JDK - Java Development Kit

Java Development Kit, also known as JDK, is a software development kit used for developing Java applications. JDK includes the necessary files and components to develop, test, and deploy Java applications.

Features of JDK

• Java Development Tools: JDK provides the necessary tools for developing Java applications such as compiler, debugger, and JavaDoc.
• Application Server: JDK comes with an application server, which is used to deploy and run Java applications.
• Java Runtime Environment: JDK includes a Java runtime environment, which is used to run Java applications.
• Java APIs: JDK provides a vast collection of APIs, which are used to develop different types of applications.

Installing JDK

To install JDK, follow these steps:

1. Go to the Oracle website and download the latest version of JDK.
2. Double-click the downloaded installer file and follow the installation wizard.
3. Set the JAVA_HOME environment variable to the installation directory of JDK.

Getting Started with JDK

To start using JDK, follow these steps:

1. Create a Java source file with a .java extension.
2. Write Java code in the source file.
3. Compile the source file using the javac command.
4. Run the compiled application using the java command.

public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}

Conclusion

JDK is an essential tool for Java developers as it provides all the necessary components and tools for developing Java applications. With JDK, developers can easily develop, test, and deploy Java applications.