Difficulty in Attempting Java SE 11 Developer Exam Number: 1Z0-819
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Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819
The following will be discussed in the ORACLE 1Z0-006 exam dumps:
- Deploy and execute modular applications, including automatic modules
- Define and use fields and methods, including instance, static and overloaded methods
- Create, apply, and process annotations
- Connect to and perform database SQL operations, process query results using JDBC API Annotations
- Handle file system objects using java.nio.file API
- Read and write console and file data using I/O Streams
- Declare, use, and expose modules, including the use of services
- 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 subclasses and superclasses, including abstract classes
- Implement serialization and deserialization techniques on Java objects
- 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 enumerations
- Declare and instantiate Java objects including nested class objects, and explain objects' lifecycles (including creation, dereferencing by reassignment, and garbage collection)
Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913
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Oracle 1z1-819 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Working with Java Data Types | 10-15% | - Use primitives and wrapper classes, including operators, parentheses, type promotion and casting - Manipulate numeric values and formatting - Handle text using String, StringBuilder and StringBuffer classes |
| Topic 2: Exception Handling and Assertions | 8-12% | - Use try-catch-finally, try-with-resources, throw and throws - Create custom exceptions and use standard exceptions - Use assertions appropriately |
| Topic 3: Java Object-Oriented Approach | 15-20% | - Overload and override methods, use constructors and initializers - Use local variable type inference - Declare and instantiate classes, interfaces, abstract classes and nested classes - Apply encapsulation, inheritance, polymorphism and abstraction |
| Topic 4: Java Platform Module System | 8-12% | - Use automatic modules and unnamed modules - Define modules, module declarations, requires, exports, opens, uses and provides - Compile, package and run modular applications |
| Topic 5: Concurrency | 8-12% | - Use synchronization, locks, atomic variables and concurrent collections - Create and manage threads, use ExecutorService, Callable and Future - Use parallel streams and CompletableFuture |
| Topic 6: Arrays and Collections | 12-18% | - Sort and search collections and arrays - Create and manipulate arrays, lists, sets, maps, queues and deques - Use generics, wildcards and diamond notation |
| Topic 7: Secure Coding and Localization | 5-8% | - Apply secure coding practices, input validation and data protection - Use Locale, ResourceBundle and formatting APIs for internationalization |
| Topic 8: Java I/O and NIO.2 | 8-12% | - Manage files, directories and file attributes with java.nio.file API - Implement serialization and deserialization - Read and write data using streams, readers, writers and channels |
| Topic 9: Lambda Expressions and Streams | 12-18% | - Define and use functional interfaces and lambda expressions - Create and use stream pipelines, including intermediate and terminal operations - Use Optional class and primitive type streams |
| Topic 10: JDBC Database Access | 5-8% | - Process result sets, manage transactions and resources - Connect to databases, execute queries and updates |
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