Selenium Tutorial 5: Java Programming for Selenium Video Lecture | Selenium Test Automation:Tutorial for Beginners (English) - Software Testing

selenium class 5 Java for selenium ok
say we already discussed him
selenium supports six programming
environments for writing programs Java C
sharp Perl PHP Python under Ruby here we
are selecting Java ok first just a
minute Java for selenium in this chapter
first a topic why Java why Java for
selenium means why can't we choose other
languages yes you can choose any
language but some reasons are there for
selecting Java for selenium C selenium
written in Java selenium written in Java
it doesn't mean that Java only more
compatible with selenium we can use
other supported languages also next good
support for selenium with Java you can
get more help documents and the code
implementations from Internet why
majority of selenium tests us nearly 77%
using Java so knowledge sharing is very
easy
next Java is platform independent
language we can use it on any operating
environment say selenium selenium
written in Java C selenium also software
developed in Java for example oracle rdb
ms varietal developed in c language for
example MS office MS office developed in
VB and VC plus plus for example a of T
tool G of T tool developed in dart net
technology V C++ dot 10th selenium
developed in Java we of T developed in
dotnet sorry you have to develop in
dotnet selenium developed in Java
LM formerly Quality Center developed in
j2ee Java 2 Enterprise Edition
technology loadrunner
dalla princey language okay selenium
written in Java it does not mean it does
not mean that Java only Java only more
compatible more compatible with selenium
we can use we can use other supported
languages also other supported languages
also next point important point if we
use Java we can get good support say
good support this mr. ah it doesn't mean
that the Java only more compatible with
selenium or it does mean only more
compatible with selenium sir okay okay
this one
okay now hello hello okay now yeah whoa
kisser okay I forgot her mistaken yeah
it does mean that Java only more
compatible with selenium we can't we can
use other supported languages also next
good support good support for selenium
with Java good support for selenium with
Java you can go you can get more helpful
documents and implementations code
implementations from Internet say you
can get more help documentation more
help documentation and implementations
code implementations from internet from
Internet and from other resources next a
majority of selenium testers majority
majority of selenium testers nearly
seventy seven percent nearly seventy
seven percent
using Java so knowledge sharing is very
easy knowledge sharing is very easy next
one more reason jaw is platform
independent language opera also platform
independent Python also platform
independent
but c-sharp not platform independent
Java is platform independent platform
independent language
we can use Java on any operating
environment we can use Java on any
operating environment operating
environment see these are the reasons
that why we select Java for selenium can
you tell me Ramon why Java so selenium
written in Java so this means it is more
comfortable
selenium are not more compared to see
other language is also compatible yes
sir
but this will move over all mocha
compatible not the thing other language
also having same compatibility with
selenium okay but they are written in
Java native language Java so some
environmental advantages are there but
compatibility point of view all
supported languages are same ah okay we
have a good support with selenium can
get more help additional and core
implementation from interplay own
evolution from other resources our next
the majority of selenium tests are used
using Java as we said nearly seventy
seven percent ok so another sharing will
be very easy ok button finally Java is a
platform independent language so we can
use Java on adding operating environment
ok good
ok see who is the Padmanabha hello
Padmanabha
hello hello hello
tell me it's materia that's my husband's
ID okay we'll jump into his ID you Gia
yeah Europeans use same names for
classes otherwise I will confuse me yes
okay cool cool cool okay good
see Krishna Madhuri okay next
okay Java we selected Java for selenium
how much Java is required Java is a huge
environment it is a portion how much
Java is required okay see how much Java
just a minute
how much Java is required for selenium
same core Java core Java is enough
advanced of Java not required core Java
is enough advanced Java is not required
Java fundamentals and object-oriented
programming concepts are required okay
see for test automation for test
automation using Java C I will introduce
Java in the next class what is Java how
to configure Java etc this is only
roadmap this is only roadmap for Java
for selenium today I will provide just
to overview on Java tomorrow onwards we
will discuss each and every concept in
detailed manner see for test for test
automation using selenium using selenium
core Java is sufficient core Java is
sufficient advanced java advanced or
java is not required
next what are the core java concepts
Java fundamentals Java fundamentals and
whoops concepts object-oriented
programming system whoops concepts are
required
Java is object oriented programming
system for example C language structured
programming in C language no object
concept C++ object oriented programming
system rebe script
wewe script is object based language
object based language Java object
oriented C++ object oriented C language
