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Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913

For more info read reference:

1Z0-006 Official Certification Site Oracle Cloud Learning Resources

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• Use Java Streams to filter, transform and process data
• Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API
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• 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
• Sort collections and arrays using Comparator and Comparable interfaces
• Use generics, including wildcards
• Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams

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