With two decades of experience and he's taught over 3 million people how to code.
He's designed this course for anyone who wants to learn Java if you're a beginner
do n't worry I 'll make Java super simple and hold your hands through this entire
course. I hope you'll stick around and learn this beautiful and powerful
programming language. We 're gon na look at the anatomy of a Java program in this
java tutorial. The smallest building block in java programs are functions if
function is a block of code that performs a task as a metaphor think of the buttons
on the remote control of your TV. IntelliJ IDEA is absolutely free and it 's more
than enough for this course so download all right now. After the parentheses we had
a pair of curly braces and inside these braces we write the actual Java code. Every
Java program should have at least one function and that function is called main so
main is the entry point to our programs whenever we execute a Java program the main
function gets called and the code inside this function gets executed.
A class is a container for related methods so we use classes to organize our code
by the same token we have a concept called package and we use a package to group
related classes so as our applications grow we 're gon na end up with hundreds or
even thousands of classes so we should properly organize this class us into
packages. The base package for a Java project is the domain name of your company in
Reverse. Code editor might look a little bit intimidating at first but trust me it
's really easy and you 're gon na learn about it throughout this course. For now
just type a base package for your project it can become that your name or whatever
it does n't really matter all right now let 's go forward. Marsh has put together a
comprehensive cheat sheet with summary notes that you can download below this
video. IntelliJ is building our application and we can see the result in this
little terminal window so here's our hello work message so that was our first Java
program next I 'm going to explain how Java code gets executed under the hood.
IntelliJ uses the Java compiler to compile our code into a different format called
Java bytecode. This Java code is platform independent and that means it can run on
Windows Mac Linux or any operating systems that has a Java runtime environment.
Java applications are portable or platform independent. Java was developed by James
Gosling in 1995 at Sun Microsystems which was later acquired by Oracle in 2010.
Java has close to 9 million developers worldwide currently about 3 billion mobile
phones run Java as well as 120 million TV sets and every blu-ray player. Average
salary of a Java developer is just over $ 100,000 per year in the US. This course
is the first part of my complete four-part Java series. Each part is about three to
four hours long so it can easily complete it in a day or two. The first part will
give you a solid foundation on how to start programming in Java in the second part
we 'll talk about object oriented programming which is a style of programming use
in most if not all Java applications. The third part will talk about core Java API
is or application programming interfaces.
Once you learn all this I 'm gon na give you a project you 're gon na build a
mortgage calculator on your own so make sure to pay great attention to all the
materials. Make sure to use most of them in this project are you ready now let 's
jump in and get started in this tutorial we're gon na talk about variables in Java
we use variables to temporarily store data. In the next tutorial we're going to
talk about various types in Java. We have two categories of types we have primitive
types and non primitive types or reference types for storing complex objects. All
these types are for storing whole numbers that do n't have a decimal point. In one
bite we can store values from 128 to 127. In Java whenever you deal with a large
number like this you can use an underscore to separate every three digits just like
He's designed this course for anyone who wants to learn Java if you're a beginner
do n't worry I 'll make Java super simple and hold your hands through this entire
course. I hope you'll stick around and learn this beautiful and powerful
programming language. We 're gon na look at the anatomy of a Java program in this
java tutorial. The smallest building block in java programs are functions if
function is a block of code that performs a task as a metaphor think of the buttons
on the remote control of your TV. IntelliJ IDEA is absolutely free and it 's more
than enough for this course so download all right now. After the parentheses we had
a pair of curly braces and inside these braces we write the actual Java code. Every
Java program should have at least one function and that function is called main so
main is the entry point to our programs whenever we execute a Java program the main
function gets called and the code inside this function gets executed.
A class is a container for related methods so we use classes to organize our code
by the same token we have a concept called package and we use a package to group
related classes so as our applications grow we 're gon na end up with hundreds or
even thousands of classes so we should properly organize this class us into
packages. The base package for a Java project is the domain name of your company in
Reverse. Code editor might look a little bit intimidating at first but trust me it
's really easy and you 're gon na learn about it throughout this course. For now
just type a base package for your project it can become that your name or whatever
it does n't really matter all right now let 's go forward. Marsh has put together a
comprehensive cheat sheet with summary notes that you can download below this
video. IntelliJ is building our application and we can see the result in this
little terminal window so here's our hello work message so that was our first Java
program next I 'm going to explain how Java code gets executed under the hood.
IntelliJ uses the Java compiler to compile our code into a different format called
Java bytecode. This Java code is platform independent and that means it can run on
Windows Mac Linux or any operating systems that has a Java runtime environment.
Java applications are portable or platform independent. Java was developed by James
Gosling in 1995 at Sun Microsystems which was later acquired by Oracle in 2010.
Java has close to 9 million developers worldwide currently about 3 billion mobile
phones run Java as well as 120 million TV sets and every blu-ray player. Average
salary of a Java developer is just over $ 100,000 per year in the US. This course
is the first part of my complete four-part Java series. Each part is about three to
four hours long so it can easily complete it in a day or two. The first part will
give you a solid foundation on how to start programming in Java in the second part
we 'll talk about object oriented programming which is a style of programming use
in most if not all Java applications. The third part will talk about core Java API
is or application programming interfaces.
Once you learn all this I 'm gon na give you a project you 're gon na build a
mortgage calculator on your own so make sure to pay great attention to all the
materials. Make sure to use most of them in this project are you ready now let 's
jump in and get started in this tutorial we're gon na talk about variables in Java
we use variables to temporarily store data. In the next tutorial we're going to
talk about various types in Java. We have two categories of types we have primitive
types and non primitive types or reference types for storing complex objects. All
these types are for storing whole numbers that do n't have a decimal point. In one
bite we can store values from 128 to 127. In Java whenever you deal with a large
number like this you can use an underscore to separate every three digits just like
