1.1 How to be a Java Programmer | What is Java

Summary

This video script offers an insightful overview of Java, a versatile programming language rooted in OOPs concepts. The speaker compares Java with .NET, highlighting their respective advantages and suggesting that the choice depends on individual interests and goals. Emphasizing Java's platform independence, the speaker recommends it for those interested in cloud and big data technologies. The script guides beginners through the learning process, from understanding basic programming paradigms to mastering advanced Java concepts, and touches on certification paths for professional growth.

Takeaways

• 🌟 Java is a programming language that is heavily reliant on the Object-Oriented Programming (OOP) concept.
• 🔗 The progression in learning programming often starts with C, moves to C++, and then to Java, with .NET being a popular alternative, especially for Windows platform development.
• 🔄 Java's key advantage is its platform independence, allowing it to run on any operating system like Linux or Windows.
• 💡 The choice between Java and .NET depends on the programmer's interests and the specific requirements of the project, as both have their own strengths and weaknesses.
• 🌐 The future of IT is often associated with cloud computing and big data, technologies with which Java is commonly integrated.
• 📚 Starting with Java typically involves learning from a good book, possibly with a trainer, and lots of practice.
• 📘 Recommended books for learning Java include 'Java: A Complete Reference' and 'Head First Java', which is known for its engaging and comic-style content.
• 🔍 For those aiming for Java certification, Oracle (previously Sun) offers exams, and specific study materials are available for preparation.
• 🛠 Understanding the basics of programming, such as loops and conditional statements, is crucial before diving into more advanced Java topics.
• 🔑 OOP concepts are fundamental to mastering Java; these include principles like inheritance, encapsulation, and abstraction.
• 📈 Advanced Java covers topics like file handling, exception handling, collections, and generics, which are essential for building robust applications.
• 🌐 For Java programmers, there are opportunities in both software and web development, with technologies like Swing, JDBC, Servlets, JSP, and EJB being important for different application types.

Q & A

What is Java and why is it considered an amazing programming language?

Java is a high-level, object-oriented programming language that is considered amazing due to its portability and ability to run on any platform, such as Linux or Windows, thanks to its 'write once, run anywhere' (WORA) principle.

What is the relationship between Java and the OOPs concept?

Java is heavily dependent on the Object-Oriented Programming (OOPs) concept. It uses classes and objects to model real-world entities, promoting a modular and reusable approach to programming.

How does Java compare to .NET in terms of platform dependency?

Java is platform-independent and can run on any operating system, while .NET, especially in its earlier versions, was primarily designed to run efficiently on the Windows platform.

What are the advantages of learning Java over .NET or vice versa?

The choice between Java and .NET depends on the individual's interests and goals. Java offers platform independence and is widely used in cloud and big data technologies, while .NET provides integration with Windows platforms and Microsoft's cloud services.

Why is cloud computing considered the future of IT, and how does it relate to Java?

Cloud computing is considered the future of IT due to its scalability, cost-effectiveness, and accessibility. Many major tech companies like Google and Facebook are investing in cloud technologies, which often work with Java due to its compatibility and robustness.

What is the typical progression of learning programming languages, and where does Java fit in?

The typical progression starts with C, then moves to C++, and finally to Java. Java fits in after C++ as it introduces a pure object-oriented approach and is easier to learn with a foundational understanding of C and C++.

Why is C considered a good starting point for learning programming?

C is considered a good starting point because it introduces the basic programming paradigms and is procedure-oriented, which helps beginners understand the fundamentals before moving on to object-oriented languages like Java.

What are some recommended books for learning Java, and what do they cover?

Some recommended books for learning Java include 'Java: A Complete Reference' for a comprehensive guide, 'Head First Java' for an engaging and visual approach, and 'OCP: Oracle Certified Professional Java SE 8 Programmer I Study Guide' for those aiming for Java certification.

How does the concept of OOPs relate to Java, and why is it important to understand it?

