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The following will be discussed in the ORACLE 1Z0-006 exam dumps:
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
- Declare and instantiate Java objects including nested class objects, and explain objects' - lifecycles (including creation, dereferencing by reassignment, and garbage collection)
- Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
- Understand variable scopes, apply encapsulation and make objects immutable
- Define and use fields and methods, including instance, static and overloaded methods
- Create and use enumerations
- Secure resource access including filesystems, manage policies and execute privileged code
- Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
- Create and use subclasses and superclasses, including abstract classes
- Initialize objects and their members using instance and static initialiser statements and constructors
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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 1Z0-819 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Secure Coding in Java SE Application | 5% | - Secure sensitive data - Prevent Denial of Service (DoS) attacks - Prevent SQL injection and other attacks - Validate user input |
| Topic 2: Concurrency | 10% | - Create worker threads using Runnable and Thread objects - Use ExecutorService to concurrently execute tasks - Identify potential threading problems - Use synchronized blocks and the volatile keyword - Use java.util.concurrent atomic classes and ForkJoinPool - Use parallel streams to improve performance |
| Topic 3: Working with Arrays and Collections | 8% | - Use generic types and diamond operator - Iterate through a collection - Search for elements in a collection - Filter a collection using lambda expressions - Create a list, set, map, or queue collection - Sort elements in a collection |
| Topic 4: I/O (Fundamentals and NIO2) | 7% | - Use NIO2 API to work with file systems and file attributes - Read and write console and file input/output using Java I/O system - Use Path interface to manipulate file paths - Use Stream API with files |
| Topic 5: Database Applications with JDBC | 5% | - Connect to a database using JDBC - Describe the advantages of using a connection pool - Use parameterized queries - Execute queries and process results |
| Topic 6: Working with Java data types | 12% | - Manipulate data using the StringBuilder class and its methods - Explain an object's lifecycle (creation, dereferencing via garbage collection) - Declare and initialize variables - Call methods on objects - Read or write to object fields - Create and manipulate strings - Differentiate between object reference variables and primitive variables |
| Topic 7: Java Platform Module System | 10% | - Declare module dependencies - Deploy and execute modules - Use jdeps to determine dependencies - Explain the default modules and class path - Explain the concept of module exports and requires - Migrate applications to use modules |
| Topic 8: Working with Streams and Lambda expressions | 13% | - Describe the Stream interface and pipeline - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods - Filter a collection using lambda expressions - Use the Stream API to perform terminal operations - Use functional interfaces with lambda expressions - Use method references with streams |
| Topic 9: Annotations | 5% | - Apply standard annotations to classes and methods - Describe the purpose of annotations - Create custom annotations |
| Topic 10: Exception Handling and Localization | 10% | - Create try-catch blocks and understand exception propagation - Use assertions - Use resource bundles and locale classes for internationalization - Use standard exception classes - Describe the advantages of exception handling - Create and throw custom exceptions |
| Topic 11: Working with Java OOP | 15% | - Create inner classes and use them within other classes - Apply the final keyword to classes, methods, and fields - Use abstract classes and interfaces - Implement inheritance - Apply the static keyword to methods and fields - Implement polymorphism - Implement encapsulation |
| Topic 12: Controlling Program Flow | 10% | - Use Java control statements - Use for, while, and do/while loops - Use switch statements - Use break and continue statements - Use if and if/else statements |
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