IntelliJ Idea Installation | Lecture 2 | Java and DSA Foundation Course

College Wallah

23 Oct 202207:56

Summary

TLDRIn this video, Maanvi walks viewers through the process of setting up a Java development environment on both Windows and macOS systems. She explains how to install the Java Development Kit (JDK) and IntelliJ IDEA, a popular integrated development environment (IDE) for writing and running Java code. The tutorial includes step-by-step instructions for downloading, installing, and configuring these tools, followed by running a simple 'Hello World' Java program. This video provides a comprehensive guide for beginners looking to start coding in Java on their computers.

Takeaways

😀 The video is about setting up a Java environment on a system.
💻 Two essential installations are needed: JDK (Java Development Kit) and IntelliJ IDEA.
🔧 The speaker demonstrates how to set up Java on both Windows and Mac OS.
📥 For Windows, the process involves downloading the JDK and IntelliJ IDEA from their official websites.
⚙️ During installation, it's recommended to use default settings and ensure Java is properly installed.
🚀 After installing JDK, IntelliJ IDEA is installed, with a focus on the free Community version.
🔍 IntelliJ IDEA automatically detects the JDK, so no extra configuration is needed.
👩‍💻 A basic Java program (Hello World) is demonstrated in IntelliJ IDEA, showing how to run Java code.
🔄 Mac OS users need to download the appropriate version of JDK and IntelliJ IDEA based on their processor (Intel or M1/M2).
🎉 After completing the installations, the first Java program is successfully run on both Windows and Mac OS.

Q & A

What is the purpose of this video?
-The video aims to guide viewers through setting up the environment to run Java code, including installing JDK (Java Development Kit) and IntelliJ IDEA on both Windows and macOS.
What are the two main tools required to run Java in this video?
-The two main tools required are JDK (Java Development Kit) and IntelliJ IDEA, an Integrated Development Environment (IDE) for writing and running Java code.
How does the video suggest installing JDK on a Windows system?
-The video suggests downloading the latest version of JDK from the official Oracle website, running the installer, and following the default settings without any changes.
What version of IntelliJ IDEA is recommended in the video, and why?
-The video recommends downloading the Community version of IntelliJ IDEA because it is free and sufficient for the tasks in the course, eliminating the need for the paid Ultimate version.
What steps are involved in installing IntelliJ IDEA on Windows?
-The steps include downloading the installer from the IntelliJ IDEA website, selecting options like creating a desktop shortcut, and installing the software. After installation, the system must be restarted.
What should users do after installing IntelliJ IDEA for the first time?
-Users should not import any settings and click 'New Project'. IntelliJ IDEA will automatically detect the installed JDK, so no additional configuration is needed.
What is the first Java program created in the video, and how is it structured?
-The first Java program created is called 'First Java Program'. The basic structure includes a template with a public class and the 'public static void main' method, which serves as an entry point for running Java code.
What is the purpose of the 'Run' button in IntelliJ IDEA?
-The 'Run' button allows the user to execute the Java program. When clicked for the first time, it may take longer to run, but subsequent runs will be quicker.
What output is expected after running the first Java program?
-The expected output after running the first Java program is 'Hello World', which confirms that the setup and code execution were successful.
How is the process of setting up Java on macOS different from Windows?
-On macOS, users need to download the JDK suitable for their processor (Intel or M1/M2) and follow similar steps as in Windows. The installation process for IntelliJ IDEA also involves downloading the Community version and creating the first Java project.

Outlines

00:00

🖥️ Setting up Java Development Environment on Windows

In this paragraph, the presenter introduces the process of setting up a Java development environment on a system. This involves installing two essential components: the Java Development Kit (JDK) and IntelliJ IDEA (an Integrated Development Environment or IDE). The video demonstrates the installation on both Windows and macOS, starting with Windows. The presenter explains the step-by-step process of downloading the JDK from the official website, installing it with default settings, and skipping unnecessary documentation steps. The JDK installation is completed, and next, the presenter moves on to installing IntelliJ IDEA. The community version of IntelliJ IDEA is recommended as it's sufficient for the tasks in this course. The paragraph emphasizes the ease of writing and running Java code using IntelliJ IDEA.

