What are the main advantages and disadvantages of using Java?

Advantages of Java:

• Platform independence — Java bytecode runs on the JVM, allowing programs to run on different operating systems without changes.
• Extensive standard library — a multitude of ready-made classes and tools for solving various tasks.
• Object-oriented — promotes modularity and code reuse.
• Large community and support — numerous frameworks, libraries, and resources.
• Security — built-in security mechanisms, memory management via garbage collection.

Disadvantages of Java:

• Performance — due to working through JVM and garbage collector, Java can be slower than native languages like C++.
• Memory consumption — Java applications may require more memory.
• Verbose syntax — compared to some modern languages, the code can be more cumbersome.

Example of a simple Java class:

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

Java is suitable for developing large, scalable, and cross-platform applications but requires consideration of performance and resource features.