Exam Name: Java SE 11 Developer (1Z0-819日本語版)
Certification Provider: Oracle
Corresponding Certification: Oracle Java SE
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What is Java SE 11 Developer Exam Number: 1Z0-819 Certification Exam and Retake policy
Oracle Cloud Certification credentials are only valid for a period of 18 months from the date you earn the credential. The certification will become inactive at the end of 18 months. However, for Oracle candidates, it is necessary to hold an active certification in order to have access to various certification benefits including, using Oracle certification logos, certificates, scoring reports, digital badges, and certification verification.
To stay current, candidates have to re-certify themselves with the latest version of the exam. Oracle Cloud Certifications include various titles with levels that are Oracle Certified Associate, Specialist, and Professional. Moreover, the Oracle Cloud Certifications are updated continuously throughout the year for keeping current with major product and service releases and re-released on an annual basis with a new title.
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Difficulty in Attempting Java SE 11 Developer Exam Number: 1Z0-819
If you have at least some programming experience, we recommend using the ORACLE 1Z0-006 practice exam and ORACLE 1Z0-006 practice exams exam dumps and practice exams written for exam 1z0-816 and it covers most of what will be on the exam. Lead2PassExam.con also has practice exams to prepare for the exam. Also, you can find mock exams to check the knowledge learned after reading the book.
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Questions in the certification examination are based on the real-world scenarios and cater to the real-time problems implementation difficulties, hence along with all the training material and tutorial it is of utmost importance for the candidate to possess practical knowledge and experience of working in the field of Java technology.
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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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:
- Define and use fields and methods, including instance, static and overloaded methods
- Secure resource access including filesystems, manage policies and execute privileged code
- Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
- Create and use enumerations
- Create and use subclasses and superclasses, including abstract classes
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
- Declare and instantiate Java objects including nested class objects, and explain objects' - lifecycles (including creation, dereferencing by reassignment, and garbage collection)
- Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
- Initialize objects and their members using instance and static initialiser statements and constructors
- Understand variable scopes, apply encapsulation and make objects immutable
Oracle 1Z0-819日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Working with Arrays and Collections | 8% | - Create a list, set, map, or queue collection - Use generic types and diamond operator - Filter a collection using lambda expressions - Search for elements in a collection - Sort elements in a collection - Iterate through a collection |
| I/O (Fundamentals and NIO2) | 7% | - Use Path interface to manipulate file paths - Use Stream API with files - Use NIO2 API to work with file systems and file attributes - Read and write console and file input/output using Java I/O system |
| Exception Handling and Localization | 10% | - Create and throw custom exceptions - Describe the advantages of exception handling - Use assertions - Use standard exception classes - Create try-catch blocks and understand exception propagation - Use resource bundles and locale classes for internationalization |
| Concurrency | 10% | - Use ExecutorService to concurrently execute tasks - Create worker threads using Runnable and Thread objects - Identify potential threading problems - Use java.util.concurrent atomic classes and ForkJoinPool - Use parallel streams to improve performance - Use synchronized blocks and the volatile keyword |
| Annotations | 5% | - Create custom annotations - Describe the purpose of annotations - Apply standard annotations to classes and methods |
| Secure Coding in Java SE Application | 5% | - Secure sensitive data - Prevent Denial of Service (DoS) attacks - Validate user input - Prevent SQL injection and other attacks |
| Controlling Program Flow | 10% | - Use Java control statements - Use if and if/else statements - Use for, while, and do/while loops - Use break and continue statements - Use switch statements |
| Working with Streams and Lambda expressions | 13% | - Use functional interfaces with lambda expressions - Use the Stream API to perform terminal operations - Filter a collection using lambda expressions - Use method references with streams - Describe the Stream interface and pipeline - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods |
| Database Applications with JDBC | 5% | - Execute queries and process results - Connect to a database using JDBC - Use parameterized queries - Describe the advantages of using a connection pool |
| Working with Java data types | 12% | - Call methods on objects - Differentiate between object reference variables and primitive variables - Declare and initialize variables - Manipulate data using the StringBuilder class and its methods - Create and manipulate strings - Explain an object's lifecycle (creation, dereferencing via garbage collection) - Read or write to object fields |
| Working with Java OOP | 15% | - Implement polymorphism - Use abstract classes and interfaces - Apply the final keyword to classes, methods, and fields - Implement encapsulation - Apply the static keyword to methods and fields - Create inner classes and use them within other classes - Implement inheritance |
| Java Platform Module System | 10% | - Explain the concept of module exports and requires - Declare module dependencies - Migrate applications to use modules - Explain the default modules and class path - Use jdeps to determine dependencies - Deploy and execute modules |
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