Oracle : 1Z0-819 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:
- Handle text using String and StringBuilder classes
- Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting
- Use local variable type inference, including as lambda parameters
Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913
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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.
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Oracle 1Z0-819 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Exception Handling and Localization | 10% | - Describe the advantages of exception handling - Use standard exception classes - Use resource bundles and locale classes for internationalization - Create try-catch blocks and understand exception propagation - Use assertions - Create and throw custom exceptions |
| Annotations | 5% | - Create custom annotations - Apply standard annotations to classes and methods - Describe the purpose of annotations |
| I/O (Fundamentals and NIO2) | 7% | - Use Stream API with files - Use Path interface to manipulate file paths - Read and write console and file input/output using Java I/O system - Use NIO2 API to work with file systems and file attributes |
| Concurrency | 10% | - Use synchronized blocks and the volatile keyword - Use ExecutorService to concurrently execute tasks - Identify potential threading problems - Create worker threads using Runnable and Thread objects - Use parallel streams to improve performance - 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 switch statements - Use Java control statements - Use break and continue statements |
| Working with Streams and Lambda expressions | 13% | - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods - Describe the Stream interface and pipeline - 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 |
| Secure Coding in Java SE Application | 5% | - Prevent SQL injection and other attacks - Prevent Denial of Service (DoS) attacks - Validate user input - Secure sensitive data |
| Java Platform Module System | 10% | - Declare module dependencies - Migrate applications to use modules - Explain the concept of module exports and requires - Explain the default modules and class path - Use jdeps to determine dependencies - Deploy and execute modules |
| Database Applications with JDBC | 5% | - Use parameterized queries - Connect to a database using JDBC - Describe the advantages of using a connection pool - Execute queries and process results |
| Working with Java OOP | 15% | - Implement encapsulation - Use abstract classes and interfaces - Create inner classes and use them within other classes - Implement polymorphism - Implement inheritance - Apply the static keyword to methods and fields - Apply the final keyword to classes, methods, and fields |
| Working with Java data types | 12% | - Manipulate data using the StringBuilder class and its methods - 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 - Explain an object's lifecycle (creation, dereferencing via garbage collection) |
| Working with Arrays and Collections | 8% | - Search for elements in a collection - Sort elements in a collection - Create a list, set, map, or queue collection - Filter a collection using lambda expressions - Iterate through a collection - Use generic types and diamond operator |
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