Core Java

Introduction to Java

1. Introduction to Java; features of Java: Java is a popular programming language used for developing software applications. It is known for its simplicity, object-oriented design, and platform independence. Some of the key features of Java include its automatic memory management, security, and portability.
2. Comparison with C and C++: Java is often compared to other popular programming languages like C and C++. While all three languages share some similarities, Java is designed to be easier to learn and use, with features like automatic memory management and built-in exception handling.
3. Download and install JDK/JRE (Environment variables set up): To start using Java, you need to download and install the Java Development Kit (JDK) or Java Runtime Environment (JRE) on your computer. Once installed, you also need to set up environment variables so that your computer knows where to find the Java executable files.
4. The JDK Directory Structure: The JDK directory structure is the organization of the files and folders that make up the Java Development Kit. Understanding the JDK directory structure is important for managing and troubleshooting Java installations.
5. First Java Program through command prompt: The first Java program you write is often a simple “Hello, World!” program that outputs a message to the console. You can write and run this program through the command prompt using the javac and java commands.
6. Different IDEs for Java Programmers: An Integrated Development Environment (IDE) is a software application that provides tools for writing, testing, and debugging code. There are many different IDEs available for Java programmers, including popular options like Eclipse, IntelliJ IDEA, and NetBeans. These IDEs can help streamline the development process and make it easier to write complex Java programs.