What is a key advantage of using lambda expressions in Java?

A key advantage of using lambda expressions in Java is the simplified syntax and more readable code they provide. Lambda expressions reduce the amount of boilerplate code needed to implement single-method interfaces, making the code more concise and easier to understand. They also promote a functional programming style, which can lead to more declarative and expressive code. For example:

// Without lambda expression 
Runnable runnable = new Runnable() { 
   @Override public void run() { 
      System.out.println("Running"); 
   } 
}; 

// With lambda expression 
Runnable runnable = () -> System.out.println("Running");

As shown, the lambda expression simplifies the code, making it more readable and less error-prone. This advantage of lambda expressions contributes to cleaner and more maintainable code in Java applications.

The shift towards functional programming in Java, enabled by lambda expressions, has transformed the way developers write code. By embracing this paradigm, developers can create applications that are not only easier to read and understand but also more flexible and adaptable to change.