OOPs stands for Object-Oriented Programming System, which is a core concept in Java. Understanding OOPs is crucial because it forms the basis of Java's programming model, including its four basic features: encapsulation, inheritance, polymorphism, and abstraction.

What are some advanced topics in Java that one should learn after mastering the basics?

After mastering the basics, one should learn about file handling, exception handling, collections, generic types, and advanced concepts like Swing for GUI development, JDBC for database connectivity, and web components like Servlets and JSP for dynamic web development.

How does the script suggest one should approach learning Java, and what resources are recommended?

The script suggests starting with a good book, optionally with a trainer, and lots of practice. It also recommends using resources like 'Java: A Complete Reference', 'Head First Java', and online platforms like W3Schools for web-related concepts, as well as following video tutorials for clarity on specific topics.

Outlines

00:00

🚀 Introduction to Java and Programming Language Comparison

The speaker, Nain, introduces the video by expressing enthusiasm about Java, an object-oriented programming language. Java's platform independence is highlighted as a key advantage, contrasting it with .NET, which is more tailored to Windows. The speaker emphasizes the importance of choosing a programming language based on personal interest and the specific requirements of the project. The video also touches on the future of IT, suggesting that cloud computing and big data, which often utilize Java, will be significant. Nain recommends starting with Java for those interested in cloud and big data technologies, but also acknowledges .NET's strengths for Windows-specific applications. The paragraph concludes with a brief history of Java's development, from Oak to Java, by the Sun Microsystems team led by James Gosling.

05:01

📚 Learning Java: Books, Trainers, and Practice

This paragraph focuses on the process of learning Java, starting with the necessity of a good book and the option of a trainer. The speaker suggests that while self-study is possible, a trainer can be beneficial for those who find programming challenging. The importance of practice is stressed, along with the need for a well-equipped machine with the Java Development Kit (JDK) installed. The speaker recommends several books for learning Java, including 'Java: A Complete Reference' and 'Head First Java', which is praised for its engaging and comic-style presentation. For those aiming for Java certification, the speaker mentions the Oracle Certified Java Programmer (OCJP) exam and recommends specific books for exam preparation. The paragraph also touches on the importance of understanding object-oriented programming (OOP) concepts, such as inheritance, encapsulation, and abstraction, as foundational to mastering Java.

10:03

🔧 Advanced Java Concepts and Practical Applications

The speaker delves into advanced Java topics, starting with the basics such as loops and conditional statements, and then moving on to more complex concepts like file handling, exception handling, and collections. The paragraph emphasizes the importance of practicing programming tasks to solidify understanding of these concepts. It also introduces the idea of generic types, which allow for the restriction of data types in collections. The speaker then transitions into discussing Java's application in software development, mentioning the use of Swing for GUI creation and JDBC for database connectivity. The paragraph concludes by outlining the components needed to create a GUI software, such as understanding Swing, MySQL, and JDBC, and suggests that mastering these can open opportunities for freelance work.

15:04

🌐 Java in Web Development and Enterprise Software

In this final paragraph, the speaker discusses Java's role in web development and enterprise-level software creation. The basics of web development, including HTML, JavaScript, and PHP, are mentioned, with a recommendation to learn from W3Schools. The speaker then focuses on Java's web components, such as Servlets and JSP, which are essential for creating dynamic websites. The paragraph also introduces JSF as an advanced version of JSP for more complex web applications. For large-scale enterprise software, the speaker recommends learning Enterprise JavaBeans (EJB). The paragraph concludes by emphasizing the bright future of Java programmers, especially with the rise of cloud computing and big data, and encourages viewers to ask questions, comment, and subscribe for more content.

Keywords

💡Java

Java is a high-level, class-based, object-oriented programming language that is widely used for developing applications in various domains. It is known for its 'write once, run anywhere' capability, meaning Java code can run on any platform that has a Java Virtual Machine (JVM). In the video, Java is discussed as an essential programming language that follows the OOPs concept and is compared with .NET, highlighting its platform independence.

