What tasks does the use of lambda functions in programming solve?

Lambda functions in Java allow writing more concise and expressive code, especially when working with functional interfaces. The main tasks solved by lambda functions:

• Simplification of syntax: replace anonymous classes, reducing the amount of code.
• Functional programming: enable passing behavior (functions) as parameters, which facilitates working with collections and streams.
• Improving code readability and maintainability: the code becomes more declarative.
• Use in Stream API: lambdas are widely used for processing collections through the Stream API.

Example of using a lambda function for sorting a list of strings by length:

List<String> names = Arrays.asList("Anna", "John", "Alexander");
names.sort((a, b) -> a.length() - b.length());
System.out.println(names); // [Anna, John, Alexander]

Thus, lambda functions make the code more concise and flexible.