Java 8 features - class 32 - Collectors class part 2 - joining() method and reducing() methods

Veröffentlicht am: 08 Oktober 2024
auf dem Kanal: Learn Java

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joining() and reducing() method in java 8:-
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In Java 8, the Collectors class provides various methods to collect data from streams into different types of collections or to perform aggregation operations. Two important methods within this class are joining() and reducing().

1. Joining Method:-
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The joining() method is used to concatenate the elements of a stream into a single String. It can also take optional parameters to specify a delimiter, a prefix, and a suffix.

2. Reducing Method:-
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The reducing() method is used for performing a reduction on the elements of a stream, using an associative accumulation function and returning an Optional. This is useful for operations like summing numbers, finding the maximum, or any other kind of aggregation.

Summary:-
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joining(): Concatenates strings from a stream, with options for delimiters and surrounding text.
reducing(): Performs a reduction operation on stream elements, useful for various aggregations.
Both methods provide powerful ways to process and transform data within streams in Java 8.

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