structured programming C object oriented
programming object-oriented programming
system next ok core Java is enough for
our test automation advanced Java not
required means server-side programming
not required we can segregate core Java
into two categories see we can segregate
we can segregate Java for selenium Java
for selenium into two categories
first one is Java basics are Java
fundamentals Java fundamentals next Java
object oriented programming concepts
hoops concepts C Akana
a pretty how much Java is required for
selenium test automation Yakuza weighs
just required core Java England wide
advanced Raja was not required okay say
Java fundamentals and Java hoops
concepts see I will list out the all
required concepts tomorrow onwards we
will discuss each and every concept in
detailed manner see first Java basics
are fundamentals see this roadmap not
only for Java you take any programming
language or scripting language eighty
percent skeleton same syntax may vary
from one language to another some
features may vary from one language to
another
but eighty percent a skeleton same if
you learn any programming language
definitely you can easily learn any
other languages see learning first first
programming language is some difficult
after learning one programming language
you can learn me any other programming
language easily why eighty percent
skeleton same syntax may vary from one
language to another some features may
vary from one language to another for
example
in C language no object concept but in
Java object concept is their object is
there in Java
everything is object for example VB
script in VB script no explicit
declaration of datatypes but in C and
Java languages explicit declaration of
data types in VB script arrays also
variables array variables but in Java
array also object in Java
everything is object except primitive
datatypes
okay c fundamentals comments comments in
java c why I am writing comments first
you can write first line as comment
middle line as comment or last line as
comment no restrictions no limitations
for writing comments and one more thing
in computer programming two important
things one is standard one is rule
another is standard rule we must follow
suppose in Java after declaring the
variable only you can use before
declaring variable you cannot use that
variable that is rule syntax rule
suppose writing meaningful comments
standard best practice if you do not
write comments no issues a program will
execute you can get correct output but
program is not readable C rules
standards rules we must follow standards
best practice okay comments in Java you
can find comments in all programming
languages and scripting languages not
only in Java syntax may vary from one
language to another
next srivalli purpose of comments in
computer
programming just to brief idea tomorrow
onwards we'll discuss each and every
concept in detailed manner I will show
practical examples also tomorrow only
roadmap roadmap for our program Java for
selenium war we are tell me purpose of
comments in computer programming
srivalli can you me yes yes I can hear
you best understanding of the to code
code best understanding of the code good
that is primary purpose next one
secondary purpose also there non
executable code we can put for
conformance good good
say primary purpose to make the code
readable or understandable next to make
the code to make the code disabled from
execution disabled from execution
suppose we have hundred lines of code
don't want to execute all underlines in
this iteration you can suppose I want to
execute only 50 lines of code you can
make we can make remaining 50 lines as
comment whenever we want to execute all
lines of code you can uncomment that
comment block she to make the code
readable and to make the code disabled
from execution okay syntax and where we
use comments that we will discuss in
comments in Java chapter Java supports
single line comment and multiple lines
comments say Java supports
line comment single line comment and
multiple multiple lines commented see
this is a brief introduction about
comments next say follow the sequence
data types data types in Java data types
in Java Sri Lakshmi can you tell me what
is data type give one or two examples
general examples data type in Java
not only Java data types available in
all programming and scripting languages
integer characters ah integer characters
float floating point values decimal
values natural boolean boolean ixora
okay what is data type data that means
for all character all characters I think
all characters will be there will be
there basically confusing okay see a
data type is a classification of the
data a data type is a classification of
the data that a variable or object can
hold in computer programming see a data
type is a classification is a
classification of of the type of data
type of data
variable variable or object or object
can hold can hold in computer
programming in computer programming
example example integers integers
characters characters next spring's next
float floating-point values next boolean
logical result true all false like
logical exedra next Java supports two
types of data types two types of data
types or you can say two categories of
data types see Java supports two
categories of data types just I will
list out categories only in data type
chapter I will explain what are the
primitive data types and how to declare
what are the reference you reference
data types and how to use etc see two
types primitive primitive data types
next
reference data types
reference data types primitive data
