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The Java SE 8 Programmer II exam is designed for developers who have knowledge and experience with Java programming using Java SE 8. It validates skills related to Java language features, APIs, and libraries introduced in Java SE 8.
The passing score for the 1z0-809 exam is 65%.
The exam covers topics such as: Java basics, object-oriented programming (OOP), Java API classes, functional programming, exception handling, collections framework, and Lambda expressions.
The exam duration is 150 minutes.
The 1z0-809 exam contains 85 questions.
Lambda expressions allow you to pass behavior as parameters to methods. It is a new feature in Java 8 that helps in functional programming.
Implement the compareTo() method in the class. It defines the natural ordering of objects and compares the current object with the specified object.
A stream is a sequence of elements supporting sequential and parallel aggregate operations. They allow processing sequences of elements (such as collections) in a functional style.
Map is an interface, and HashMap is a class that implements the Map interface. Map does not allow duplicate keys, and HashMap allows null keys and values.
Method references are a shorthand notation of lambda expressions to call a method by referring to it using its name.
TESTED 18 Dec 2024
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