WEBVTT

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Introduction to Java Program

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In this video, you will understand.

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Describe the history and purpose of Java.

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Identify the key features of Java.

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Write and run a simple Java program.

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What is Java?

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Java is a popular programming language used to build applications.

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It is simple, reliable, and widely used around the world.

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Created in the 1990s by James Gosling at Sun Microsystems,

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initially called Oak, later renamed Java.

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Known for the idea, write once, run anywhere.

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Key features of Java.

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Java has important features that make it powerful and flexible.

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Object-oriented programming, OOP, organizes code into classes and objects.

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Platform independent runs on any device with a JVM.

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Secure and reliable prevents harmful code and handles errors.

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Multi-threading allows multiple tasks to run at the same time.

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Java editions.

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Java comes in different editions for different uses.

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Java SE, Standard Edition, core features for desktop and basic applications.

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Java EE, Enterprise Edition, used for large-scale web and business apps.

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Java ME, Micro Edition, for mobile devices and embedded systems.

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Writing your first program.

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Learning Java starts with a simple program.

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Every program has a class and a main method, example.

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But before we begin coding, we need to install IntelliJ idea.

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Write-click the installer file and open.

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Click Next to begin setup.

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Choose the installation folder and click Next.

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Click install to start installation.

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When done, click Finish.

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Launch IntelliJ idea to start coding in Java.

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Select Java from the options on the left.

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Open the new project window in IntelliJ idea.

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Enter the project name in the name field.

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Set the project location.

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Make sure the correct JDK is selected.

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Click Create to set up the new project.

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Write-click the SRC folder in your project.

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Select New Java class.

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Enter Hello World as the class name.

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Click OK to create the class.

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We type our first Java program.

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Press Shift F10 to run the program.

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The output appears in the console.

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Hello World.

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This completes our first Java program.

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From here, we are ready to move into the next concepts of Java.

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Java is a secure, reliable, and widely used language.

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Learning its features, additions, and first program builds the foundation for future programming skills.