05:04

💻 Installing Java and IntelliJ IDEA on macOS

This paragraph focuses on setting up Java and IntelliJ IDEA on macOS. The presenter explains the importance of selecting the correct version of JDK based on the type of processor (M1, M2, or Intel) and how to download the appropriate package. The installation process is straightforward, requiring no changes to default settings. The presenter also walks through downloading and installing the community version of IntelliJ IDEA, stressing that there is no need for the paid ultimate version. After installation, the first Java program is written and run, showcasing a 'Hello World' example. The steps complete the setup of the Java development environment on macOS, mirroring the process followed for Windows.

Mindmap

Keywords

💡JDK (Java Development Kit)

The Java Development Kit (JDK) is a software development kit used to develop Java applications. In the video, it is the first tool the speaker installs to set up the environment for running Java code. JDK provides the essential components like the Java Runtime Environment (JRE) and compilers necessary for compiling and running Java programs.

💡IntelliJ IDEA

IntelliJ IDEA is an integrated development environment (IDE) used for writing, editing, and running Java code. The video focuses on the installation of the 'Community Version' of IntelliJ IDEA, which is free and sufficient for the tasks in the video. The speaker explains how IntelliJ IDEA simplifies writing and running Java programs with its user-friendly interface.

💡Windows Installation

This refers to the process of setting up the Java environment on a Windows operating system. The speaker begins with a step-by-step guide on downloading and installing JDK and IntelliJ IDEA on a Windows machine, emphasizing the importance of choosing default settings for a smooth installation process.

💡Mac OS Installation

Similar to the Windows installation, the video covers the setup process for Mac OS users. It includes instructions on downloading the correct version of JDK and IntelliJ IDEA, particularly advising users to download versions based on their processor type, such as M1, M2, or Intel processors.

💡Hello World Program

The 'Hello World' program is a simple Java program that prints 'Hello World' to the console, commonly used to introduce basic syntax and functionality. In the video, the speaker runs this program as the first example after setting up the environment to show that everything is working correctly.

💡Public Class

In Java, a 'public class' is a class that can be accessed by any other class. The video briefly touches on this concept when showing the basic structure of the first Java program, explaining that it is a core part of almost every Java program the viewer will encounter.

💡Static Void Main

‘Static void main’ is the entry point of any Java application, where the program starts executing. The speaker highlights its importance in the program template shown in the video, explaining that this method is required to run Java applications.

💡Source Folder

The source folder in a Java project is where the source code files are stored. The video demonstrates how to locate the source folder in IntelliJ IDEA and explains that this is where the user will write and manage their Java code files.

💡Run Button

The run button in IntelliJ IDEA is used to compile and execute the Java program. The speaker shows how to use this button to run the 'Hello World' program for the first time, explaining that it may take longer to run the first time but will be faster in subsequent runs.

💡Java Program Template

A Java program template is the pre-written basic structure of a Java program that includes necessary components like the main class and method. The video introduces this concept when explaining the initial code structure that appears in IntelliJ IDEA, calling it a template that users will often encounter in their Java coding journey.

Highlights

Introduction to setting up a Java environment on Windows and Mac OS.

Two main installations required: JDK (Java Development Kit) and IntelliJ IDEA.

Step-by-step guide to downloading and installing JDK on Windows.

Instructions on installing IntelliJ IDEA Community version and why it's preferred for this course.

Detailed walkthrough of configuring IntelliJ IDEA after installation, including setting default options.

Explanation of Java code templates and the basic structure of a Java program in IntelliJ IDEA.

Running the first Java program (Hello World) in IntelliJ IDEA, with an emphasis on the ease of running code.

Common troubleshooting steps, like restarting the computer after installing IntelliJ IDEA.

Instructions for setting up the Java environment on Mac OS, including the choice of versions based on processor type.

Steps to install JDK and IntelliJ IDEA on Mac OS, including handling system requirements.

Tips on configuring IntelliJ IDEA for the first time on Mac OS, including setting up a new Java project.

The process of writing and running the first Java program on Mac OS, highlighting common settings and default options.

Emphasis on using the Community version of IntelliJ IDEA for all coding practices in the course.

Importance of keeping the environment setup straightforward by not altering default settings during installations.

Final walkthrough on executing Java programs efficiently after initial setup, demonstrating the quick run feature in IntelliJ IDEA.