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Average Salary of Java SE 11 Developer Exam Number: 1Z0-819 Certified Professionals
The average salary is between $71k and $103k.
For more info read reference:
1Z0-006 Official Certification Site Oracle Cloud Learning Resources
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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.
Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913
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Oracle 1Z0-819日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Annotations | 5% | - Create custom annotations - Describe the purpose of annotations - Apply standard annotations to classes and methods |
| Working with Java data types | 12% | - Call methods on objects - Differentiate between object reference variables and primitive variables - Manipulate data using the StringBuilder class and its methods - Explain an object's lifecycle (creation, dereferencing via garbage collection) - Read or write to object fields - Declare and initialize variables - Create and manipulate strings |
| I/O (Fundamentals and NIO2) | 7% | - Read and write console and file input/output using Java I/O system - Use Path interface to manipulate file paths - Use NIO2 API to work with file systems and file attributes - Use Stream API with files |
| Java Platform Module System | 10% | - Migrate applications to use modules - Deploy and execute modules - Use jdeps to determine dependencies - Explain the default modules and class path - Explain the concept of module exports and requires - Declare module dependencies |
| 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 |
| Working with Java OOP | 15% | - Apply the static keyword to methods and fields - Implement inheritance - Implement polymorphism - Implement encapsulation - Use abstract classes and interfaces - Apply the final keyword to classes, methods, and fields - Create inner classes and use them within other classes |
| Controlling Program Flow | 10% | - Use switch statements - Use if and if/else statements - Use Java control statements - Use for, while, and do/while loops - Use break and continue statements |
| Concurrency | 10% | - Identify potential threading problems - Create worker threads using Runnable and Thread objects - Use synchronized blocks and the volatile keyword - Use java.util.concurrent atomic classes and ForkJoinPool - Use ExecutorService to concurrently execute tasks - Use parallel streams to improve performance |
| Working with Streams and Lambda expressions | 13% | - Describe the Stream interface and pipeline - Use the Stream API to perform terminal operations - Use functional interfaces with lambda expressions - Filter a collection using lambda expressions - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods - Use method references with streams |
| Exception Handling and Localization | 10% | - Use assertions - Use resource bundles and locale classes for internationalization - Use standard exception classes - Create and throw custom exceptions - Describe the advantages of exception handling - Create try-catch blocks and understand exception propagation |
| Database Applications with JDBC | 5% | - Describe the advantages of using a connection pool - Connect to a database using JDBC - Use parameterized queries - Execute queries and process results |
| Working with Arrays and Collections | 8% | - Search for elements in a collection - Filter a collection using lambda expressions - Iterate through a collection - Use generic types and diamond operator - Sort elements in a collection - Create a list, set, map, or queue collection |
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