Fill an Integer Array in Java

Declaration :

public static void fill(int[] a, int val)

1	public static void fill(int[] a, int val)

Explanation :

Purpose	The java.util.Arrays.fill(int[] a int val) method assigns the specified int value to each element of the specified array of ints.
Parameters	a ===> This is the array to be filled.
	val ===> This is the value to be stored in all elements of the array.
Return Value	This method does not return any value.
Exception	NA

Java Program : Example

Below example will explain java.util.Arrays.fill() method.

package com.c4learn;
import java.util.Arrays;
public class ArrayDemo {
	public static void main(String[] args) {
		// Initialize an integer array
		int arr[] = new int[] { 10, 20, 30, 40, 50 };
		// Print the original array
		System.out.println("Original Array : ");
		for (int val : arr) {
			System.out.println("Original element is " + val);
		}
		// Use fill to place 5
		Arrays.fill(arr, 5);
		// Print the new array
		System.out.println("\nNew Array is : ");
		for (int val : arr) {
			System.out.println("New element is " + val);
		}
	}
}

package com.c4learn;

import java.util.Arrays;

public class ArrayDemo {

public static void main(String[] args) {

// Initialize an integer array

int arr[] = new int[] { 10, 20, 30, 40, 50 };

// Print the original array

System.out.println("Original Array : ");

for (int val : arr) {

System.out.println("Original element is " + val);

}

// Use fill to place 5

Arrays.fill(arr, 5);

// Print the new array

System.out.println("\nNew Array is : ");

for (int val : arr) {

System.out.println("New element is " + val);

}

Output of Program :

Original Array : 
Original element is 10
Original element is 20
Original element is 30
Original element is 40
Original element is 50
New Array is : 
New element is 5
New element is 5
New element is 5
New element is 5
New element is 5

Original Array :

Original element is 10

Original element is 20

Original element is 30

Original element is 40

Original element is 50

New Array is :

New element is 5

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