Java SE 11 Developer - 1Z0-819 2021 April 2021, I got my certification, so, I decided to create these tests based on my experience. I created these tests trying to simulate as much as I could, the type of question and types of responses. You will find questions for each topic of the certification. Certification Information: Format: Multiple ChoiceDuration: 90 MinutesNumber of Questions: 50Passing Score: 68%Practice Exam Information: Format: Multiple ChoiceNumber of Questions: 100Passing Score: 68%Exam Topics: Domain 1: Working with primitives, enumerators, text values & wrapper classesUtilizing wrapper classes and primitives alongside operators, casting, parentheses and type promotionBest practices for creating loops, switch statements and if/else statements and using themSkills for creating enumerations and using themManagement of text through StringBuilder & Strings classesDomain 2: Exception HandlingManaging exceptions in Java programs through different tools such as multi-catch statements, try/catch/finally clauses and try-with-resource statementsCreating custom exceptions and their ideal utilizationDomain 3: Operations with Lambda expressions and StreamsUtilization of Java Streams for data operations such as filtering, processing, and transformationImplementation of Functional Interfaces by leveraging the functionalities of Lambda Expressions, alongside interfaces in the Java. util. function packageUsing Streams along with Parallel Streams for various tasks such as reduction & decomposition as well as partitioning and groupingDomain 4: ConcurrencyCreation of worker threads through Callable, Runnable alongside using ExecutorService such as Java. util. concurrent API for concurrent execution of tasksDevelopment of thread-safe code and use of concurrent collectionsDomain 5: Coding Security for Java SE Application DevelopmentImplementation of data integrity guidelines for processes such as inclusion, input validation, and injectionsPrevention of external attacks on code through restrictions on extensibility and accessibility alongside ensuring ideal management of mutability and input validationRestricting Denial of Service in Java applicationsDomain 6: LocalizationThis domain tests candidates knowledge for ensuring localization in Java applications by leveraging resource bundles, Locale, Java APIs formatting messages, numbers, and dates. Domain 7: Java Object-Oriented ApproachDeclaration and instantiation of Java objectsFields and methodsInitialization statementsConstructors, variable scopes and encapsulationSubclasses & superclassesPolymorphismLocal variable type inferenceFunctional and private interfacesDomain 8: Arrays & CollectionsGeneric classes and methods with wildcards and diamond notationUse of List, Map, Deque and Set collectionsSorting arrays & collectionsDomain 9: Java Platform Module System, Shifting to modular application designDeployment and execution of modular applicationsDeclaration of modules and enabling access between themDomain 10: Java I/O APIReading and writing console & file data by using I/O systems. Management of file system objects by leveraging java. nio. file APIImplementing serialization techniques for Java objectsDomain 11: Database Applications with JDBCConnect to and perform database operations using PreparedStatementDomain 12: AnnotationsCreate, apply, and process annotations
