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- Use Java Streams to filter, transform and process data
- Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
- Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API
- Develop thread-safe code, using different locking mechanisms and java.util.concurrent API
- Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams
- Use generics, including wildcards
- Sort collections and arrays using Comparator and Comparable interfaces
- Use a Java array and List, Set, Map and Deque collections, including convenience methods
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Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913
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How much Java SE 11 Developer Exam Number: 1Z0-819 costs
- No. of Questions: 60 Questions
- Passing Score: 60% or higher
- Examination Fees: $250 USD
- Types of questions: Performance Based Questions
- Length of Exam: 85 min
- Examination Name: Java SE 11 Developer Exam Number: 1Z0-819
Oracle 1z1-819 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| 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 |
| Working with Streams and Lambda expressions | 13% | - Filter a collection using lambda expressions - Use method references with streams - Use the Stream API to perform terminal operations - Describe the Stream interface and pipeline - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods - Use functional interfaces with lambda expressions |
| Java Platform Module System | 10% | - Migrate applications to use modules - Declare module dependencies - Use jdeps to determine dependencies - Explain the concept of module exports and requires - Explain the default modules and class path - Deploy and execute modules |
| Controlling Program Flow | 10% | - Use switch statements - Use Java control statements - Use if and if/else statements - Use for, while, and do/while loops - Use break and continue statements |
| Concurrency | 10% | - Use parallel streams to improve performance - Use ExecutorService to concurrently execute tasks - Use java.util.concurrent atomic classes and ForkJoinPool - Create worker threads using Runnable and Thread objects - Identify potential threading problems - Use synchronized blocks and the volatile keyword |
| Working with Java data types | 12% | - Declare and initialize variables - Create and manipulate strings - Explain an object's lifecycle (creation, dereferencing via garbage collection) - Read or write to object fields - Manipulate data using the StringBuilder class and its methods - Call methods on objects - Differentiate between object reference variables and primitive variables |
| Exception Handling and Localization | 10% | - Describe the advantages of exception handling - Create and throw custom exceptions - Create try-catch blocks and understand exception propagation - Use resource bundles and locale classes for internationalization - Use standard exception classes - Use assertions |
| I/O (Fundamentals and NIO2) | 7% | - Read and write console and file input/output using Java I/O system - Use NIO2 API to work with file systems and file attributes - Use Path interface to manipulate file paths - Use Stream API with files |
| Working with Arrays and Collections | 8% | - Iterate through a collection - Use generic types and diamond operator - Filter a collection using lambda expressions - Search for elements in a collection - Create a list, set, map, or queue collection - Sort elements in a collection |
| Database Applications with JDBC | 5% | - Describe the advantages of using a connection pool - Execute queries and process results - Use parameterized queries - Connect to a database using JDBC |
| Annotations | 5% | - Apply standard annotations to classes and methods - Describe the purpose of annotations - Create custom annotations |
| Working with Java OOP | 15% | - Implement inheritance - Create inner classes and use them within other classes - Implement encapsulation - Apply the static keyword to methods and fields - Apply the final keyword to classes, methods, and fields - Use abstract classes and interfaces - Implement polymorphism |
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