💡OOPs concept

The OOPs concept, or Object-Oriented Programming, is a programming paradigm that uses 'objects' to design applications. It is based on the concept of 'classes' and 'objects', where classes are blueprints for objects and objects are instances of these classes. The video emphasizes the importance of understanding OOPs for learning Java, as many programming languages, including Java, are built on this concept.

💡Platform independence

Platform independence refers to the ability of software to run on different operating systems without requiring changes. In the context of the video, it is mentioned as a key advantage of Java, allowing Java programs to be executed on any platform, such as Linux or Windows, without modification.

💡C

C is a general-purpose, procedural programming language that is considered the precursor to many modern programming languages, including C++ and Java. In the video, C is mentioned as the starting point for learning programming, as it introduces basic programming paradigms before moving on to more advanced concepts in C++ and Java.

💡C++

C++ is an intermediate-level programming language that extends C by adding object-oriented features. It is not purely object-oriented, as it allows for procedural programming as well. The video discusses C++ as a stepping stone to Java, where it combines OOPs concepts with procedural programming, offering flexibility in coding styles.

💡.NET

.NET is a framework developed by Microsoft for building and running applications on Windows platforms. It is often compared with Java in terms of functionality and performance. The video script mentions .NET as an alternative to Java, especially for Windows-centric development, and acknowledges that it has certain features that are superior to Java.

💡Cloud

In the context of the video, 'cloud' refers to cloud computing, which is the delivery of computing services over the internet. It is mentioned as the future of IT, with companies like Google and Facebook investing heavily in cloud technologies. The video suggests that Java is well-suited for cloud environments due to its compatibility with big data and other cloud-based technologies.

💡Big Data

Big Data refers to data sets that are so large and complex that traditional data processing applications are inadequate. In the video, it is mentioned as a technology that works closely with cloud computing and is often used with Java, indicating the importance of Java in handling large-scale data processing tasks.

💡Swing

Swing is a Java GUI (Graphical User Interface) toolkit for providing a graphical user interface for Java programs. The video mentions Swing as part of the advanced Java learning path, where it is used to create desktop applications with a graphical interface, as opposed to the command-line interface (CLI) used in basic Java.

💡JDBC

JDBC, or Java Database Connectivity, is an API that allows Java programs to connect and interact with a database. In the video, JDBC is discussed as a crucial concept for connecting Java applications with databases like MySQL, enabling data storage and retrieval functionalities in Java software development.

💡Servlets and JSP

Servlets and JSP, or JavaServer Pages, are technologies used for developing web applications in Java. Servlets are Java classes that handle HTTP requests and responses, while JSP allows for the creation of dynamic web pages. The video script mentions these as components of advanced Java, used for creating dynamic websites.

💡EJB

EJB, or Enterprise JavaBeans, is a server-side component architecture for developing and deploying multi-tier Java applications. It is mentioned in the video as a part of advanced Java, suitable for creating large-scale, enterprise-level software applications that require robust and scalable solutions.

Highlights

Introduction to Java as an amazing programming language based on OOPs concepts.

Comparison between Java and .NET, highlighting their respective advantages and use cases.

Java's platform independence as a key advantage, contrasting with .NET's stronger Windows integration.

The importance of choosing between Java and .NET based on personal interest and future career goals.

The future of IT with a focus on cloud computing and big data, and how Java plays a significant role in these technologies.

Recommendation for Java as a first choice for those interested in cloud and big data technologies.

The journey from C to C++ and then to Java, emphasizing the complexity of learning programming from scratch.

The significance of understanding OOPs concepts before diving into Java for easier comprehension.

The history of Java, starting from Oak to the platform-independent Java, led by James Gosling.

The necessity of a good book, trainer, and practice for learning Java effectively.

Recommendation of specific Java books for beginners and those interested in certification.

The importance of understanding OOPs features like inheritance, encapsulation, and abstraction for mastering Java.

The difference between programming basics in C, C++, and Java, particularly in loops and switch cases.

