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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:
- Declare 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 methods
- Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
- Secure resource access including filesystems, manage policies and execute privileged code
- Initialize objects and their members using instance and static initialiser statements and constructors
- Understand variable scopes, apply encapsulation and make objects immutable
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
- Create and use enumerations
- Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
- Create and use subclasses and superclasses, including abstract classes
Certification Path for Java SE 11 Developer Exam Number: 1Z0-819
Java SE 11 Developer Exam Number: 1Z0-819 is a fundamental exam. Successful completion by candidates will allow them to achieve Oracle Certified Professional: Java SE 11 Developer.
Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913
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Oracle 1Z0-819 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Java Platform Module System | 10% | - Declare module dependencies - Explain the default modules and class path - Explain the concept of module exports and requires - Use jdeps to determine dependencies - Migrate applications to use modules - Deploy and execute modules |
| Database Applications with JDBC | 5% | - Execute queries and process results - Describe the advantages of using a connection pool - Connect to a database using JDBC - Use parameterized queries |
| Annotations | 5% | - Apply standard annotations to classes and methods - Create custom annotations - Describe the purpose of annotations |
| Secure Coding in Java SE Application | 5% | - Validate user input - Prevent SQL injection and other attacks - Prevent Denial of Service (DoS) attacks - Secure sensitive data |
| Concurrency | 10% | - Use parallel streams to improve performance - Create worker threads using Runnable and Thread objects - Identify potential threading problems - Use ExecutorService to concurrently execute tasks - Use synchronized blocks and the volatile keyword - Use java.util.concurrent atomic classes and ForkJoinPool |
| Controlling Program Flow | 10% | - Use for, while, and do/while loops - Use if and if/else statements - Use break and continue statements - Use switch statements - Use Java control statements |
| Exception Handling and Localization | 10% | - Describe the advantages of exception handling - Create and throw custom exceptions - Use resource bundles and locale classes for internationalization - Use standard exception classes - Use assertions - Create try-catch blocks and understand exception propagation |
| Working with Streams and Lambda expressions | 13% | - Use method references with streams - Use the Stream API to perform terminal operations - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods - Use functional interfaces with lambda expressions - Describe the Stream interface and pipeline - Filter a collection using lambda expressions |
| Working with Arrays and Collections | 8% | - Search for elements in a collection - Create a list, set, map, or queue collection - Sort elements in a collection - Use generic types and diamond operator - Filter a collection using lambda expressions - Iterate through a collection |
| Working with Java data types | 12% | - Call methods on objects - Differentiate between object reference variables and primitive variables - Declare and initialize variables - Explain an object's lifecycle (creation, dereferencing via garbage collection) - Manipulate data using the StringBuilder class and its methods - Create and manipulate strings - Read or write to object fields |
| I/O (Fundamentals and NIO2) | 7% | - Use NIO2 API to work with file systems and file attributes - 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 |
| Working with Java OOP | 15% | - Apply the final keyword to classes, methods, and fields - Create inner classes and use them within other classes - Apply the static keyword to methods and fields - Implement inheritance - Implement polymorphism - Implement encapsulation - Use abstract classes and interfaces |
