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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.
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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 file system objects using java.nio.file API
- 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
- Read and write console and file data using I/O Streams
- Deploy and execute modular applications, including automatic modules
- Declare, use, and expose modules, including the use of services
- Declare and instantiate Java objects including nested class objects, and explain objects' lifecycles (including creation, dereferencing by reassignment, and garbage collection)
- Create and use enumerations
- Create, apply, and process annotations
- Implement serialization and deserialization techniques on Java objects
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
- Understand variable scopes, apply encapsulation and make objects immutable
- Initialize objects and their members using instance and static initialiser statements and constructors
- Create and use subclasses and superclasses, including abstract classes
- Connect to and perform database SQL operations, process query results using JDBC API Annotations
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 |
|---|---|---|
| Topic 1: Working with Arrays and Collections | 8% | - Use generic types and diamond operator - Create a list, set, map, or queue collection - Filter a collection using lambda expressions - Iterate through a collection - Search for elements in a collection - Sort elements in a collection |
| Topic 2: Exception Handling and Localization | 10% | - Use resource bundles and locale classes for internationalization - Describe the advantages of exception handling - Use standard exception classes - Create try-catch blocks and understand exception propagation - Create and throw custom exceptions - Use assertions |
| Topic 3: 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 |
| Topic 4: Java Platform Module System | 10% | - Deploy and execute modules - Migrate applications to use modules - Declare module dependencies - Explain the concept of module exports and requires - Use jdeps to determine dependencies - Explain the default modules and class path |
| Topic 5: 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 6: Secure Coding in Java SE Application | 5% | - Validate user input - Prevent Denial of Service (DoS) attacks - Secure sensitive data - Prevent SQL injection and other attacks |
| Topic 7: Working with Streams and Lambda expressions | 13% | - Describe the Stream interface and pipeline - Use functional interfaces with lambda expressions - Filter a collection using lambda expressions - Use method references with streams - Use the Stream API to perform terminal operations - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods |
| Topic 8: Concurrency | 10% | - Create worker threads using Runnable and Thread objects - Use ExecutorService to concurrently execute tasks - Use synchronized blocks and the volatile keyword - Use parallel streams to improve performance - Identify potential threading problems - Use java.util.concurrent atomic classes and ForkJoinPool |
| Topic 9: Working with Java data types | 12% | - Differentiate between object reference variables and primitive variables - Explain an object's lifecycle (creation, dereferencing via garbage collection) - Call methods on objects - Read or write to object fields - Create and manipulate strings - Declare and initialize variables - Manipulate data using the StringBuilder class and its methods |
| Topic 10: Annotations | 5% | - Apply standard annotations to classes and methods - Create custom annotations - Describe the purpose of annotations |
| Topic 11: Working with Java OOP | 15% | - Create inner classes and use them within other classes - Implement encapsulation - Apply the final keyword to classes, methods, and fields - Implement inheritance - Use abstract classes and interfaces - Apply the static keyword to methods and fields - Implement polymorphism |
| Topic 12: Controlling Program Flow | 10% | - Use if and if/else statements - Use switch statements - Use break and continue statements - Use for, while, and do/while loops - Use Java control statements |
