Oracle Java Certification: Shortest Way To Crack OCA 1Z0-808

OCA - Java SE 8 Programmer I - Exam Information:

• Exam Code: 1Z0-808

• Duration: 150 minutes

• Questions #: 70 (Multiple Choice / Multiple Select)

• Passing score: 65% 

Exam Curriculum:

Java Basics 

• Define the scope of variables 

• Define the structure of a Java class

• Create executable Java applications with a main method; run a Java program from the command line; produce console output

• Import other Java packages to make them accessible in your code

• Compare and contrast the features and components of Java such as: platform independence, object orientation, encapsulation, etc.

Working With Java Data Types 

• Declare and initialize variables (including casting of primitive data types)

• Differentiate between object reference variables and primitive variables

• Know how to read or write to object fields

• Explain an Object's Lifecycle (creation, "dereference by reassignment" and garbage collection)

• Develop code that uses wrapper classes such as Boolean, Double, and Integer  

Using Operators and Decision Constructs 

• Use Java operators; use parentheses to override operator precedence

• Test equality between Strings and other objects using == and equals ()

• Create if and if/else and ternary constructs 

• Use a switch statement 

Creating and Using Arrays 

• Declare, instantiate, initialize and use a one-dimensional array

• Declare, instantiate, initialize and use multi-dimensional arrays

Using Loop Constructs 

• Create and use while loops

• Create and use for loops including the enhanced for loop

• Create and use do/while loops

• Compare loop constructs

• Use break and continue  

Working with Methods and Encapsulation 

• Create methods with arguments and return values; including overloaded methods

• Apply the static keyword to methods and fields  

• Create and overload constructors; differentiate between default and user defined constructors

• Apply access modifiers

• Apply encapsulation principles to a class

• Determine the effect upon object references and primitive values when they are passed  into methods that change the values

Working with Inheritance 

• Describe inheritance and its benefits

• Develop code that makes use of polymorphism; develop code that overrides methods;  differentiate between the type of a reference and the type of an object

• Determine when casting is necessary

• Use super and this to access objects and constructors

• Use abstract classes and interfaces

Handling Exceptions 

• Differentiate among checked exceptions, unchecked exceptions, and Errors

• Create a try-catch block and determine how exceptions alter normal program flow

• Describe the advantages of Exception handling 

• Create and invoke a method that throws an exception

• Recognize common exception classes (such as NullPointerException, ArithmeticException, ArrayIndexOutOfBoundsException, ClassCastException)

Working with Selected classes from the Java API 

• Manipulate data using the StringBuilder class and its methods

• Create and manipulate Strings

• Create and manipulate calendar data using classes from java.time.LocalDateTime,  java.time.LocalDate, java.time.LocalTime, java.time.format.DateTimeFormatter, java.time.Period

• Declare and use an ArrayList of a given type 

• Write a simple Lambda expression that consumes a Lambda Predicate expression