Recursion vs loops - Default package

1. Get max of the array with loops/ recursion
2. Printing star with loops/ recursion

Java 8 streams - java8 package

1. filter - create filtered stream - lambda function should return a boolean.
2. map - apply function to every element and create a new stream - lambda function should return something.
3. flatMap - create a stream combining multiple streams.
4. forEach - apply function to every element - lambda function return will be ignored.
5. match (anyMatch, allMatch, noneMatch)
6. reduce
7. collect - stream to collection.