is test best are you can
use best script next year selenium
selenium test the case our test script
Okinawa son yes sir so let them in any
program in selenium written in salina
selenium weather in Java or Python or
can be called is the script only our
test the case you can call test a case
also yeah that is what I was asking okay
good coding or Python parallel moody
hypertext preprocessor means PHP any
supported language any code called as
test the script in our selenium our test
the case
kokaina okay okay so but in general
scenario suppose developers use program
karma that is global hub they don't use
test script in our scenario tester
scripted okay okay so like I mean in
many jobs like you know as I see that
the requirement is much no scripting so
that means the person must know like you
know how to code out only how to code
okay okay
this is MV R on what is happen in Daoist
annotation first Java environment setup
next come to Java language elements and
whoops concepts okay come to language
elements vijaya come to language
elements what will what we discussed
common promising in Java and one more
thing
comments optional writing comments is
best practice but it is not a mandatory
it is not rule so not syntax fool it is
just the standard best practice and one
more thing now we are going to discuss
usage also then it tell me where we use
comments comments are useful or not in
our test automation forget about general
purpose use documentation of our test
in our test cases we use comments you
can arrive to test the case headers
method headers and it for explaining
complex logic you can use comments
useful next second one continue data
types in Java data types useful are not
you know a test automation they we must
specify the data type otherwise that is
syntax rule that is syntax error it will
show syntax error you must specify C in
our test automation we work with
different types of data some are spring
type data example customer name city
name etc some are integer type data next
to floating-point values etc so data
types important next continue modifiers
okay so the most important data type for
our test automation is string right yes
okay why why most important data type in
test automation spring why because like
you know test automation is based on
objects and from objects we read the
data is ready whenever we read data then
computer program considers not only Java
any any program computer program can
assess the data as string type data in
order to perform mathematical
calculations we need to convert the data
for numbers if it is spring type data we
can use the as it is okay modifiers how
what what is the how the date old
I access modifiers
most of the time videos for the access
most of the time we use we don't use
private etc we expect public only so you
know need to concentrate on other
modifiers like protected default private
say 99% hundred percent we use public
access modifier
what about non access modifiers not a
static static we use for creating static
variables means class level variables
and static methods next abstract also
limited use or no use next final
modifier is there now yes we use final
modifiers are finalizing finalizing the
implementation of variables our methods
are okay class has not required methods
method finalization also not required
just a variable finalization that is
variable final link means constant next
okay totally sushma continue next Java
language elements are fundamentals of
Java various modifiers ok variables for
storing the data temporally okay
temporary data for storing temporary
data in a controller program is not
permanent data which stores in RAM only
okay variables are useful or not in our
test automation most of the time we
capture data from application objects
and store into variable then later we we
compare the data very very
patience see variables are useful okay
next next operators operators useful or
not useful yes we use operators in
mathematical operations and logical
operation automatical and logical
operations and comparison operations
comparison in verification points we
compare expected with actual so
operators also important next just a
minute continuous on the after of
Frizzles conditional statements
statements okay that is what is the flow
control means flow control flow control
are you can say control flow control
flow statements we have three types of
control flow statements list out
conditional statements conditional
statements loop statements loop
statements next odd one
I think vendrick an answer can tell that
third one ravine de
Symmetra conditional statements looping
statements next switch also conditional
statement sushma nested conditional
branch branching statements see we have
three branching statements now what are
they break continue written written we
use in methods okay now tell me
continuous on purpose of conditional
statements prefers like in the
programming or programming person
perceptive only test automation okay it
is for inserting verification points
insert verification points okay next and
for error handling also
but primary purpose is to insert
verification points next looping
you Pinocchio for test automation it's
not like for programming's surveys
asking for a test or a budget you are
the execution testing we repeat the code
now we repeat the test case now okay I I
mean I I knew about the that looping
statements are used for like repetitive
execution test automation is the same
thing next erase what is the purpose of
erase if you want say erase limited use
in our test automation if you want to
read excel file data for example for
that you can use erase text file data
general variables enough next continue
or son after erase input/output
operations nothing before that we
discussed the string non string handling
string handling okay strings things are
not variables string is object in Java
we we can conduct different types of
operations on strings
Impa is it important or not for our
testator missions very important very
important strings is very important next
input and output operations okay output
operation okay sometimes we need to
check the test case our we need to
display the display the output on
console on the console output okay what
about the inputs on air we use input in
our test testing say in then usually we
provide input data in our test cases
only now
yes sir suppose yasser ID within
double-quotes some ABCD password some
XYZ like suppose if it is a data-driven
testing we use texture file or excel
file as the resource then we can read
the data then where we use the input
sir I think like I mean because test
automation is usually based on object so
we want to read any input from an object
in that case may be okay if you read if
you read any object for that it is that
inputs to a input object not required
now we discussed the scanner object now
that object is not required for reading
any data from data from any object or
any file isn't it okay so if you if you
are reading in a suppose just a minute I
want to read data from here it box for
that you take spring some username read
box he was a string some variable name
equal to you write a selenium webdriver
webdriver code then it will read no
input object suppose if you want to read
text files yesterday you read the data
now in the last class are lost before
class yes sir but no scanner object
required for reading data from
