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Become a Java Pro! I created this practice exam based on my personal experience taking the exam. There are only 100 questions here, but after you have passed them all, carefully read all the explanations, you can safely go to the exam and pass it successfully. There are no questions of the same type in these practice tests, as you need to understand the concepts presented here in order to successfully pass the exam.Real Exam info:Exam number and titler: 1Z0-819: Java SE 11 DeveloperExam Price: $245Format: Multiple ChoiceNumber of Questions: 50Duration: 90 minutesPassing score: 68%Practice Exam info:Real exam experienceQuestions with a complete explanationFormat: Multiple ChoiceNumber of Questions: 2 practice tests, 50 questions eachDuration: 90 minutesPassing score: 68%This practice exam covers all topics covered in the Java SE 11 Developer exam:Working with Java data typesUse primitives and wrapper classes, including, operators, parentheses, type promotion, and castingHandle text using String and StringBuilder classesUse local variable type inference, including lambda parametersControlling Program FlowCreate and use loops, if/else, and switch statementsJava Object-Oriented ApproachDeclare 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 methodsInitialize objects and their members using instance and static initializer statements and constructorsUnderstand variable scopes, apply encapsulation and make objects immutableCreate and use subclasses and superclasses, including abstract classesUtilize polymorphism and casting to call methods, differentiate object type versus reference typeCreate and use interfaces, identify functional interfaces, and utilize private, static, and default methodsCreate and use enumerationsException HandlingHandle exceptions using try/catch/finally clauses, try-with-resource, and multi-catch statementsCreate and use custom exceptionsWorking with Arrays and CollectionsUse generics, including wildcardsUse a Java array and List, Set, Map, and Deque collections, including convenience methodsSort collections and arrays using Comparator and Comparable interfacesWorking with Streams and Lambda expressionsImplement functional interfaces using lambda expressions, including interfaces from the java.util.function packageUse Java Streams to filter, transform and process dataPerform decomposition and reduction, including grouping and partitioning on sequential and parallel streamsJava Platform Module SystemDeploy and execute modular applications, including automatic modulesDeclare, use, and expose modules, including the use of servicesConcurrencyCreate worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent APIDevelop thread-safe code, using different locking mechanisms and java.util.concurrent APIJava I/O APIRead and write console and file data using I/O StreamsImplement serialization and deserialization techniques on Java objectsHandle file system objects using java.nio.file APISecure Coding in Java SE ApplicationDevelop code that mitigates security threats such as denial of service, code injection, input validation and ensures data integritySecure resource access including filesystems, manage policies and execute privileged codeDatabase Applications with JDBCConnect to and perform database SQL operations, process query results using JDBC APILocalizationImplement Localization using Locale, resource bundles, and Java APIs to parse and format messages, dates, and numbersAnnotationsCreate, apply, and process annotations

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