Oracle : 1z1-819 Questions & Answers
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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 pdf:
- Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
- Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams
- Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API
- Sort collections and arrays using Comparator and Comparable interfaces
- Develop thread-safe code, using different locking mechanisms and java.util.concurrent API
- Use a Java array and List, Set, Map and Deque collections, including convenience methods
- Use generics, including wildcards
- Use Java Streams to filter, transform and process data
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:
- Implement serialization and deserialization techniques on Java objects
- 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)
- Initialize objects and their members using instance and static initialiser statements and constructors
- Handle file system objects using java.nio.file API
- Connect to and perform database SQL operations, process query results using JDBC API Annotations
- Deploy and execute modular applications, including automatic modules
- Create and use subclasses and superclasses, including abstract classes
- Define and use fields and methods, including instance, static and overloaded methods
- Understand variable scopes, apply encapsulation and make objects immutable
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
- Create, apply, and process annotations
- Declare, use, and expose modules, including the use of services
- Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
- Read and write console and file data using I/O Streams
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What is Java SE 11 Developer Exam Number: 1Z0-819 Certification Exam and Retake policy
Oracle Cloud Certification credentials are only valid for a period of 18 months from the date you earn the credential. The certification will become inactive at the end of 18 months. However, for Oracle candidates, it is necessary to hold an active certification in order to have access to various certification benefits including, using Oracle certification logos, certificates, scoring reports, digital badges, and certification verification.
To stay current, candidates have to re-certify themselves with the latest version of the exam. Oracle Cloud Certifications include various titles with levels that are Oracle Certified Associate, Specialist, and Professional. Moreover, the Oracle Cloud Certifications are updated continuously throughout the year for keeping current with major product and service releases and re-released on an annual basis with a new title.
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: I/O (Fundamentals and NIO2) | 7% | - Use Path interface to manipulate file paths - Use Stream API with files - Read and write console and file input/output using Java I/O system - Use NIO2 API to work with file systems and file attributes |
| Topic 2: Java Platform Module System | 10% | - Explain the default modules and class path - Use jdeps to determine dependencies - Deploy and execute modules - Explain the concept of module exports and requires - Declare module dependencies - Migrate applications to use modules |
| Topic 3: Concurrency | 10% | - Use java.util.concurrent atomic classes and ForkJoinPool - Create worker threads using Runnable and Thread objects - Use parallel streams to improve performance - Use synchronized blocks and the volatile keyword - Use ExecutorService to concurrently execute tasks - Identify potential threading problems |
| Topic 4: Secure Coding in Java SE Application | 5% | - Validate user input - Prevent Denial of Service (DoS) attacks - Secure sensitive data - Prevent SQL injection and other attacks |
| Topic 5: Working with Streams and Lambda expressions | 13% | - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods - Use functional interfaces with lambda expressions - Use method references with streams - Describe the Stream interface and pipeline - Use the Stream API to perform terminal operations - Filter a collection using lambda expressions |
| Topic 6: Database Applications with JDBC | 5% | - Describe the advantages of using a connection pool - Execute queries and process results - Connect to a database using JDBC - Use parameterized queries |
| Topic 7: Exception Handling and Localization | 10% | - Create try-catch blocks and understand exception propagation - Use standard exception classes - Use assertions - Create and throw custom exceptions - Describe the advantages of exception handling - Use resource bundles and locale classes for internationalization |
| Topic 8: Annotations | 5% | - Create custom annotations - Apply standard annotations to classes and methods - Describe the purpose of annotations |
| Topic 9: Controlling Program Flow | 10% | - Use switch statements - Use if and if/else statements - Use Java control statements - Use for, while, and do/while loops - Use break and continue statements |
| Topic 10: Working with Arrays and Collections | 8% | - Sort elements in a collection - Iterate through a collection - Create a list, set, map, or queue collection - Use generic types and diamond operator - Filter a collection using lambda expressions - Search for elements in a collection |
| Topic 11: Working with Java data types | 12% | - Call methods on objects - Read or write to object fields - Create and manipulate strings - Explain an object's lifecycle (creation, dereferencing via garbage collection) - Declare and initialize variables - Manipulate data using the StringBuilder class and its methods - Differentiate between object reference variables and primitive variables |
| Topic 12: Working with Java OOP | 15% | - Apply the static keyword to methods and fields - Use abstract classes and interfaces - Implement inheritance - Create inner classes and use them within other classes - Implement encapsulation - Apply the final keyword to classes, methods, and fields - Implement polymorphism |
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