Write a java program to create a functional interface called Greeting with a method sayHello(). Use a lambda expression to implement it. 2. Write a Java program that uses a Predicate to filter even numbers from a list using streams. 3. Write a Java program Use a Consumer to print each person's name from a list of Person objects using a method reference.

It was really hard to crack the first round of technical interview, there were 2 more rounds, they were even more harder than the first round, I got rejected in the final rounf