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public class StreamPeekEx {
 
    public static void main(String a[]) {
 
        Stream.of("bus", "car", "bycle", "flight", "train")
                .filter(e -> e.length() > 3)
                .peek(e -> System.out.println("Filtered value: " + e))
                .map(String::toUpperCase)
                .peek(e -> System.out.println("Mapped value: " + e))
                .collect(Collectors.toList());
    }
}