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via ideone.com by Unknown author, 1 year ago
stream has already been operated upon or closed
via Stack Overflow by Waseem Saeed
, 3 months ago
stream has already been operated upon or closed
java.lang.IllegalStateException: stream has already been operated upon or closed	at java.util.stream.AbstractPipeline.sourceStageSpliterator(AbstractPipeline.java:279)	at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580)	at codermag.net.java8.StreamTestingClass.main(StreamTestingClass.java:15)