Java Stream kann nicht wiederverwendet werden.

import java.util.stream.*;

public class StreamTest {

	public static void main(String[] args) {

		// a-Streaming z
		Stream<String> stream = Stream.iterate('a', c -> ++c).map(Object::toString).limit('z' - 'a' + 1);

		//Erste Verwendung von Stream
		try {
			String collect_01 = stream.filter(str -> {
				byte[] b = str.getBytes();
				return (b[0] % 2 == 0);
			}).collect(Collectors.joining(";"));
			System.out.println(collect_01);
		} catch (Exception e) {
			System.err.println(e.getMessage());
		}

		//Wiederverwendung von Streams--Scheitern
		try {
			String collect_02 = stream.map(str -> "[" + str + "]").collect(Collectors.joining(";"));
			System.out.println(collect_02);
		} catch (Exception e) {
			System.err.println(e.getMessage());
		}

	}

}

b;d;f;h;j;l;n;p;r;t;v;x;z
stream has already been operated upon or closed

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