types next reference data types this is
a brief introduction about data types in
Java next tell me pretty what we have to
discuss sequence is there four
fundamentals computer front of a
computer fundamentals then what we have
to discuss Madhavi can you tell me not
only in Java this the sequences for
maximum programming and scripting
languages Sri Lakshmi eating of the
environment forum sitting at the
environment setting of the environment
is not Java programming feature isn't it
that is not Java programming feature
mother we told modifiers what about your
mic mother we try to use mic from at
least from tomorrow modifiers okay Java
modifiers observe pretty setting up Java
environment that is not Java programming
feature that is required setup for
creating and executing Java programs
required environment for creating means
writing and executing Java programs that
not comes under Java programming
features okay now in a conclusion nurse
is thinking welcome
say modifiers see modifiers are used to
set access levels see they modified
modifiers they modify classes variables
and methods etc modifiers are used to
modifiers are used to set access access
levels for classes variables next
methods etc see modifiers modifying
classes variables methods etc say we
have two categories of modifiers in Java
two types of modifiers in Java not two
modifiers two types of modifiers
what are they first one just a minute
okay first one access modifiers access
modifiers next non access non access
modifiers
co-league can you tell me access
modifiers one or two examples for access
modifiers to rate thought why wait
public protected protected okay we have
four access modifiers in Java default
default public private and protected
protected next non access modifiers any
ideas relax me non access modifiers in
Java no idea sir okay cool
no problem see static static final nach
abstract abstract next synchronized
synchronized etc
say Java modifiers next Rahman can I
tell me the programming fundamental
sequence variables good variables see
variables in Java what is variable Vijay
what is variable see variable global
global comes that you can find variables
in all programming languages and
scripting languages not only in Java
what is variable Vidya Krishna Chaitanya
Christmas hi Tonya what is variable it
is a name given to a memory location to
store data good who is telling Krishna a
good good
see a named memory location to store
temporary data within a program see a
neighborhood memory location a name of
memory location to store temporary data
not permanent data temporary data
variable store in primary memory not in
secondary memory primary memory means
Ram secondary memory means hard disk
drive Plus this one cd-rom pendrive that
is USB Drive etcetera variable store in
primary memory RAM or EAM random access
memory to store temporary data within a
program
within a program okay how to declare
variables how to use variables next
variable naming restrictions next scope
of variables that we will discuss in
variables chapter now just a brief idea
we have three types of variables in Java
see three types three types of variables
in Java Kamala any idea three types of
variables in Java remember
Madhavi any idea module okay
local instance see you try to use Mike
mother at least by tomorrow
okay okay mother okay see local
variables next instance variables
instance variables next class variables
are static variables class are static
variables okay no pretty variables in
Java just brief introduction easy okay
next next programming sequence say Laxmi
and next what we have to discuss
functions or methods or conditional
statements or loop statements are any
other no idea sir okay Rajamani
operators good operators we use
operators in conditional and loop
statements also our operators can be
used individually in normal statements
also you can is operators in normal
statements also we can use operators and
in flow control statements also we use
operators operators in Java C what are
operators operators are used to perform
mathematical comparison and logical
operations see operators are used to
perform mathematical mathematical next
comparison and logical operations
see we have some categories of operators
in Java categories of operators see
categories of operators are thematic
automatic automatic operators next
relational operators relational
operators next just a minute
bitwise operators bitwise operators next
just a minute automatic operators
relational operators next bitwise
operators next logical operators logical
operators next assignment operators
assignment operators next miscellaneous
operators miscellaneous
see tell me pretty
oh no compare sorry sir there is no
conversion operat comparison operators
what is the relation itself is compared
Oh tell me pretty what our operators
under categories of operators in Java
yeah automatic operators Oh relation is
operated Oh bitwise operator logical
operators assignment operators oh and
last one miss something is there an idea
miscellaneous okay miscellaneous
operators see short form I wrote
miscellaneous other than about next flow
control C flow control statements you
take any programming language or
scripting language you can find minimum
two types of flow control statements
Rajamani two types of flow control
statements in computer programming Ramon
what are the two types of flow control
ah this is the human questions in our
tlemen could you please give me some
example for bitwise operators and
assignment operators please this is only
road map in operators chapter I will
explain all categories with examples
