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How much Java SE 11 Developer Exam Number: 1Z0-819 costs
- Types of questions: Performance Based Questions
- Length of Exam: 85 min
- No. of Questions: 60 Questions
- Examination Name: Java SE 11 Developer Exam Number: 1Z0-819
- Examination Fees: $250 USD
- Passing Score: 60% or higher
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:
- Understand variable scopes, apply encapsulation and make objects immutable
- Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
- 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 and use interfaces, identify functional interfaces, and utilize private, static, and default methods
- Secure resource access including filesystems, manage policies and execute privileged code
- Create and use subclasses and superclasses, including abstract classes
- Define and use fields and methods, including instance, static and overloaded methods
- Initialize objects and their members using instance and static initialiser statements and constructors
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
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Oracle 1Z0-819日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| I/O (Fundamentals and NIO2) | 7% | - Use NIO2 API to work with file systems and file attributes - Use Path interface to manipulate file paths - Use Stream API with files - Read and write console and file input/output using Java I/O system |
| Working with Streams and Lambda expressions | 13% | - Use method references with streams - Use the Stream API to perform terminal operations - Filter a collection using lambda expressions - Use functional interfaces with lambda expressions - Describe the Stream interface and pipeline - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods |
| Working with Java data types | 12% | - Read or write to object fields - Declare and initialize variables - Call methods on objects - Differentiate between object reference variables and primitive variables - Create and manipulate strings - Explain an object's lifecycle (creation, dereferencing via garbage collection) - Manipulate data using the StringBuilder class and its methods |
| Exception Handling and Localization | 10% | - Describe the advantages of exception handling - Create and throw custom exceptions - Use assertions - Create try-catch blocks and understand exception propagation - Use standard exception classes - Use resource bundles and locale classes for internationalization |
| Working with Arrays and Collections | 8% | - Search for elements in a collection - Iterate through a collection - Filter a collection using lambda expressions - Use generic types and diamond operator - Sort elements in a collection - Create a list, set, map, or queue collection |
| 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 |
| Annotations | 5% | - Create custom annotations - Describe the purpose of annotations - Apply standard annotations to classes and methods |
| Java Platform Module System | 10% | - Explain the concept of module exports and requires - Use jdeps to determine dependencies - Deploy and execute modules - Declare module dependencies - Explain the default modules and class path - Migrate applications to use modules |
| Concurrency | 10% | - Use synchronized blocks and the volatile keyword - Use parallel streams to improve performance - Identify potential threading problems - Use ExecutorService to concurrently execute tasks - Use java.util.concurrent atomic classes and ForkJoinPool - Create worker threads using Runnable and Thread objects |
| Controlling Program Flow | 10% | - Use break and continue statements - Use switch statements - Use for, while, and do/while loops - Use Java control statements - Use if and if/else statements |
| 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 OOP | 15% | - Implement polymorphism - Apply the static keyword to methods and fields - Implement encapsulation - Create inner classes and use them within other classes - Use abstract classes and interfaces - Apply the final keyword to classes, methods, and fields - Implement inheritance |
