151. What are the two types of Streams offered by java 8?

1. 1. random and synchronized

   
   
   

   2. parallel and random

   
   
   

   3. sequential and parallel

   
   
   

   4. sequential and random

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Sequential stream and parallel stream are two types of stream provided by java.

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152. Which is the new method introduced in java 8 to iterate over a collection?

1. 1. StringList.forEach()

   
   
   

   2. List.for()

   
   
   

   3. foreach (String i : StringList)

   
   
   

   4. for (String i : StringList)

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Traversing through forEach method of Iterable with anonymous class.

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153. What is the return type of lambda expression?

1. 1. void

   
   
   

   2. String

   
   
   

   3. Function

   
   
   

   4. Object

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Lambda expression enables us to pass functionality as an argument to another method, such as what action should be taken when someone clicks a button.

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154. What is the purpose of BooleanSupplier function interface?

1. 1. returns null if Boolean is passed as argument

   
   
   

   2. There is no such function interface

   
   
   

   3. represents supplier of Boolean-valued results

   
   
   

   4. returns Boolean-valued result

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   BooleanSupplier function interface represents supplier of Boolean-valued results.

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155. Which of the following is not introduced with Java 8?

1. 1. Lambda Expression

   
   
   

   2. Spliterator

   
   
   

   3. Serialization

   
   
   

   4. Stream API

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Serialization is not introduced with Java 8. It was introduced with an earlier version of Java.

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