okay this is only a road map just to
indexing the concepts what we have to
learn just overview say here I am just
providing definition level and the
classifications only but I am not
providing any practical examples say in
operators chapter I will I will show how
to use operators
syntax operators under syntax etc okay
na ot sir thank you Murugan
ah continue Mohammed Ramon so what is
okay okay
Sri Lakshmi flow control statements in
computer programming you take any
programming language or scripting
language you can find minimum to two
types of flow control what are the two
types of flow control come along
Kamala if state if statements if
statement is another if statement is
subcategory two types of flow control is
conditional yes
conditional conditional statements loop
statement good
okay mother a mother also typed
okay loop statements say first I am
taking conditional statements
conditional statements say in Java we
have two types of conditional statements
in C language also two types in VB
script also two types in VB script
if statement select a case statement in
C language if statement switch case
statement in Java also two types of
statements one is if statement another
switch statement switch statement say
remember this is only this is just a
road map just to overview on Java
tomorrow onwards we will discuss each
and every concept in detailed manner I
will show practical examples for every
concept see switch statement okay two
types of statements see some elaboration
types of conditions just idea see logic
is many important important thing types
of conditions see in computer
programming not only in Java in computer
programming we have three types of
conditions single condition single
condition examples I will show in
conditional statements chapter next
compound condition are multi condition
compound condition or multi condition
next nested condition nested condition
next another classification in single
condition you can use positive condition
and negative condition negative
condition positive condition negative
condition in compound also in nested
also you can use positive and negative
conditions next usage of conditional
statements usage usage of
conditional statements usage of
conditional statements okay say we have
two types of conditional statements we
have a five to six different types of
usage see first usage executing a block
of statements when condition is true
execute a block of statements block of
statements when condition is true this
is one way condition no else part no
otherwise one way condition next two way
condition execute a block of statements
when condition is true otherwise execute
another block of statements otherwise
means else otherwise execute another
block another block of statements
when condition is false not required
execute another block of statements next
decide among several alternates not only
see in second usage only two alternates
either first part or else part next in
this third one several alternates you
can choose any one alternate else if
structure decide among several
alternates another name of the structure
LC next execute a block of statements
when more than one condition is true
three conditions four conditions five
conditions minimum more than one
condition c execute a block of
statements when more than one
condition is true and you can write l
spot also in this fourth use fourth
syntax and in third also you can use L
spot executing a block of statements
when more than one condition is true
another name of the structure nested if
nested-if
next last one
decide among several alternates already
we used that one using elsif next using
switch case c in order to reduce the
complexity of else--if structure this
switch structure launcher switch
statement see these are the important
usages of conditional statements can I
tell my Kamala types of statements types
of conditions and usage three points two
kinds of flow control statements other
forget upon that one and we are in
conditional statements two types of
conditional statements three types of
conditions five types of usage Oh tell
me yes if statement is not it okay if
statement switch statement next
condition types of conditions single
condition bone condition nester
condition good next usage excuse just a
minute Vidya can answer it I tell me
with your usage of conditional
statements in java Vidya executing your
block of statements when condition is
true ah match it with a block of key and
their wife is breaking my
can you hear me now yes can you decide
among several ultimate by using s ah
this is among several all to me are by
using switch statement ah
and finally one is executed block of
statements when more than one condition
is true by using Vanessa different
nested-if structure okay good yeah next
loops move structures with a number 6 7
loop statements or you can say loop
structures say loop statements used for
repetitive execution you should for
repetitive repetitive execution okay say
we have four types of loop structures in
Java four types four types of loop
structures
in Java rahama have any idea four types
of loop structures in Java for loop for
loop good do loop do why Lu one ha ok ok
ok cool for loop next just a while loop
while loop next do-while loop some
difference is there in between while
loop and do-while loop that I will
explain in loop statements chapter
do-while loop next he Anna handset for
loop in VB script also we have for loop
structures for loop while loop next do
while or until loop next fourth one for
each next loop for each loop but in Java
Anna Hansard for loop a an enhanced for
loop say for first 3 loops we use scalar
