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# streams

Java Streams are a powerful and flexible abstraction for processing sequences of data

## Stream source

> Collections, Arrays, or I/O channels, etc.

## Intermediate Operations

> To manipulate the data in stream but not return anything

Examples :

* filter()
* map()
* sort()

## Terminal Operations

> Stop stream processing and return values from the stream

Examples :

* forEach()
* toArray()
* reduce()
* min() / max()

## Example

```java
List<String> fruits = Arrays.asList("apple", "banana", "cherry", "date", "elderberry");

List<String> filteredAndMappedFruits = fruits.stream()
        .filter(fruit -> fruit.length() > 5) // Intermediate Operation
        .map(fruit -> fruit.toUpperCase()) // Intermediate Operation
        .toList(); // Terminal Operation

System.out.println(filteredAndMappedFruits); // [BANANA, CHERRY, ELDERBERRY]
```