Suchergebnisse
Suchergebnisse:
Learn how to use Arrays.copyOfRange, Arrays.asList, System.arraycopy and other methods to extract a subarray from a given array in Java. See examples, explanations and answers from experts and users.
- Overview
- Introduction to The Problem
- Using The Stream API
- Using The Arrays.copyOfRange() Method
- Using The System.arraycopy() Method
- Using ArrayUtils from The Apache Commons Lang3 Library
- Conclusion
- GeneratedCaptionsTabForHeroSec
We know that Java’s List has the subList() method, which allows us to slice the source List object. However, there’s no standard subArray()method on the array side. In this tutorial, let’s explore how to get a subarray of a given array in Java.
As usual, let’s understand the problem through an example. Let’s say we have a string array: As we can see, the LANGUAGES array holds some programming language names. Also, since applications are written in “Java”, “Kotlin”, or “Scala” can run on the Java Virtual Machine, let’s say we’d like a subarray containing these three elements. In other word...
A significant new feature Java 8 brought us is the Stream API. So if the Java version we’re working with is 8 or later, we can slice a given array using the Stream API. First, we can convert an array to a Stream object using the Arrays.stream() method. We should note that we should use the Arrays.stream()method with three arguments: 1. thearray – i...
We’ve learned to use the Stream API to solve the problem. However, the Stream API is only available in Java 8 and later. If our Java version is 6 or later, we can solve the problem using the Arrays.copyOfRange() method. This method’s arguments are similar to the Arrays.stream()method – the array, the from-index (inclusive), and the to-index (exclus...
The Arrays.copyOfRange()approach solves the problem by copying a part of the given array to a new array. When we want to copy a part from an array, apart from the Arrays.copyOfRange() method, we can also use the System.arraycopy()method. So next, let’s solve the problem using this method. We’ve seen the Arrays.copyOfRange() returns the result subar...
Apache Commons Lang3 is a pretty widely used library. Its ArrayUtilsprovides a lot of handy methods so that we can work with arrays easier. Finally, let’s solve the problem using the ArrayUtilsclass. Before we start using ArrayUtils,let’s add the dependency to our Maven configuration: Of course, we can always find the latest versionin the Maven cen...
In this article, we’ve learned different approaches to getting a subarray from a given array. As usual, all code snippets presented here are available over on GitHub.
Learn how to get a subarray of a given array in Java using different methods, such as Stream API, Arrays.copyOfRange(), System.arraycopy(), and Apache Commons Lang3. See examples, tests, and explanations for each method.
- Kai Yuan
Learn how to get a subarray of an array in Java using three methods: copying elements, copyOfRange() method, and Java 8 stream. See examples, syntax, and output for each method.
15. Feb. 2024 · Array-Slicing in Java. Aufteilen eines Arrays durch Duplizieren von Elementen in Java. Slicen Sie ein Array mit der Methode copyOfRange() in Java. Aufteilen eines Arrays mithilfe des Java 8-Streams. Dieser Artikel hilft Ihnen, ein Array in Java in ein Subarray zu zerlegen.
- Shiv Kumar Yadav
1. März 2023 · Learn how to get a slice of a primitive array in Java using different methods, such as System.arraycopy(), List.subList(), Streams API, and more. See examples, syntax, and output for each method.
12. Feb. 2024 · System.out.println("Slice of Array: " + Arrays.toString(slicedArr)); } } In the slice method, the Arrays.copyOfRange() method is employed to create a subarray. This method takes three parameters: the original array ( arr ), the start index ( stIndx ), and the end index ( enIndx ).
Java – Slice an Array. To slice an array from specific starting index to specific ending index, call Arrays.copyOfRange () method and pass the array, starting index, and ending index as arguments. Examples. In the following example, we take an integer array of length 10 and slice it from index=3 to index=8. Main.java. import java.util.Arrays;
