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garbage collection
1 , 7
Create classes and records, and define and use instance and static fields and methods, constructors, and instance and static initializers
5 , 6 , 7
Implement overloading, including var-arg methods
5
Understand variable scopes, use local variable type inference, apply encapsulation, and make objects immutable
1 , 6 , 7 , 8
Implement polymorphism and differentiate object type versus reference type. Perform type casting, identify object types using instanceof operator and pattern matching
3 , 6 , 7
Create and use interfaces, identify functional interfaces, and utilize private, static, and default interface methods
7 , 8
Create and use enumerations with fields, methods and constructors
7
Handling Exceptions
Handle exceptions using try/catch/finally, try-with-resources, and multi-catch blocks, including custom exceptions
11
Working with Arrays and Collections
Create Java arrays, List, Set, Map, and Deque collections, and add, remove, update, retrieve and sort their elements
4 , 9
Working with Streams and Lambda expressions
Use Java object and primitive Streams, including lambda expressions implementing functional interfaces, to supply, filter, map, consume, and sort data
10
Perform decomposition, concatenation and reduction, and grouping and partitioning on sequential and parallel streams
10 , 13
Packaging and deploying Java code and use the Java Platform Module System
Define modules and their dependencies, expose module content including for reflection. Define services, producers, and consumers
12
Compile Java code, produce modular and non-modular jars, runtime images, and implement migration using unnamed and automatic modules
12
Managing concurrent code execution
Create worker threads using Runnable and Callable, manage the thread lifecycle, including automations provided by different Executor services and concurrent API
13
Develop thread-safe code, using different locking mechanisms and concurrent API
13
Process Java collections concurrently including the use of parallel streams
13
Using Java I/O API
Read and write console and file data using I/O Streams
14
Serialize and de-serialize Java objects
14
Create, traverse, read, and write Path objects and their properties using java.nio.file API
14
Accessing databases using JDBC
Create connections, create and execute basic, prepared and callable statements, process query results and control transactions using JDBC API
15
Implementing Localization
Implement localization using locales, resource bundles, parse and format messages, dates, times, and numbers including currency and percentage values
11
Java Foundations (1Z0-811)
The following table provides a breakdown of this book's exam coverage for the Java Foundations (1Z0-811) exam, showing you the chapter where each objective or subobjective is covered.
A few topics
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