The practical approach to learning Java through solving problems like factorial and palindrome.

Introduction to advanced Java topics like file handling, exception handling, and collections.

The role of Swing and JDBC in creating GUI applications and connecting to databases in Java.

The necessity of understanding web components like Servlets and JSP for dynamic web development in Java.

Enterprise Java Beans (EJB) as a tool for creating large-scale enterprise software applications.

The bright future of Java programmers with the rise of cloud computing and big data.

Transcripts

hello guys this is nain ready so today

we'll talk about one of the amazing

subject on Amazing programming language

called as Java now if you talk about

Java it's a programming language which

totally depend upon oops concept now as

you know many uh it courses include a

part called as programming now basically

this programming starts with C then we

go for C++ then we go for Java and we we

have amazing techn

net now many people compare with Java

and net see both have their advantages

both have their

drawbacks think about this now if you

talk about advantages of java it's a uh

you know you can run this software on

any platform Let It Be Linux Let It Be

Windows any platform if we talk about

doite especially runs on Windows

platform now it means if you want to be

a a Windows programmer if you want to

work if you want to create a software

which will work on Windows efficiently

go for net again net provides some

features which is which is better than

Java and Java has some features which is

better than net it's depend upon you

what you want to be you know when when

when I go for lectures when I give some

when I write some articles so people ask

me I want to be a programmer so either I

should go for Java or net my answer is

depends right so if you have interest in

Java go for Java if you have interest in

net go for net but as future tends now

if you talk about future of it lot lots

of people are saying that cloud will be

the future because if you talk about

Google it's working on clouds if we talk

about Facebook they have their own

clouds so all clouds clouds clouds and

behind clouds we have hu we have big

data so all this technology normally

works with Java so uh I I recommend

normally Java but if you want to be in

Windows platform Microsoft has also its

own Cloud Server so if you want to work

in micros if you want to go for

Microsoft Cloud Server go foret it's

amazing now uh question arise how to

start with Java you know normally from C

to C++ when you start with C it's it's

quite complex you know you don't know

about programming anything you're like a

freshman and starting with C so first

code you know you have that addition of

two numbers then you have to print hello

then uh finding even odd so to do the

small small parts you have this

programming and you're so confused why I

need this programming concept to do

addition of two numbers I can use

calculator and that's what you can

create your own calculator afterwards

but if you know the basic programming

paradigms and that's why you have the

startup language called C you know they

start with see so that you can be

friendly with programming because if you

don't know programming and you're

starting with Java it's quite complex so

they start with C after C they they

combine some oops concept know you have

this object oriented programming system

into C like if you talk about oops

concept we have objects we have classes

and classes so if you have this C

language which is pop which is procedure

oriented programming and you add some

oops concept and know you have if if you

add some classes in in C that becomes C

with classes and that's what we have is

C++ so earlier it was C with classes

then we have this new name called as C++

but again C++ is not uh purely object

oriented because if you say object

oriented it simply means you have to

work with object it simply means you

have to work with classes everything you

do in object oriented programming system

is with classes or some block but in C++

you have this amazing concept where you

can write your main main function out of

the

class you can use those primitive data

type int float all this thing that's why

C++ is not purely object oriented but

it's it's amazing using C++ you can you

can do programming in oops concept you

can do programming in pop so you have

both the advantages C only pop C++ both

you can work in pop and you can work in

O then we have this amazing concept you

know in 19 uh 1991 we have this amazing

uh Sun microsystem team headed by James

Gosling so they started with a

programming language called as Oak then

they wanted a platform independent

programming language so they name it as

Oak programming again with that patent

tissue all those things so they changed

the name from Oak to Java and how to

start with with Java again the way you

learn C the way you learn C++ you have

to go for Java you have to pick up a

good book first you require a trainer

you require a good book or you have you

require lots of practice again book is

compulsion you have to read you have to

use some book trainer is optional so if

you if you think you can do it by

yourself go ahead but if you think

programming is not that easy for you you

need a trainer and you require practice

you require some good machine in which

