Welcome back, Sujit Kumar Mishra

Can you explain about Java-8 features?

Java 8 Key Features (Easy to Remember):

1: Lambda Expressions

Lets you write code in a cleaner and shorter way, especially for passing behavior as a method argument.

Runnable r = () -> System.out.println("Hello from Lambda!");

2: Functional Interfaces

Interfaces with only one abstract method. Used mainly with lambda expressions.

@FunctionalInterface interface MyFunc { void doSomething(); }

3: Stream API

Helps process collections of objects easily (like filtering, sorting, and mapping data).

List<String> names = list.stream().filter(s -> s.startsWith("A"))
                                      .collect(Collectors.toList());

4: Default & Static Methods in Interfaces

You can now add methods with a body inside interfaces.

default void print() { System.out.println("Default method"); }

5: Date and Time API

Improved classes to handle date and time (like LocalDate, LocalTime, LocalDateTime).

LocalDate today = LocalDate.now();

6: Optional Class

Helps avoid NullPointerException by representing optional values.

Optional<String> name = Optional.ofNullable(getName());

7: Nashorn JavaScript Engine

Allows you to run JavaScript code on the Java platform.

ScriptEngine engine = new ScriptEngineManager()
                                   .getEngineByName("nashorn");

In short:

Java 8 made Java more powerful and easier to use with features like lambdas, streams, better date/time handling, and more!