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Sep 17, 2021

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366 1z0-809 practice questions with detailed explanations

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What topics are on the 1Z0-809 exam?

Java Class Design

1.1

Implement encapsulation

1 subtopics

1.1.1Access modifiers and encapsulation principles

Learning Objectives

Understand and implement proper encapsulation using access modifiers
Design classes that hide implementation details

1.2

Implement inheritance including visibility modifiers and composition

1 subtopics

1.2.1Inheritance and composition patterns

Learning Objectives

Implement class inheritance correctly
Understand visibility rules in inheritance
Apply composition patterns effectively

1.3

Implement polymorphism

1 subtopics

1.3.1Runtime polymorphism and method dispatch

Learning Objectives

Apply polymorphism in object-oriented design
Understand runtime method resolution

1.4

Override hashCode, equals, and toString methods from Object class

1 subtopics

1.4.1Object class method overriding

Learning Objectives

Override Object methods correctly
Understand and maintain the hashCode-equals contract

1.5

Create and use singleton classes and immutable classes

1 subtopics

1.5.1Design patterns: Singleton and Immutability

Learning Objectives

Implement the singleton pattern correctly
Create immutable classes following best practices

1.6

Develop code that uses static keyword on initialize blocks, variables, methods, and classes

1 subtopics

1.6.1Static members and initialization

Learning Objectives

Use static keyword appropriately
Understand static initialization sequence

Domain Hands-on Skills

Creating well-encapsulated classesImplementing inheritance hierarchiesOverriding Object class methodsDesigning singleton and immutable classes

Common Mistakes to Avoid

Breaking encapsulation with public fields
Violating hashCode-equals contract
Incorrect singleton implementation
Mutable objects in immutable classes

Advanced Java Class Design

Generics and Collections

Lambda Built-in Functional Interfaces

Java Stream API

Exceptions and Assertions

Use Java SE 8 Date/Time API

Java I/O Fundamentals

Java File I/O (NIO.2)

Java Concurrency

Building Database Applications with JDBC

Localization

How do I earn the Java SE 8 Programmer II certification?

Official Pathway Guidance

Track: Java SE Programming

Prerequisites

1Z0-808Java SE 8 Programmer IRequired
MANDATORY - Must pass 1Z0-808 before taking 1Z0-809

Next Steps

1Z0-817Java SE 11 Upgrade
1Z0-829Java SE 17 Developer

Current Level

1Z0-808Java SE 8 Programmer IAssociate
1Z0-809Java SE 8 Programmer IIProfessional

Alternative Paths

Complementary Certifications

1Z0-900

Certification Maintenance

How do I study for the 1Z0-809 Exam?

Practice the Java SE 8 Programmer II with our Exam Simulator

Free practice questions, exam guides, and real exam‑style explanations in our Planet Cert simulator.

What's changed on this exam?

Technology Coverage

Java SE 8 Long Term Support (LTS)Java SE 8

Java 8 remains relevant for enterprise applications still running on this LTS version

Released: 2014-03-18

Lambda Expressions

Stream API

Date/Time API (java.time)

Industry Trends

Java 8 remains widely deployed in enterprise environments
Many organizations still require Java 8 expertise
Newer Java versions (11, 17, 21) gaining adoption but Java 8 still dominant
Lambda expressions and Stream API fundamental to all modern Java
Concurrent programming skills increasingly important
Microservices and cloud-native Java development growing

Who should take this exam?

Required Prerequisites

Exam Code: 1Z0-808; Exam Name: Java SE 8 Programmer I; Certification: Oracle Certified Associate (OCA), Java SE 8 Programmer; Note: Must pass 1Z0-808 before taking 1Z0-809

Recommended Experience

Solid understanding of Java fundamentals
Experience with Java SE 8 features
Hands-on Java programming experience
Completion of Java SE 8 training courses

Experience Level: Intermediate To Advanced

How do I register & what's the exam fee?

Exam Cost	$[object Object] USD
Testing Centers	Pearson VUE
Online Proctoring	Available

How long is the certification valid?

Valid For	Certification does not expire, but Oracle recommends staying current with newer Java versions
Recertification	No mandatory recertification required Can upgrade to Java SE 11 by taking upgrade exam 1Z0-817 Can pursue newer Java certifications (Java SE 11, Java SE 17, etc.) Oracle recommends staying current with Java releases

What jobs can I get with this?

Career Benefits

Demonstrates professional-level Java expertise
Validates advanced Java programming skills
Recognized globally by employers
Enhances career opportunities in Java development
Shows mastery of Java SE 8 features
Prerequisite for advanced Oracle certifications

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Java SE 8 Programmer II

What's Included

Complete Exam Package

Multiple Exam Modes

Lifetime Updates

Money Back Guarantee

Exam Details

What topics are on the 1Z0-809 exam?

Java Class Design

Implement encapsulation

Implement inheritance including visibility modifiers and composition

Implement polymorphism

Override hashCode, equals, and toString methods from Object class

Create and use singleton classes and immutable classes

Develop code that uses static keyword on initialize blocks, variables, methods, and classes

Domain Hands-on Skills

Common Mistakes to Avoid

Advanced Java Class Design

Generics and Collections

Lambda Built-in Functional Interfaces

Java Stream API

Exceptions and Assertions

Use Java SE 8 Date/Time API

Java I/O Fundamentals

Java File I/O (NIO.2)

Java Concurrency

Building Database Applications with JDBC

Localization

How do I earn the Java SE 8 Programmer II certification?

Official Pathway Guidance

Prerequisites

Next Steps

Current Level

Alternative Paths

Complementary Certifications

Certification Maintenance

How do I study for the 1Z0-809 Exam?

Practice the Java SE 8 Programmer II with our Exam Simulator

Official Training

Community Resources

Hands-on Labs

Video Resources

What's changed on this exam?

Technology Coverage

Industry Trends

Who should take this exam?

Required Prerequisites

Recommended Experience

How do I register & what's the exam fee?

How long is the certification valid?

What jobs can I get with this?

Career Benefits

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