Java Program to Delete a given Element of Array

In this tutorial, We will learn writing java program to delete a given element of an Array and print the updated Array. Our program will delete the given element (which is specified by the user) from the array.

For Example

Case 1: if the given array is {1, 2, 3, 4} and the user gives input 3 to remove.

           The output should be {1, 2, 4}.

Case 2: if the given array is {9, 2, 4, 8} and the user gives input 4 to remove.

           The output should be {9, 2, 8}.

Java Program to Delete a given Element of Array

import java.util.*;  
public class Main
{
	public static void main(String[] args) {
		int temp, value;
		Scanner sc = new Scanner(System.in);
		System.out.println("Java Program to delete given element from Array");
        System.out.print("Enter the size of array: ");
        int size = sc.nextInt();
        int arr[] = new int[size];
        temp=size;
        for(int i=0; i<size; i++) {
            System.out.print("Please give value for index "+ i +" : ");
            arr[i] = sc.nextInt();
        }
        System.out.print("Enter the element to delete :");
        value=sc.nextInt();
        for(int i=0; i<size; i++)
        {
            if(arr[i]==value){
                for(int j=i; j<size-1; j++){
                    arr[j] = arr[j+1];
                }
                size--;
                i--;                                                                                                                                           ;
            }
        }
        if(temp==size){
            System.out.println("No element found "+value+" in array ");
            System.exit(0);
        }
        System.out.println("Rest elements of array after deleting "+value+" are :");
        for(int i=0; i<size; i++)
        {
            System.out.println(arr[i]);
        }
	}
}

Output

Java Program to delete given element from Array
Enter the size of array: 5
Please give value for index 0 : 4
Please give value for index 1 : 3
Please give value for index 2 : 2
Please give value for index 3 : 5
Please give value for index 4 : 3
Enter the element to delete :3
Rest elements of array after deleting 3 are :
4
2
5

Explanation

For the input array [4,3,2,5,3], and element to be delete is 3 from the array. Our program first iterate through the array element to find 3, once 3 has been found it, it removes by shifting all elements (which comes after 2), to one left. So here after deleting 3 our array become [4,2,5]