What does array mean in java

Arrays in Java

What are Arrays?

Arrays is a class in the Java standard library that implements the array function.

Using Arrays

In Java, an array is a sequence of elements with a fixed length. The Arrays class provides a variety of static methods for operating arrays, including:

Create an array

<code class="java">int[] numbers = new int[10];</code>

Get the array length

<code class="java">int length = numbers.length;</code>

Accessing array elements

<code class="java">System.out.println(numbers[0]);</code>

Traversing the array

<code class="java">for (int number : numbers) {
    System.out.println(number);
}</code>

Sort the array

<code class="java">Arrays.sort(numbers);</code>

Binary search array

<code class="java">int index = Arrays.binarySearch(numbers, 5);</code>

Filled array

<code class="java">Arrays.fill(numbers, 0);</code>

Multidimensional array

Java also Supports multidimensional arrays where the elements are the arrays themselves. For example, a two-dimensional array is an array of elements consisting of rows and columns.

Note

• The array length is determined when it is created and cannot be changed.
• Array elements are initialized by default to the default value (0 for numeric types).
• Be careful when indexing an array, an index out of range will cause an array out-of-bounds exception.

The above is the detailed content of What does array mean in java. For more information, please follow other related articles on the PHP Chinese website!