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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
- Create and use enumerations
- Define and use fields and methods, including instance, static and overloaded methods
- Secure resource access including filesystems, manage policies and execute privileged code
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
- 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
- Declare and instantiate Java objects including nested class objects, and explain objects' - lifecycles (including creation, dereferencing by reassignment, and garbage collection)
- Create and use subclasses and superclasses, including abstract classes
- Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913
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How much Java SE 11 Developer Exam Number: 1Z0-819 costs
- Passing Score: 60% or higher
- No. of Questions: 60 Questions
- Types of questions: Performance Based Questions
- Examination Name: Java SE 11 Developer Exam Number: 1Z0-819
- Length of Exam: 85 min
- Examination Fees: $250 USD
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 pdf:
- Use a Java array and List, Set, Map and Deque collections, including convenience methods
- Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
- Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams
- Use generics, including wildcards
- Develop thread-safe code, using different locking mechanisms and java.util.concurrent API
- Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API
- Use Java Streams to filter, transform and process data
- Sort collections and arrays using Comparator and Comparable interfaces
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Oracle 1Z0-819日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Controlling Program Flow | 10% | - Use switch statements - Use break and continue statements - Use if and if/else statements - Use Java control statements - Use for, while, and do/while loops |
| Topic 2: Exception Handling and Localization | 10% | - Use resource bundles and locale classes for internationalization - Describe the advantages of exception handling - Create try-catch blocks and understand exception propagation - Use standard exception classes - Use assertions - Create and throw custom exceptions |
| Topic 3: Database Applications with JDBC | 5% | - Use parameterized queries - Connect to a database using JDBC - Execute queries and process results - Describe the advantages of using a connection pool |
| Topic 4: Working with Java data types | 12% | - Call methods on objects - Create and manipulate strings - Declare and initialize variables - Manipulate data using the StringBuilder class and its methods - Explain an object's lifecycle (creation, dereferencing via garbage collection) - Differentiate between object reference variables and primitive variables - Read or write to object fields |
| Topic 5: Working with Streams and Lambda expressions | 13% | - Use functional interfaces with lambda expressions - Describe the Stream interface and pipeline - Use method references with streams - Filter a collection using lambda expressions - Use the Stream API to perform terminal operations - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods |
| Topic 6: Java Platform Module System | 10% | - Deploy and execute modules - Declare module dependencies - Use jdeps to determine dependencies - Explain the default modules and class path - Explain the concept of module exports and requires - Migrate applications to use modules |
| Topic 7: Working with Arrays and Collections | 8% | - Use generic types and diamond operator - Sort elements in a collection - Iterate through a collection - Create a list, set, map, or queue collection - Search for elements in a collection - Filter a collection using lambda expressions |
| Topic 8: Secure Coding in Java SE Application | 5% | - Secure sensitive data - Validate user input - Prevent Denial of Service (DoS) attacks - Prevent SQL injection and other attacks |
| Topic 9: Annotations | 5% | - Apply standard annotations to classes and methods - Describe the purpose of annotations - Create custom annotations |
| Topic 10: Working with Java OOP | 15% | - Implement polymorphism - Implement inheritance - Create inner classes and use them within other classes - Apply the final keyword to classes, methods, and fields - Apply the static keyword to methods and fields - Implement encapsulation - Use abstract classes and interfaces |
| Topic 11: Concurrency | 10% | - Use ExecutorService to concurrently execute tasks - Use synchronized blocks and the volatile keyword - Identify potential threading problems - Create worker threads using Runnable and Thread objects - Use java.util.concurrent atomic classes and ForkJoinPool - Use parallel streams to improve performance |
| Topic 12: I/O (Fundamentals and NIO2) | 7% | - Use Stream API with files - Use NIO2 API to work with file systems and file attributes - Use Path interface to manipulate file paths - Read and write console and file input/output using Java I/O system |
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