variables for enhancer for loop we use
arrays we use arrays
okay now srivalli
tell me for Lu structures in Java for
you
why for loop why you while oh why do I
look an enhanced for Jana Hans farm look
good okay next next arrays in Java
arrays in Java arrays in Java she
generally array is a collection of
similar type of elements in Java array
is an object that contains elements of
similar data types integer type array
character paper a string type array
boolean type array but in vbscript you
can store different values in arrays
suppose one array is there in that array
you can store into some integer value
some some string values some double
values some date type data etc but in
Java restricted suppose if it is integer
array you can store integer type data
only if it is character array character
type data string type array string type
data only what is string what is
character what is the difference between
string and characters that I will
explain in string handling in Java
chapter Java arrays index basic index
starts from 0 suppose 10 elements 0 to 9
index 0 to 9 the length of an array is
established
when the array is created and array
length is fictional okay next each item
in array is called as element she
observe the points generally array array
is a collection of collection of similar
type of elements similar type of
elements see in vbscript array is one of
the variable scalar variables array
variables but in Java array is object
see in Java array array is an object
object that contains elements of similar
data types that contains elements
elements of similar data types data
types
next Java arrays index based index
starts from 0 not only Java array
vbscript are also 0 based index vbscript
array also having zero based index Java
array is index based index based index
starts from 0 0
to n minus one next the length of an
array is established when the array is
created the length means size the length
of an array is established when the
array is created when the array is
created next array length is fixed and
array length length is fixable next what
is element each item in an array is
called an element each item is called an
element each item each item in array
each item in RA is called as an element
this is a brief introduction about
arrays how to declare arrays assign
values to elements next advantages and
disadvantages of arrays that we will
discuss in arrays chapter next next mine
Java methods Java methods Java methods
technical term method business Kermes
operation methods are known as methods
are also known as procedures or
functions methods are also known as
procedures or functions suppose in C
language no method no method Thermal
functions built-in functions and
user-defined functions but in Java
methods C in structured programming like
C language we use functions in
object-oriented programming system like
Java we use methods both are same in
purpose purpose same C methods methods
are also known as functions methods are
also known as functions C in structure
programming in structured programming
for example C language in structured
programming we use functions we use
functions two categories of functions
built-in our predefined next
user-defined
next in object-oriented object-oriented
in object-oriented programming we use
methods methods also say two types two
categories are two types Belton and the
user-defined Oh can appreciate this
point methods is it okay say basically
methods are two types see basically
methods methods are two types what are
the two types Kamala what are the two
types till user-defined see first one
built in Belton or predefined next
user-defined see in baton methods in
Belton methods we have some categories
some categories of built-in methods for
example number methods methods used on
numbers methods used on numbers next
character character methods next
methods methods on strings string
methods next date and time methods date
and time methods next array methods etc
next user-defined methods user-defined
methods see we have two types of use or
different methods one is method with
returning value another is method
without returning any value see method
with returning value next method without
returning any value what is returning
value what is the advantage that I will
explain in user different functions
user-defined methods chapter which is
only road map method without returning
any value
when we say first fall pretty
function our methods when we prefer
methods when we prefer methods I do not
know any idea see okay cool she lets me
have any ideas relax me when we prefer
methods oh no sir I don't have any idea
- okay good I think Raman can answer it
when we prefer method our functions in
computer programming Ramon so I use for
shiburin okay function if we lose
function the purpose criminal methods
functions purpose same repetitive
execution okay okay
repetitive execution see whenever we
want to execute whenever we want to
execute any code multiple times whenever
we want to execute any code multiple
times then we choose methods in
object-oriented programming functions in
select approved reusable reusability
what yeah excuses means reusable only
whenever we want to execute same code
multiple times then we choose functions
or methods functions in structure
programming methods in object-oriented
programming instead of writing the same
code again and again we create functions
or methods and we call who can appraise
any conclusion you see or thinking cool
become next
our regular expressions this is also
global feature you can find regular
expressions in all programming languages
