Java / Java8 streams
Explain: IllegalStateException, stream has already been operated upon or closed.
A Stream should be operated o only once. A Stream implementation may throw IllegalStateException if it detects that the Stream is being reused.
Whenever a terminal operation is called on a Stream object, the instance gets consumed and closed. Therefore, it is allowed to perform a single operation that consumes a Stream, otherwise, an exception is encountered that states that the Stream has already been operated upon or closed.
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