you have this good ja jdk installed and

then you have to practice okay now to

start again uh we have this amazing

books we can go for this Java complete

reference latest is E edition and you

can buy is on flip cart you will get

discounts I'm not promoting flip cart

here but I'm promoting discounts so uh

you can go for this second book I have

here this is head first it's not not sub

and JSP it's Java so you have this

another book called as head first Java

again if you if you hate reading read

this book you will love reading you know

they have all these comic Parts you can

see here so you can see some comic parts

so it's it's fun to read but if you are

a you know a good reader you want you

like reading you have this

book it says some uh Java SJP so if you

want to be a Java certified you have to

give an exam by Oracle now this is old

book this is Sun certification but in uh

two years back Oracle bought Sun so now

they have this new example is ocp or you

can say ocjp so earlier it was scjp

which is Sun certified Java programmer

now it is Oracle certified Java

programmer content are same cover

changes so if you talk about this book

so if you want to be a Java certified go

for this book if you want to learn Java

go for head first Java if you want to

learn if you want to practice again you

have have this book so these are all

questions for certification book so if

if you want to go for certification we

have some objectives questions here so

again you have many internet resources

to go for Java but if you want some uh

some Concepts to be clear I have

remaining videos you can see that I have

videos on Constructors I have videos on

AB classes so you can see those videos

to get your Concepts clear and uh if you

talk about what to read how to read

start with a book so you have to start

with any one book see two options you

can go for training or you can go for

books if you're going going for training

so trainer will decide what to teach

what not to teach so they have their own

cabus they know what you should know

they know what you should not know right

uh then if you talk about books books

have all the content so if you're going

for book bit difficult but not

impossible you have to start with book

again you can get go for any book I will

recommend go for at first Java but

because if you you will learn you will

uh love learning you will love reading

and you will understand something so if

you go for that book it has some amazing

syllabus so it all starts with what is

classes what is object then what is oops

concept because if we talk about any

good programming language they all

follow this oops concept oops stands for

object oriented programming system now

if you know oops properly Java is

amazing Java is easy but if you are you

know you are going through bad days with

oops then Java is gone because to

understand what is Java you should know

what is oops and again oops have this uh

four basic features you can say inter

inheritance you have encapsulation you

have uh you have this abstract

abstraction so you have these Concepts

so if those concepts are clear Java is

clear now give me one

second yeah so what I'm talking about

you have this uh four basic feature of

oops so you have to you have to learn

those concept then you can understand

Java properly then you have to

understand some programming Basics like

uh what is if condition what is if else

what is switch case what is uh this uh

for Loops while loop do while loop you

know everything is different everything

is different so lot of people say for

Loop while loop do while Loops are same

not exactly for is different why is

different do what is different output is

the same again lots of people say you

will get the same output but processing

part

changes what exactly changes we'll

having next uh I will I will do a video

on that for L while L and do L but if

you talk about switch case uh if else

now people says if you know switch case

in C if you know switch case in C++ you

will understand switch case in Java

again that's right but there are some

difference between switch case of java

and switch case of C it simply switch

case of C supports primitive data type

switch case of java supports object so

amazing then uh we have uh yeah then

after for for lo you have to practice

lots of things like uh to for practice

you have questions like find uh this uh

factorial then you have to go for

palindrome you have I'm strong number so

if you practice all this thing you know

your for Loops are clear your white

Loops are clear so you know the basic of

programming you'll understand so once

you understand the basics of programming

then you have to go in advanced part

like you have to work with uh uh this

files you have to work with objects now

you know we have many Concepts we have

to work with files where you can store

your data in files not database you know

not those relational database I'm

talking about normal files Let It Be txt

files those are also your database so

you have to write some codes using which

you can save your data in file so pick

up data from user process it and store

it in file so that next time when user

comes you can retrieve the data from

file okay so that all comes under file

handling then we have this amazing

concept called exceptional handling see

if you talk about exceptions we we

