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The 1Z0-819 certification exam covers a wide range of topics including Java fundamentals, object-oriented programming concepts, data types, operators, control structures, and exception handling. It also covers advanced topics such as concurrency, streams, and lambda expressions. 1Z0-819 exam consists of 60 multiple-choice questions and has a duration of 180 minutes. To pass the exam, a candidate must score at least 63% of the total marks.
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Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913
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| Section | Weight | Objectives |
|---|---|---|
| Java Platform Module System | 10% | - Use jdeps to determine dependencies - Explain the default modules and class path - Migrate applications to use modules - Deploy and execute modules - Declare module dependencies - Explain the concept of module exports and requires |
| Working with Arrays and Collections | 8% | - Search for elements in a collection - Filter a collection using lambda expressions - Use generic types and diamond operator - Sort elements in a collection - Iterate through a collection - Create a list, set, map, or queue collection |
| Working with Streams and Lambda expressions | 13% | - Use method references with streams - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods - Use the Stream API to perform terminal operations - Filter a collection using lambda expressions - Describe the Stream interface and pipeline - Use functional interfaces with lambda expressions |
| Working with Java data types | 12% | - Create and manipulate strings - Differentiate between object reference variables and primitive variables - Declare and initialize variables - Explain an object's lifecycle (creation, dereferencing via garbage collection) - Read or write to object fields - Call methods on objects - Manipulate data using the StringBuilder class and its methods |
| Controlling Program Flow | 10% | - Use switch statements - Use break and continue statements - Use for, while, and do/while loops - Use Java control statements - Use if and if/else statements |
| Secure Coding in Java SE Application | 5% | - Validate user input - Prevent Denial of Service (DoS) attacks - Prevent SQL injection and other attacks - Secure sensitive data |
| Database Applications with JDBC | 5% | - Describe the advantages of using a connection pool - Connect to a database using JDBC - Execute queries and process results - Use parameterized queries |
| Exception Handling and Localization | 10% | - Describe the advantages of exception handling - Use assertions - Use resource bundles and locale classes for internationalization - Create and throw custom exceptions - Create try-catch blocks and understand exception propagation - Use standard exception classes |
| I/O (Fundamentals and NIO2) | 7% | - Use NIO2 API to work with file systems and file attributes - Use Stream API with files - Use Path interface to manipulate file paths - Read and write console and file input/output using Java I/O system |
| Annotations | 5% | - Create custom annotations - Describe the purpose of annotations - Apply standard annotations to classes and methods |
| Concurrency | 10% | - Use synchronized blocks and the volatile keyword - Create worker threads using Runnable and Thread objects - Use parallel streams to improve performance - Use ExecutorService to concurrently execute tasks - Identify potential threading problems - Use java.util.concurrent atomic classes and ForkJoinPool |
| Working with Java OOP | 15% | - Apply the final keyword to classes, methods, and fields - Implement encapsulation - Implement inheritance - Implement polymorphism - Create inner classes and use them within other classes - Use abstract classes and interfaces - Apply the static keyword to methods and fields |
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