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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.
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Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913
Oracle 1z1-819 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Database Applications with JDBC | 5% | - Use parameterized queries - Describe the advantages of using a connection pool - Execute queries and process results - Connect to a database using JDBC |
| Controlling Program Flow | 10% | - Use for, while, and do/while loops - Use if and if/else statements - Use break and continue statements - Use Java control statements - Use switch statements |
| Working with Java OOP | 15% | - Implement polymorphism - Implement inheritance - Create inner classes and use them within other classes - Apply the static keyword to methods and fields - Implement encapsulation - Use abstract classes and interfaces - Apply the final keyword to classes, methods, and fields |
| Exception Handling and Localization | 10% | - Describe the advantages of exception handling - Use assertions - Use standard exception classes - Create try-catch blocks and understand exception propagation - Create and throw custom exceptions - Use resource bundles and locale classes for internationalization |
| Working with Java data types | 12% | - Create and manipulate strings - Declare and initialize variables - Read or write to object fields - Call methods on objects - Manipulate data using the StringBuilder class and its methods - Differentiate between object reference variables and primitive variables - Explain an object's lifecycle (creation, dereferencing via garbage collection) |
| Concurrency | 10% | - Use java.util.concurrent atomic classes and ForkJoinPool - Identify potential threading problems - Use synchronized blocks and the volatile keyword - Use parallel streams to improve performance - Create worker threads using Runnable and Thread objects - Use ExecutorService to concurrently execute tasks |
| Working with Arrays and Collections | 8% | - Iterate through a collection - Search for elements in a collection - Sort elements in a collection - Use generic types and diamond operator - Create a list, set, map, or queue collection - Filter a collection using lambda expressions |
| I/O (Fundamentals and NIO2) | 7% | - Use Path interface to manipulate file paths - Use Stream API with files - Use NIO2 API to work with file systems and file attributes - Read and write console and file input/output using Java I/O system |
| Working with Streams and Lambda expressions | 13% | - Describe the Stream interface and pipeline - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods - Use functional interfaces with lambda expressions - Use method references with streams - Filter a collection using lambda expressions - Use the Stream API to perform terminal operations |
| Java Platform Module System | 10% | - Migrate applications to use modules - Declare module dependencies - Explain the concept of module exports and requires - Use jdeps to determine dependencies - Explain the default modules and class path - Deploy and execute modules |
| Secure Coding in Java SE Application | 5% | - Prevent SQL injection and other attacks - Validate user input - Secure sensitive data - Prevent Denial of Service (DoS) attacks |
| Annotations | 5% | - Create custom annotations - Describe the purpose of annotations - Apply standard annotations to classes and methods |
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