normally talks about errors so errors of

three types we have compile time error

we have runtime error we have this one

uh logical error if we talk about

compile time errors so if you make any

mistakes in running or typing your code

like you have typo mistakes so let's

suppose you miss semicolon If instead of

typing uh main you type something else

you have instead of a you like WR e so

it will give some compile time error

which you can solve during compile time

only you have some logical errors which

means 2 + 2 answer is five so you have

you're dealing with some logical logical

problems but if you're depending on user

input put like you're expecting you

taking input from a file so today it

works because you have a file tomorrow

maybe your file is deleted so it will

your code will try to open the file

which is not there so it will give some

error you have to handle those errors

because those errors are called as

runtime errors and normally runtime

errors goes for exceptions so you have

to handle those exceptions so the topic

is exceptional handling then you have

this uh collections see if you talk

about arrays as you know arrays again I

have video you can check it out so

arrays are collection similar type of

elements so same elements right you can

have in variables you can have float

variables you can have

adds but if you talk about collections

so collection is Advanced part of array

which provides you many features like

you can have your own data you can have

any type of data type in the same

collections you have this iterative

options you can expand your collection

any time so collections are similar like

arrays but not exactly same difference

okay then we have this generic types so

you can say again we will have video on

gener but simply generic is like U if

you want to restrict your user to to

give some specific type of data type

like suppose if you talk about

collections so that collection should

only include integers so you have to

specify rri if you have a collection

that should be only

support float so you have to mention

float so that is

gener so this this all comes under Co

Java so you have this Java which comes

which goes in two parts so one is code

Java second is Advanced Java so if we

talk about code Java uh this is your

book code Java now in advanced Java

again depend upon universities depend

upon academic courses we have different

names some people say it's as code Java

some says basic Java or some say

programming in Java but if you talk

about the advanced part normally we say

it's an advanced Java because it deals

with implementation so in Coe Java you

learn concept you know you learn lots of

Concepts this concept that concept you

understand everything in Java then after

that once you're done with the basic

course you have to advance yourself so

that you can create a software so that

you can Implement your concept somewhere

and it all starts with uh software

platform so you have two platforms

normally we have software platform we

have web platform so if we talk about

software platform we have to work with

swing so we have this concept of Swing

you can create a GUI because earlier

when we talk about Cod Java we have to

work with CLI so it's Comm line

interface now we have to work with GUI

for that you require a concept called a

swing now in swing possible you you will

save some data in your database so you

require uh database so let's suppose

MySQL so you have MySQL you have swing

so to connect swing with with my skill

you require jdbc again I have video so

you can see that so you have this jdbc

concept so once you complete with swing

and jdbc you can create a GUI software

so you can do a freelancing job let's

suppose you want to create a software

and you you want to earn this tool swing

MySQL jdbc that's it if you know this

Concepts you can create a good

software but if you want to advance

yourself for web thing like if you want

to create a websites Dynamic websites

again to create a website you require

HTML you require JavaScript you require

biscript so you can learn all those

concept on Amazing website called as W3

SCH school but to learn Dynamic web

Dynamic web programming in Java you have

this book so this is what we talk about

web component so this is head serlet and

JSP so using serlet you can create a

dynamic website using JSP you can create

a damic website again then why 2 why y

JSP this Bo okay so this normally goes

with web components so we have that

software comp components s those parts

we have web components ser and JSP again

we have this Advanced version of JSP

called JSF so you can also go for JSF

but if you want to go for some big

software if you want to work in Industry

as you're creating a huge software

enterprise Enterprise level software you

can say then you have to go for ejb so

it's Enterprise Java bins and seriously

if you know all this software web EB you

are a Java programmer you can create big

applications and seriously in future it

will rock it's also not rocking also but

in future it will Ro because you have

this clouds you have to work with clouds

it works with hup then uh big data so

all this come together to form to work

with Java so if you are a Java

programmer have a bright future so let

me know if you have any doubts and

please comment and make sure you

subscribe for more videos thank

you