Oracle Java SE 11 Developer (1Z0-819日本語版) : 1Z0-819日本語
- Exam Code: 1Z0-819日本語
- Exam Name: Java SE 11 Developer (1Z0-819日本語版)
- Updated: Sep 15, 2026 Q & A: 297 Questions and Answers
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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:
- Create and use subclasses and superclasses, including abstract classes
- Initialize objects and their members using instance and static initialiser statements and constructors
- Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
- Understand variable scopes, apply encapsulation and make objects immutable
- Secure resource access including filesystems, manage policies and execute privileged code
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
- Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
- 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
- Define and use fields and methods, including instance, static and overloaded methods
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Oracle 1Z0-819日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Working with Arrays and Collections | 8% | - Sort elements in a collection - Filter a collection using lambda expressions - Use generic types and diamond operator - Iterate through a collection - Create a list, set, map, or queue collection - Search for elements in a collection |
| Topic 2: Exception Handling and Localization | 10% | - Create try-catch blocks and understand exception propagation - Use resource bundles and locale classes for internationalization - Use assertions - Describe the advantages of exception handling - Use standard exception classes - Create and throw custom exceptions |
| Topic 3: Secure Coding in Java SE Application | 5% | - Secure sensitive data - Prevent SQL injection and other attacks - Validate user input - Prevent Denial of Service (DoS) attacks |
| Topic 4: Working with Java data types | 12% | - Manipulate data using the StringBuilder class and its methods - Create and manipulate strings - Declare and initialize variables - Read or write to object fields - Differentiate between object reference variables and primitive variables - Call methods on objects - Explain an object's lifecycle (creation, dereferencing via garbage collection) |
| Topic 5: Database Applications with JDBC | 5% | - Execute queries and process results - Describe the advantages of using a connection pool - Use parameterized queries - Connect to a database using JDBC |
| Topic 6: Working with Java OOP | 15% | - Implement inheritance - Use abstract classes and interfaces - Apply the final keyword to classes, methods, and fields - Apply the static keyword to methods and fields - Create inner classes and use them within other classes - Implement encapsulation - Implement polymorphism |
| Topic 7: Concurrency | 10% | - Identify potential threading problems - Use synchronized blocks and the volatile keyword - Create worker threads using Runnable and Thread objects - Use ExecutorService to concurrently execute tasks - Use java.util.concurrent atomic classes and ForkJoinPool - Use parallel streams to improve performance |
| Topic 8: Working with Streams and Lambda expressions | 13% | - Describe the Stream interface and pipeline - Filter a collection using lambda expressions - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods - Use functional interfaces with lambda expressions - Use method references with streams - Use the Stream API to perform terminal operations |
| Topic 9: Controlling Program Flow | 10% | - Use for, while, and do/while loops - Use if and if/else statements - Use Java control statements - Use break and continue statements - Use switch statements |
| Topic 10: Java Platform Module System | 10% | - Deploy and execute modules - Declare module dependencies - Explain the concept of module exports and requires - Explain the default modules and class path - Migrate applications to use modules - Use jdeps to determine dependencies |
| Topic 11: I/O (Fundamentals and NIO2) | 7% | - Use Stream API with files - 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 |
| Topic 12: Annotations | 5% | - Create custom annotations - Describe the purpose of annotations - Apply standard annotations to classes and methods |
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