Java SE 11 Developer



Java SE 11 Developer



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Exam Number: 1Z0-819
Exam Product Version: Java SE
Dauer: 90 Minuten
Anzahl der Fragen: 50
Erforderliche Punktzahl: 68%
Gültig für: Exam has been validated against Java 11
Format: Multiple Choice
Java SE 11 Programmer I & Java SE 11 Programmer II retire on 01-OCT-2020 and are replaced by Java SE 11 Developer | 1Z0-819

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Exam Preparation:

  • Java SE 8-11 Zertifizierung I & II Vorbereitungsworkshop

  • Additional Information & Resources


    Exam Topics

    Working with Java data types
    • Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting
    • Handle text using String and StringBuilder classes
    • Use local variable type inference, including as lambda parameters
    Java Object-Oriented Approach
    • Declare and instantiate Java objects including nested class objects, and explain objects' lifecycles (including creation, dereferencing by reassignment, and garbage collection)
    • Define and use fields and methods, including instance, static and overloaded methods
    • Initialize objects and their members using instance and static initialiser statements and constructors
    • Understand variable scopes, apply encapsulation and make objects immutable
    • Create and use subclasses and superclasses, including abstract classes
    • Utilize polymorphism and casting to call methods, differentiate object type versus reference type
    • Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
    • Create and use enumerations
    Working with Arrays and Collections
    • Use generics, including wildcards
    • Use a Java array and List, Set, Map and Deque collections, including convenience methods
    • Sort collections and arrays using Comparator and Comparable interfaces
    Java Platform Module System
    • Deploy and execute modular applications, including automatic modules
    • Declare, use, and expose modules, including the use of services
    Java I/O API
    • Read and write console and file data using I/O Streams
    • Implement serialization and deserialization techniques on Java objects
    • Handle file system objects using java.nio.file API
    Database Applications with JDBC
    • Connect to and perform database SQL operations, process query results using JDBC API
    Annotations
    • Create, apply, and process annotations
    Controlling Program Flow
    • Create and use loops, if/else, and switch statements
    Exception Handling
    • Handle exceptions using try/catch/finally clauses, try-with-resource, and multi-catch statements
    • Create and use custom exceptions
    Working with Streams and Lambda expressions
    • Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
    • Use Java Streams to filter, transform and process data
    • Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams
    Concurrency
    • Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API
    • Develop thread-safe code, using different locking mechanisms and java.util.concurrent API
    Secure Coding in Java SE Application
    • Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
    • Secure resource access including filesystems, manage policies and execute privileged code
    Localization
    • Implement Localization using Locale, resource bundles, and Java APIs to parse and format messages, dates, and numbers