JavaIntermediate#java8#streams

Explain Java 8 Streams.

Streams provide a functional-style pipeline of operations (filter, map, reduce, collect) on collections. Intermediate ops are lazy, terminal ops trigger execution. They support parallel streams for multi-core processing.

Example
List<String> names = List.of("Amit","Bob","Ankit");
List<String> result = names.stream()
  .filter(n -> n.startsWith("A"))
  .map(String::toUpperCase)
  .collect(Collectors.toList());
// [AMIT, ANKIT]

Related Questions

1
JavaIntermediate#java8#lambda

What are lambda expressions?

Open
2
JavaIntermediate#java8

What is a functional interface?

Open
3
JavaIntermediate#java8

What is Optional?

Open