May 15, 2024 · The java.lang.reflect.Array.getLong() is an inbuilt method in Java and is used to return an element at the given index from a specified Array as a long. Syntax: Array.getLong(Object []array, int index) Parameters : This method accepts two mandatory parameters: array: The object array whose index is

Apr 15, 2025 · Read the array length as sc.nextInt() and store it in the variable len and declare an array int[len]. 2) To store elements in to the array for i=0 to i<length of an array read the element using sc.nextInt() and store the element at the index a[i].

In Java, you can get the first and last elements of an array using the following approaches: 1. Using Array Indexing: To get the first element, you can access it using index 0. To get the last element, you can access it using the index array.length - 1. Here's an example:

Apr 18, 2025 · How to find the length of an array using the length property; Difference between length, length() and size() methods; Various approaches to find the array length, including loops and Stream API; Different Ways to Find the Length or Size of an Array 1. Using the length Property (Best and Easiest Way)

Nov 9, 2011 · Starting with Java 8, the general purpose solution for a primitive array arr, and a value to search val, is: return IntStream.range(0, arr.length).filter(i -> arr[i] == val).findFirst().orElse(-1);

Array size, arrayName.length, holds its length. The following code outputs the length of each array by using its length property. public static void main(String args[]) { int a1[] = new int[10]; int a2[] = {1, 2, 3, 4, 5}; int a3[] = {4, 3, 2, 1}; System.out.println("length of a1 is " + a1.length);

Dec 9, 2024 · In Java, to find the index of a specific element in an array, we can iterate through it and checking each element. There are several ways to achieve this, including using loops, utility functions, Arrays.asList() for non-primitive arrays, and Streams.

Mar 18, 2023 · To access an element in array using its index, the formula to find the address of that element is given below. w= the number of bytes occupied by each element in array (integer take...

Feb 14, 2025 · There are basically two ways to create a one dimensional array in java that are as follows: 1. We can declare one-dimensional array and store values (or elements) directly at the time of its declaration, like this: int marks[ ] = { 90, 97, 95, 99, 100 }; // declare marks[ ] and initialize with five values.

Length Property: Each array comes with a built-in property to determine its size. Immutable Size: While the size of the array is fixed, its elements can be modified. Supports Iteration: Arrays can be easily traversed using loops. Prone to IndexOutOfBoundsException: Accessing invalid indices will result in a runtime exception.