1Z0-809: Java SE 8 Programmer 2
Om ten volle te profiteren van de voordelen van een professionele Java SE 8-ontwikkelaar, moet u slagen voor twee examens.…
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1Z0-808: Java SE 8 Programmer 1
De Java SE 8 Oracle Certified Associate (OCA)-certificering helpt u een fundamenteel begrip van Java op te bouwen en het behalen van deze certificeringsreferentie is de eerste van twee stappen om aan te tonen dat u over de vaardigheden op hoog niveau, die nodig zijn om een professionele Java-ontwikkelaar te worden, beschikt.
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Inhoud
- 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
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Examen ID: 1Z0-808
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