and scripting languages kamala can you
tell me what are regular expressions
first what is a regular expression
Kamala I do not remember sir okay
sorry okay cool cool it is a formula for
matching patterns pattern matching a
regular expression defines such patterns
set a pattern for Strings see it is a
formula for matching patterns a regular
expression a regular expression defines
secchi such pattern
for Springs strings okay Java provides
the Java util dot reg X package built-in
package for pattern matching C Java
provides Java dot util dot reg X package
built-in package what is package that we
will discuss in practical chapters baton
packages and user-defined package is
also available packages reg reg X
package for pattern matching okay next
io operations I you and I woah
operations and file handling file
handling in Java yo what is ivo Vita I
was transferred
input/output say the Java Java small let
us use Java dot IO dot Java dot IO java
dot io package contains classes to
perform input and output operations
package contains predefined add classes
or to perform input and output input and
output operations ok here what are the
important operations reading input
reading data using input devices read
data using input devices a mouse and
keyboard next display output display
output on the console computer screen
display see important operations in this
chapter display output on the console
next read and write
to files and other files observe using
Java file class C using Java file class
predefined at class we can handle we can
handle text files means flat files flat
file file which doesn't have any format
example notepad C using Java file class
we can handle text files if you want to
work with the Excel files if you want to
work with Excel files for that we note
we need to download excel jar files from
any third-party resource and install if
you want to work with Excel files we
need to download excel jar files but for
flawed files we no need to add anything
Java provides file class for handling
text files okay no kanaka maole
oh he said we have we have that
knowledge on vbscript he said i do ah
how to handle excel files in VB script
how to handle excel files in VB script
using Excel application object now Excel
the Excel object is there now in VB
script using Excel object you can handle
Excel files
how to has in flat files in vbscript
using file system object how to handle
word files in vbscript using word object
file file class is there to handle flat
files but for excel files are any other
files you need to download third-party
jar files and install ok Sri Lakshmi any
confusion Sri Lakshmi no sir of it next
say excel jar files and other other type
of file jar files not built-in in Java
only a flat files a file class only
built-in you can work with flat files
but if you want to work with John this
one Excel files or any other type of
files we need to download and install
the jar files Excel jar files database
SQL jar files etc ok next last topic in
these fundamentals next - oops concepts
are therefore for fundamentals of hoops
an exception all of you put note
exception handling in Java exception
handling in Java first of all what is
exception in computer programming
exception is an abnormal condition see
in computer programming
X
option exception just a minute and
computer programming exception is an
abnormal condition is an abnormal
condition an exception is an event that
occurs during the execution of a program
that disturbs the normal flow of
instructions next the exception handling
in Java is one of the powerful mechanism
to handle runtime errors so that normal
flow of the application can be
maintained she types of exceptions how
to handle exceptions that I will explain
in exception handling in Java chapter
now just a definition level see an
exception an exception is an event an
exception is an event that occurs that
occurs during the execution of a
programming program during during the
execution execution of a program that
disturbs the normal flow that disturbs
the
normal flow of execution a normal flow
of instructions instructions nothing but
steps are statements instructions next
the exception handling the exception
handling in Java is one of the powerful
mechanism powerful mechanism to handle
the runtime errors not syntax errors to
handle the runtime runtime errors so
that normal flow of the application can
be maintained normal flow of the program
or application can be maintained a say
we have some types of exceptions what
are the types of accept exceptions in
Java and how to handle that I will
explain in exception handling in Java
chapter see these are the Java
fundamentals required for selenium next
the last ten minutes next whoops
concepts Java first we discussed the
Java
fundamentals
next Java object-oriented
object-oriented programming system oops
concepts or Rahman we have four
fundamentals of whoops four fundamentals
what are the four fundamentals of hoops
inheritance inheritance polymorphism yes
polymorphism obstruction and
encapsulation good for fundamentals for
fundamentals of oops
one is inheritance inheritance
inheritance means reusing next
polymorphism polymorphism next
abstraction next last one
encapsulation encapsulation
I am taking he inheritance have any idea
Kamala inheritance in Java any idea
no sir okay cool no issue pretty Yoshi
any idea inheritance say yes your
property
Radha object properties will inherited
authenticom parties will inherit okay
okay three srivalli any area yeah we
have two who inherit the base class
properties way I mean parent and child
