java-8 Archives - Page 9 of 11

Java 8 Lambda function that throws exception?

I know how to create a reference to a method that has a String parameter and returns an int, it’s: Function<String, Integer> However, ...

April 30, 2022
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Java 8 Distinct by property

In Java 8 how can I filter a collection using the Stream API by checking the distinctness of a property of each object? ...

April 30, 2022
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When to use: Java 8+ interface default method, vs. abstract method

Java 8 allows for default implementation of methods in interfaces called Default Methods. I am confused between when would I use that sort ...

April 29, 2022
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Should I always use a parallel stream when possible?

With Java 8 and lambdas it’s easy to iterate over collections as streams, and just as easy to use a parallel stream. Two ...

April 29, 2022
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Find first element by predicate

I’ve just started playing with Java 8 lambdas and I’m trying to implement some of the things that I’m used to in functional ...

April 29, 2022
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Is it possible to use Java 8 for Android development?

Searching the web, it is not clear if Java 8 is supported for Android development or not. Before I download/setup Java 8, can ...

April 29, 2022
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How can I turn a List of Lists into a List in Java 8?

If I have a List<List<Object>>, how can I turn that into a List<Object> that contains all the objects in the same iteration order ...

April 25, 2022
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Why does array[idx++]+=”a” increase idx once in Java 8 but twice in Java 9 and 10?

For a challenge, a fellow code golfer wrote the following code: import java.util.*; public class Main { public static void main(String args) { ...

April 22, 2022
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What’s the difference between map() and flatMap() methods in Java 8?

In Java 8, what’s the difference between Stream.map() and Stream.flatMap() methods? 20 s 20 Stream.flatMap, as it can be guessed by its name, ...

April 18, 2022
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Error:java: javacTask: source release 8 requires target release 1.8

Using IntelliJ IDE can’t compile any projects. Screenshots of settings below: Used JDK: Project SDK and Language level: Language Level: Anybody have any ...

April 17, 2022
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