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Java 8 CompletableFuture thenRun Example

Hello. In this tutorial, we will explore the Java 8 CompletableFuture thenRun method. 1. Introduction Before diving deep into the practice stuff let us understand the thenRun(…) method we will be covering in this tutorial. CompletableFuture.thenRun() method does not depend on the previous execution CompletableFuture.thenRun() method does not return anything i.e. CompletableFuture<Void> 2. Practice Let us dive into some practice ...

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Java 8 CompletableFuture thenAccept Example

Hello. In this tutorial, we will explore the Java 8 CompletableFuture thenAccept method. 1. Introduction Before diving deep into the practice stuff let us understand the thenAccept(…) method we will be covering in this tutorial. CompletableFuture.thenAccept() takes a Consumer and returns CompletableFuture 2. Practice Let us dive into some practice stuff from here and I am assuming that you already ...

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Java 8 CompletableFuture thenApply Example

Hello. In this tutorial, we will explore the Java 8 CompletableFuture thenApply method. 1. Introduction Before diving deep into the practice stuff let us understand the thenApply(…) method we will be covering in this tutorial. CompletableFuture.thenApply(…) method is inherited from the CompletionStageThe method returns a new CompletionStage (is a Promise object) that when the stage is completed normally, is executed ...

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Java 8 CompletableFuture supplyAsync Example

Hello. In this tutorial, we will explore the Java 8 CompletableFuture and explain the supplyAsync method. 1. Introduction Before diving deep into the practice stuff let us understand the supplyAsync(…) method we will be covering in this tutorial. Run a Supplier functional interface asynchronously. A Supplier functional interface does not accept anything but returns a valueThe completableFuture.get() blocks until the ...

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Java 8 CompletableFuture runAsync Example

Hello. In this tutorial, we will explore the Java 8 CompletableFuture and explain the runAsync method. 1. Introduction Before diving deep into the practice stuff let us understand the runAsync(…) method we will be covering in this tutorial. Used to run a method asynchronously. The method accepts a Runnable functional interface The method does not return any value Supports the ...

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Java 8 Stream API – limit() & skip() Example

Hello. In this tutorial, we will explore the Stream API: limit() and skip() methods introduced in Java 8. 1. Introduction Before diving deep into the practice stuff let us understand the methods we will be covering in this tutorial. The skip() method discards the first n elements of a stream. n cannot be a negative number and if it is ...

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Java 8 Stream API – distinct(), count() & sorted() Example

Hello. In this tutorial, we will explore the Stream API methods: sorted(), count(), and distinct() methods introduced in Java 8. 1. Introduction Before diving deep into the practice stuff let us understand the methods we will be covering in this tutorial. The distinct() method returns a stream of unique elements. It is a stateful intermediate operation and returns a new ...

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Java 8 Functional Interface – BiPredicate Example

Hello. In this tutorial, we will explain the BiPredicate functional interface in Java 8. 1. Introduction Java 8 BiPredicate functional interface represents a method that accepts two input arguments and returns a boolean output. Represented by the method syntax – boolean test(T t, U u). This interface also provides some default methods like – default BiPredicate or(BiPredicate other) – Composed ...

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Summing Numbers with Java 8 Stream.reduce() operation

Hello. In this tutorial, we will explain the Stream.reduce method in java 8. 1. Introduction Before diving deep into the practice stuff let us understand the reduce() method in java8 programming. Stream.reduce() – Combine the elements of a stream and produces a single result. The method accepts T identity and BinaryOperator<T> accumulator as the arguments. If the identity argument is ...

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Java 8 Stream – findAny() & findFirst() Example

Hello. In this tutorial, we will explain the findAny() and findFirst() methods in java 8. 1. Introduction Before diving deep into the practice stuff let us understand the findAny() and findFirst() methods in java8 programming. Stream.findFirst() – Returns an optional object containing first element of the given stream. It can also return an empty() optional if the stream is emptyStream.findAny() ...

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