Jul 23, 2017 · String[][] arrays = { array1, array2, array3, array4, array5 }; or. String[][] arrays = new String[][] { array1, array2, array3, array4, array5 }; (The latter syntax can be used in assignments other than at the point of the variable declaration, whereas the shorter syntax only works with declarations.)

Apr 14, 2025 · In this article, we will discuss different ways to declare and initialize an array in Java. Understanding how to declare an array in Java is very important. In Java, an array is declared by specifying its data type, and an identifier, and adding brackets [] …

Jul 29, 2009 · For creating arrays of class Objects you can use the java.util.ArrayList. to define an array: public ArrayList<ClassName> arrayName; arrayName = new ArrayList<ClassName>(); Assign values to the array:

To initialize an array of arrays, you can use new keyword with the size specified for the number of arrays inside the outer array. Copy datatype[][] arrayName = new datatype[size][];

Dec 16, 2024 · In this article, we explored different ways of initializing arrays in Java. Also, we learned how to declare and allocate memory to arrays of any type, including one-dimensional and multi-dimensional arrays.

Using Java 8, you can simply use ncopies of Collections class: Object[] arrays = Collections.nCopies(size, object).stream().toArray(); In your case it will be: Integer[] arrays = Collections.nCopies(10, Integer.valueOf(1)).stream().toArray(Integer[]::new); . Here is a detailed answer of a similar case of yours.

Mar 28, 2025 · To declare an array in Java, use the following syntax: type [] arrayName; type: The data type of the array elements (e.g., int, String). arrayName: The name of the array. Note: The array is not yet initialized. 2. Create an Array. To create an array, you need to allocate memory for it using the new keyword:

Feb 12, 2024 · Create an Array of Arrays in Java by Direct Initialization. Direct initialization during declaration is one of the simplest ways to create a 2D array in Java. This method allows developers to define the array and assign values to its elements in a concise manner.

Sep 9, 2021 · There are two ways you can declare and initialize an array in Java. The first is with the new keyword, where you have to initialize the values one by one. The second is by putting the values in curly braces.

Aug 30, 2024 · Java has a simple one-line syntax for initializing arrays: int[] numbers = {10, 20, 30, 40, 50}; This creates the array and assigns element values directly in one statement.