Explain stream pipeline and its components.

A steam pipeline is a sequence of aggregate operations. Examples of aggregate operations include filter and forEach.

A pipeline has the following components:

• A source represented by collection, an array, a generator function, or an I/O channel.
• 0 or more intermediate operations such as filter that produces a new stream.
• A terminal operation, such as forEach, produces a non-stream result, such as a primitive value (boolean or double), a collection, or in the case of forEach, no value at all.

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