relationship work okay okay
see inheritance is a mechanism in which
one object acquires all the properties
and behaviors of parent object in her
inheritance is a mechanism in which one
object acquires all the properties and
behaviors of parent object using
inheritance we can create classes that
are built upon existing classes say
inheritance means reusing is a mechanism
is a mechanism
in which just a minute in which one
object acquires one object acquires all
the properties all the properties and
behaviors behaviors of parent object
parent object on next point using
inheritance we can create classes that
are built-in upon existing classes using
inheritance we can create classes that
are built-in upon existing classes that
are built-in upon existing classes next
when we inherit from an existing class
we can reuse methods and fields from
parent class and we can add new methods
also new methods and fields also to this
new class see when we inherit from any
existing class when we inherit when we
inherit from an existing class we can
reuse we can reuse methods user-defined
methods built-in methods you can use any
in any class without declaration
built-in methods you can use in any
class but user different methods we when
we inherit from any existing class then
we can reuse methods and fields fields
means variables methods and fields from
parent class from parent class and you
can add new methods and fields also and
we can add new methods not only using
methods and fields from parent class you
can create methods and fields in child
class also new methods and fields
did you understand this last point third
point he said okay next to just I will
so I will explain types of inheritance
in any inheritance chapter I will show
exact I provide examples see Java
supports Java supports one is single
inheritance parent to child
single inheritance next multi-level
suppose grandparent parent-child subside
sub sub child like that multi single
inheritance parent-child multi-level
grandparent parent-child sub child sub
sub child like that multi-level
inheritance next
hierarchal hierarchal inheritance here
one note Java doesn't support multiple
inheritance what is multiple inheritance
that I will explain in inheritance
chapter just remember Java doesn't
support multiple inheritance due to
Dimond problem
Java doesn't support multiple multiple
inheritance due to time and problem this
is a brief introduction about
inheritance next polymorphism last ten
minutes
polymorphism polymorphism any idea
selects me what is polymorphism yes sir
okay it is a concept by which we can
perform a single task in different ways
a task in different ways not only in
single way C performing tasks tasks are
tasks in different ways in different
ways performing tasks in different ways
not only single way see polymorphism
derived from two Greek
quotes Paulie and Marvel say
polymorphism derived from two Greek
words two Greek words one is poly poly
means many poly means many many next
Marx Marx Marx means ways Marv's means
ways or you can say forms many forms are
many ways so polymorphism polymorphism
means many ways many ways say we have
two types of polymorphism in Java two
types two types of polymorphism in Java
any area Rajamani two types of palmar
prism in Java user no okay cool cool
compile-time polymorphism next a runtime
polymorphism see compiled
compile-time polymorphism compile-time
polymorphism next runtime a runtime
execution time polymorphism compile time
polymorphism runtime polymorphism next
we can achieve polymorphism by method
overloading and the method overriding
what is method overloading and what is
method overriding that I will explain in
methods chapter C node we can achieve we
can achieve polymorphism just a minute
we can achieve polymorphism by method
overloading and method overriding over
writing
overriding is a brief introduction about
polymorphism next third one abstraction
abstraction say abstraction is a process
of hiding implementation details and
showing functionality to the user in
another way it shows important things to
the user and hides internal details and
hides internal details see abstraction
abstraction
abstraction is a process process of
hiding hiding the implementation details
implementation details and showing
functionality and showing functionality
to the user next point in another way it
shows important things to the user and
hides internal details in another way it
shows important things important things
to the user and hides internal details
on general example general example
sending email sending email this is
general example see you just type the
email and send you don't know internal
process of email delivery you just type
and send it you don't know internal
process of the email delivery some
process is there
ok abstraction focus on what object does
instead of how it does see that is the
objective abstraction abstraction
some focuses on what the object what the
object does instead of how it does
instead of how it does in two ways we
can achieve abstraction one is using
abstract class another is using
interface what is abstract class what is
interface will discuss in practical
chapters just to remember abstraction
abstraction
can be achieved can be achieved in two
ways one is using abstract class
abstract means incomplete abstract class
classes two types concrete classes
abstract classes using abstract class
incomplete class here one two hundred
percent say when abstract class may have
a one abstract method are all abstract
methods next otherwise you can say zero
two hundred he interface interface
interface under percent abstract our
