Java 8 features - class 28 Stream APIs - Hotel Management Application using all methods in Streams
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filter() method:-
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The filter() method in Java 8 is a key feature of the Stream API that allows you to process collections by selecting elements that match a specified condition. It takes a Predicate as an argument and returns a new stream consisting of the elements that satisfy the given predicate.
map() method:-
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The map() method in Java 8 is part of the Stream API and is used to transform elements in a stream. It takes a Function as an argument, which is applied to each element in the stream, returning a new stream of transformed elements.
limit() method:-
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The limit() method in Java 8 is part of the Stream API and is used to restrict the number of elements in a stream. It returns a new stream that contains only the first n elements from the original stream, where n is the specified limit.
skip() method:-
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The skip() method in Java 8 is part of the Stream API and is used to skip a specified number of elements in a stream. It returns a new stream that omits the first n elements, where n is the number specified.
distinct() method:-
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The distinct() method in Java 8 is part of the Stream API and is used to remove duplicate elements from a stream. It returns a new stream containing only unique elements, based on their natural equality or a specified criterion.
anyMatch() method:-
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The anyMatch() method in Java 8 is part of the Stream API and is used to check if any elements in a stream satisfy a given predicate. It returns a boolean value: true if at least one element matches the predicate, and false otherwise.
allMatch() method:-
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The allMatch() method in Java 8 is part of the Stream API and is used to check if all elements in a stream satisfy a given predicate. It returns a boolean value: true if all elements match the predicate, and false otherwise.
noneMatch() method:-
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The noneMatch() method in Java 8 is part of the Stream API and is used to check if no elements in a stream satisfy a given predicate. It returns a boolean value: true if all elements match the negation of the predicate, and false if at least one element matches the predicate.
findFirst() method:-
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The findFirst() method in Java 8 is part of the Stream API and is used to retrieve the first element of a stream. It returns an Optional describing the first element of the stream if it is present, or an empty Optional if the stream is empty.
findAny() method:-
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The findAny() method in Java 8 is part of the Stream API and is used to retrieve any element from a stream. It returns an Optional describing an element of the stream if one is present, or an empty Optional if the stream is empty. This method is particularly useful in parallel processing.