Assessments

1. The _______ interface was introduced in Java 8 to emit elements and supports a variety of operations that perform computations based on stream elements.

2. Which of the following factory methods of the StackWalker class creates a StackWalker class instance with the given option of specifying the stack frame information that it can access?

   1. getInstance()

   2. getInstance(StackWalker.Option option)

   3. getInstance(Set<StackWalker.Option> options)

   4. getInstance(Set<StackWalker.Option> options, int estimatedDepth)

3. State whether True or False: The CompletableFuture API consists of many methods which are implementations of the CompletionStage interface, and are the implementations of Future.

4. Which among the following methods is used when a type of filtering is required to skip all the duplicate elements in a stream and select only unique element.

   1. distinct()

   2. unique()

   3. selectall()

   4. filtertype()

5. State whether True or False: One of the great advantages of CompletableFuture is that it can...