application objects are files then where
we use input operation output okay
regularly we use output operations
observed just a minute
observe I will so arm no sir I am saying
may be like you know in a few classes I
will be able to but before that I will
show on small example
well sir I think the scanner is like
there it is a Java Justin class like
Java defined just suppose it's after all
observe Mitra this is webform
registration form for Gmail application
nowadays most of the applications
providing this field capture field it is
this capture field capture field will be
it will show some unique letters or
numbers now we have to rewrite them on
the expected text box so that it will
confirm our registrations just a minute
just a minute you can find capture
fields in the capture fields now in our
web you know nowadays most of the
enterprise applications providing this
capture field now son I I don't know
about this thing I don't know capture
field you don't know no sir verification
code capture means verification code
just a minute it's like the last to
enter the numbers which are in happen at
me just give me two minutes I will
explain
just a minute
it is not showing capture fill in this
scenario today is not showing capture
means verification code it is most of
the applications okay so I got it I
think is like you know the for digital
3d G my code the airflow who'd you kill
generate this definite sign in just them
out here I use it many times
here also he's not asking okay capture
means verification code say nowadays
most of the commercial web applications
asking caption ah verification code just
a minute I have good example suppose
IRCTC observe now observe son is here II
suppose I want to check this login
functionality I want to verify this
login functionality here what are the
fields user ID password okay I can reach
that suppose I have user ID
I have password what about this CAPTCHA
CAPTCHA is dynamic na yes sir you cannot
provide that value in test script not
test script or test kazna you must read
that data while execution only isn't it
yes sir suppose I have fixity username
I already registered suppose GC rate is
seven password GLD nine three eight
what about captcha first I I need to
read this one
what is this one suppose you you know in
QP l u9 q PL q PL
then click login now it is accepting now
you sign out if you want to if you want
to provide data for capture capture
means verification code it checks
whether the user is human user are not
for providing you have a service we
cannot pradesh these fields are very
important in public web applications so
if you want to check this type of data
this type of fields you must provide
data during test case execution only we
cannot provide before test case
execution isn't it yes sir
suppose for user ID and password you can
prepare data in test case now yes and I
mean this one is capture field is also
an object right yes capture field also
hitbox yeah dynamic yes
say you're sorry I D input data static
means fix it a password fix it is
capture not fix it dynamically you
cannot provide dynamic data in test
cases while execution only how to read
for that scanner object required not
scanner object or any supported object
okay come to mainstream input reading
input also sometimes mandatory in our
test automation getting sushma yes any
confusion you are saying them in dull
mode next continue Balakrishna not
attended some classes AHA liya continue
string handling input and output
operations next then we have predefined
user define and predefined is a
continuation actually immediate legend
to explain that one this is continuation
file handling is
just as some company our related topic
file handling in our test automation
file handling is required of not rehalia
yes it is generally like if you like if
you want to take data from the test data
for data driven testing for that
generally we use excel file our extra
texture file etc for that file handling
concept required isn't it yes sir
next continue next you use a different
methods here we have two types of
methods
what are they first one predefined it is
we use predefined methods in our test
cases suppose if you want to compare two
strings you can use string dot compared
to our string dot equals excetera
methods pre pre defined methods next
user-defined methods see in our test
automation for writing test cases we
create reusable components for creating
reusable components we use user-defined
methods suppose we have three test cases
one is he had product
another is yard currency in e-commerce
application online shopping application
for example we are going to discuss that
project suppose I add add product ad
vendor he had currency three test cases
are there for all these three test cases
login and logout
quiet first login then I had and are
then log out next login ad product
logout next login ad currency logout the
end to end this scenario for all these
the three test cases loggin is reusable
component logout also we can make login
and logout as user-defined methods and
we call wherever required so
user-defined methods also useful
following the concept Balakrishna yes
sir
what about you Ravindra yes sir okay
continue
aha Lea after methods we have this oops
concept search after methods one
important concept you forgot exception
handling we discussed now exception
exception handling we use use exception
handling in our test cases or test
scripts use or not yes sir yes sir we do
yes more useful say for exceptional
handling you use it for handling syntax
errors our runtime errors Ahalya say
runtime errors runtime arson attack
server so we can rectify it will show
guidance and then otherwise you cannot
execute the program
if syntax errors are there no use of
execution isn't it yes sir you know
locater runtime errors we use exception
handling okay exception handling is
important one next come to
object-oriented concepts Java whoops
here we have four fundamentals of suit
see some some people in training
programs explain what is object what is
class what is all our commander this
whoops
but fundamentals of Hoops are four
fundamentals only some are saying
different different topics method
overloading one topic method overriding
one topic but method overloading and
method overriding both our commander
polymorphism okay we have four
fundamental sauce object-oriented
programming what are the four
fundamentals inheritance inheritance
inheritance
now tell me Sean inheritance is it
useful or not in our test automation I
think is limited use limited use not
hundred percent limited use sometimes
suppose whenever use reusable components
for writing test cases sometimes you may
use inheritance okay next polymorphism
polymorphism sushma polymorphisms
committed use say if you want to create
yahwah's are differ user-defined methods
reusable components it's same name
suppose login login method with
parameters and without parameters to
components that time you can use this
polymorphism concept but limited use
next continue Galia next abstraction
abstraction what about the usage of
abstraction in pest automation no sir no
you say oh you only use it in developing
only in development m capsule
what about encapsulation no using tech
solutions estimation see this is about
Java for selenium conclusion any queries
Balakrishna conclusion res queries son
thinking sir what to ask
okay see after the class also you can
mail me know