selenium-webdriver also interface see
last one encapsulation encapsulation see
this is only roadmap in practical
chapters you can get more clarity
encapsulation what is encapsulation is
one of the four fundamentals of hopes
encapsulation is a process of wrapping
code and data together in a single unit
see a an capsulation
is a process of is a process of rapping
rapping hood hood under data hood under
data together hood and data together
into a single unit into a single unit
see general example general example for
encapsulation general example capsule
capsule Medical example mixture of
several medicines mixture of several
medicines tablet is different capsule is
different medicines what is the what is
the use of encapsulation it provides the
control over data it provides control
over the data see it provides control
over the data
suppose we want to value value of the ID
greater than 100 we can write logic
inside the method suppose we want to
value of the ID ID field you want to
value of the ID field greater than 100
only for that we can write the logic
inside the setter method see this is the
brief idea about a Java for selenium
just one small topic a Java hierarchies
just last five minutes here are some
terms of Java packages Java packages a
Java package is a group of similar type
of say whoops concepts for general Java
packages a Java package is a group of
similar type of classes class means
program a Java package a Java package is
a similar similar type of classes
classes interfaces and sub-packages
optional a Java package is a similar
type of classes interfaces and sub
packages we have two types of packages
in Java see
two types two types of packages packages
in Java
any ideas really two types of packages
in Java last five minutes Rajamani I
think Ramon can answer it
no sir public or private I'm a built-in
built-in built-in packages see if you
load built-in packages then you can use
methods and other fields from that
predefined add classes built in packages
example can you tell me Kamala built in
packages in Java example those are
different packages anyhow user-defined
package names local you can use your own
names but built-in package names
standard example I will package util
package a scale package Xsara etc
save just interface class means program
interface interfaces in Java see an
interface is a collection of abstract
methods and interface is a type of type
of java definition block the type of
java okay that I will explain later
you will confuse an interface is a
collection of is a collection of we will
have separate chapter for interfaces the
chapter I will explain if I explain more
concepts in this roadmap chapter you may
confuse an interface is a collection of
abstract methods abstract methods is one
simple one an interface is not a class
writing and interface is similar to
writing a class but two are different
concepts C and interface is not a class
is not a class but writing an interface
writing an interface is similar to is
similar to
writing writing a class or program in
Java generally we do not use program
term class nothing but program class but
two are different concepts but who are
different different concepts okay just a
minute on small concept lost last one
Java programming hierarchy observe
observe Ramon Java programming hierarchy
hierarchy see after observe pretty after
setting up the Java environment after
Java environment setup first we have to
create Java project Java project under
the Java project under the Java project
we create Java package
what is Java package we already
discussed it what is Java package group
of similar type of classes group of
similar type of classes Java package
next after creating Java package you can
create Java class nothing but program
are same hierarchy for Java interface
Java interface Java interface note we
write Java code in the Java class or
interface we write Java code in the
class or interface see most of the time
we use classes only in our training
program not only in our test automation
in Java development also classes only
more important interfaces also used but
in only some scenarios okay before
closing the before closing the session
are sell me a pretty we can segregate
Java for selenium into two categories
one is Java fundamentals another is Java
hoops concepts just to list out the Java
fundamentals for selenium just a list
out ester topic headings trick here
comments in Java a commensal different
comment ever they taught a comment some
modifiers continue data types in Java in
Java not required continue ah never
modify ends more first Clemente's
comments next to modifiers next data
types next to modifiers next variables
ah-ah producing Java operators flow
control flow control under flow control
conditional statements and loop
statements next here in a finish cooking
methods
and under methods built-in methods and
user-defined methods next continuum
arrays in Java arrays in Java Java
methods
Java methods already I told are regular
expressions regular expressions
input/output operations
input/output operations and file
handling Nach here it's an important one
exception handling in Java okay next
last question for the day of vijaya for
fundamentals of whoops for selenium what
are the four fundamentals of Hoops for
fundamentals of Hoops in Java
inheritance polymorphism abstraction and
encapsulation good good okay any queries
I am going to close the session any
queries Krishna Chaitanya mother being
moved raha mom anybody Kamala sir ah any
queries say Lakshmi no sir I am fine
thank you
okay welcome we'll meet tomorrow same
time thank you