Java 8 OCA (1Z0-808) Course

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Mastering Critical Core Java SE 8 OCA (1Z0-808) Concepts

What you will learn

Java Basics – scope, class structure, Java features, identifiers and reserved words.

Working with Java Data Types – primitives, wrappers, operators, String immutability, StringBuilder

Controlling Program Flow – conditional (if/switch), loops (while/do-while/for), break, continue.

Working with Methods and Encapsulation – static, constructors, access modifiers, call-by-value.

Java Object Oriented Approach – inheritance, overloading/overriding, polymorphism, abstract, constructors, upcasting/downcasting, interfaces, enums, instanceof

Exception Handling – try/catch/finally, try-with-resources, suppressing exceptions, exception signatures and inheritance, custom exceptions

Arrays – declaring, initialising, anonymous arrays, reference assignments, 2D arrays, arrays with wrappers


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Working with Selected classes from the Java API – ArrayLists, Lamba expressions, Predicate Lambdas, Calendar Data manipulation

Description

This course is a systematic approach to the Oracle Java 8 1Z0-808 (OCA) Certification exam. All of the topics on the syllabus on Oracles website are covered.

Topics include:

  • Java Basics
  • Working with Java Data Types
  • Controlling Program Flow
  • Working with Methods and Encapsulation
  • Java Object Oriented Approach
  • Exception Handling
  • Arrays
  • Working with Selected classes from the Java API

I have included 45+ (more coming) Oracle style multiple choice questions as part of the course. These come from the excellent Enthuware tool. Each question contains a video explaining the answer. This course started out as a Java 11 course (1Z0-819) and as a result many of the questions are from the Enthuware Java 11 question bank. However, I have removed the Java 11 specific questions and left only questions relating to Java 8 OCA. Note: I have not removed some questions which trivially use the “var” keyword (introduced in Java 10) – I have included a comment on these lines to explain the Java 8 equivalent, so that you can answer the question.

As well as using an IDE to explain concepts, I use a whiteboard wherever I can. I find it an excellent learning tool; particularly around the topics of:

  • Java objects versus references
  • String and wrapper-class immutability
  • Arrays
  • Inheritance – upcasting, downcasting, ClassCastExceptions (why they occur)
  • Garbage collection

I am a lecturer since 2002 and I have taught the OCA (and OCP) syllabus since 2013 on behalf of a highly regarded software company. On completion of my training, graduates then face the company’s own internal Java Certification exam (similar in style to Oracle’s). I have no visibility into the questions they will face. It is a 3 hour long intensive exam. The company are delighted with the pass rate (100% since year 1).

I love teaching and this course has all my experience in explaining the critical fundamental concepts of Java. In addition, I have a strong attention to detail which lends itself perfectly to the Oracle Java Certification exams. I am delighted that Enthuware, in their explanations, have linked to my YouTube channel.

Please contact me directly at [email protected] for a heavily discounted coupon.

English
language

Content

Java Basics
Class Structure
Scope
Console IO
Java Features
Identifiers and Reserved Words
Working with Java Data Types
Primitives
Wrapper classes
Operators – Unary, Arithmetic
Operators – Relational, Logical
Operators – Ternary, Compound Assignment
String Immutability
String Equality
String Chaining
String API
StringBuilder Mutability
StringBuilder API
Working with Java Data Types
Controlling Program Flow
Conditional Logic – ‘if’ statements
Conditional Logic – ‘switch’ statements
Iteration – while and do-while loops
Iteration – traditional ‘for’ loops
Iteration – enhanced ‘for’ loops
‘break’ and ‘continue’ statements
Controlling Program Flow
Working with Methods and Encapsulation
Methods (General)
‘static’ keyword
Constructors
Encapsulation and Access Modifiers
Call-By-Value
Java Object Oriented Approach
Notes – Scope, classes, encapsulation, method overloading, ‘this’ reference
Code – Scope, classes, encapsulation, method overloading, ‘this’ reference
Whiteboard – Scope, classes, encapsulation, method overloading, ‘this’ reference
Object Initialisation
Immutable Classes and Call-By-Value
Immutable Example – Code + Diagrams (Advanced Encapsulation/Defensive Copying)
String versus StringBuilder Example
Inheritance – polymorphism, overriding, overloading (1 of 2)
Inheritance – polymorphism, overriding, overloading (2 of 2)
Inheritance – equals() and instanceof
Inheritance – super() and super.
Inheritance – protected
Inheritance – Constructors
Inheritance – abstract methods/classes and casting
Inheritance – upcasting/downcasting
Interfaces – general
Interfaces – default and static methods
Interfaces – multiple implementation inheritance
Interfaces – Functional Interfaces
Enumerations – simple
Enumerations – complex
Object Lifecycle
Java Object Oriented Approach
Exception Handling
Introduction
try-catch
finally
try-with-resources
try-with-resources (suppressing exceptions)
Exception signatures when overriding a method
Custom Exceptions
Exception Handling
Arrays
Declarations
Initialisation
Anonymous arrays
Array reference assignments
Sample 2D Array Question – 2.1398
Arrays with Wrapper elements – Object Creation and Garbage Collection
Arrays
Working with Selected classes from the Java API
ArrayLists
Lambdas – Introduction
Lambdas – using a custom Functional Interface (in code)
Lambdas – using Predicate (in code)
Calendar Data – Introduction
Calendar Data – of(), now() and parse()
Calendar Data – formatting
Calendar Data – Period
Working with Selected classes from the Java API
Quiz Questions Explained
2.950
2.959
2.964
2.984
2.3355
2.3356
2.3357
2.3595
2.3141
2.1102
2.3319
2.1818
2.1817
2.1819
2.3070
2.2022
2.3140
2.1319
2.968
2.935
2.3570
2.1190
2.3139
2.1123
2.3350
2.919
2.1072
2.1170
1.926
2.970
3.1486
2.960
2.1391
2.963
2.3531
2.1395
2.1111
2.991
2.986
2.3229
2.1173
2.971
2.946
2.987
2.3102
2.1471
2.1133
2.1725
2.3106
2.1112
2.1305
2.1463
2.988
2.1054
2.1453
2.1432
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