Arrays class in java

In Java, the Arrays class is a built-in class that provides static methods to manipulate and work with arrays. The Arrays class contains various utility methods for performing common operations on arrays, such as sorting, searching, filling, and comparing.

Some of the commonly used methods of the Arrays class are:

1. sort(): This method sorts the elements of an array in ascending order.

2. binarySearch(): This method searches for a specific element in a sorted array using the binary search algorithm.

3. fill(): This method assigns a specified value to each element of an array.

4. copyOf(): This method creates a new array and copies a specified number of elements from the original array.

5. equals(): This method compares two arrays to determine if they are equal.

6. toString(): This method returns a string representation of an array.

Here's an example code snippet demonstrating the usage of some of the methods of the Arrays class:

import java.util.Arrays;

public class ArraysDemo {
   public static void main(String[] args) {
      int[] arr = { 10, 20, 30, 40, 50 };
      
      // Sorting the array
      Arrays.sort(arr);
      System.out.println("Sorted array: " + Arrays.toString(arr));
      
      // Searching for an element in the array
      int index = Arrays.binarySearch(arr, 30);
      System.out.println("Index of 30 in the sorted array: " + index);
      
      // Filling the array with a specific value
      int[] newArr = new int[5];
      Arrays.fill(newArr, 100);
      System.out.println("New array: " + Arrays.toString(newArr));
   }
}

Sorted array: [10, 20, 30, 40, 50]
Index of 30 in the sorted array: 2
New array: [100, 100, 100, 100, 100]