In this tutorial we will understand the Java 8 features. We will understand and implement the below topics.

1. Functional Interface And Default Methods In Java 8 –

In this tutorial we will understand below topics- What is the use of Functional Interface in Java 8?

• When to use Functional Interface in Java 8?
• What is the need of static method in Interface ?
• What is the need of having a default method in an interface ?

PART 1 : FUNCTIONAL INTERFACE AND DEFAULT METHODS IN JAVA 8

2. Lambda Expression in Java 8 In this tutorial we will understand below topics

• What is Lambda Expression in Java 8?
• Lambda Expression with Parameters

PART 2 - LAMBDA EXPRESSION IN JAVA 8

3. Method Reference in Java 8

In this tutorial we will understand below topics

• What is Method Reference in Java 8?
• Types of Method References in Java 8?

PART 3 - METHOD REFERENCE IN JAVA 8

4. Optional in Java 8 In this tutorial we will understand below topics

• Why to use Optional in Java 8?
• What is Optional in Java 8?
• Different ways to create Optional?
• What is the Difference in between Optional.of() and Optional.ofNullable() ?
• Optional.of() vs Optional.ofNullable() ?
• Methods available in Optional

PART 4 – OPTIONAL IN JAVA 8

5. filter(), findAny() in Java 8 In this tutorial we will understand below topics

• How to use filter(), findAny() in Java 8
• filter – Under the hood

PART 5 - FILTER(), FINDANY() IN JAVA 8

6. map() vs flatMap() in Java 8 In this tutorial we will understand below topics

• map() in Java 8
• What is the use of flatMap() in Java 8?
• map() vs flatMap()
• flatMap() in Java 8

PART 6 - MAP() VS FLATMAP() IN JAVA 8

7. Stream.peek() in Java 8 In this tutorial we will understand below topics

• How Stream.peek() method is different from other methods?
• What is the use of peek() method in Java 8?

PART 7 - STREAM.PEEK() IN JAVA 8

8. Short circuiting operations of Streams in Java 8 In this tutorial we will understand below topics

• Short circuiting operations in Java 8
• Different Short circuiting operations in Java 8
• limit() in Java 8
• findFirst(), findAny() in Java 8
• allMatch() anyMatch() noneMatch() in Java 8

PART 8 - SHORT CIRCUITING OPERATIONS OF STREAMS IN JAVA 8

9. Advance Collectors in Java 8 In this tutorial we will understand below topics

• joining() in Java 8
• summaryStatistics() in Java 8
• partitioningBy() in Java 8
• groupingBy() in Java 8
• mappingBy() in Java 8

PART 9 - ADVANCE COLLECTORS IN JAVA 8

10. Intermediate and Terminal Operations of Stream in Java 8 In this tutorial we will understand below topics

• What is Intermediate and Terminal Operations of Stream in Java 8?
• Intermediate Operations in Java 8
• Terminal Operations in Java 8
• Difference between Intermediate and Terminal Operations in Java 8
• Intermediate vs Terminal Operations in Java 8

PART 10 - INTERMEDIATE AND TERMINAL OPERATIONS OF STREAM IN JAVA 8