Java Arrays fill() method example

public static void equals(datatype[] a, dataype val)

The equals() method returns true if the two arrays are equal.

Requires Java 1.2 and up

Below is a java code demonstrates the use of fill() method of Arrays class. The example presented might be simple however it shows the behavior of the fill() method.

package com.javatutorialhq.java.examples;

import java.util.Arrays;

/*
 * A java example source code to demonstrate
 * the use of fill() method of Arrays class
 */

public class ArraysFillExample {

	public static void main(String[] args) {

		// initialize a new int array
		int[] values = new int[]{
			132,75,45,98
		};
		// fill the array with 0's
		Arrays.fill(values, 0);
		System.out.println(Arrays.toString(values));
		
		// fill with 1 from index 1 to 3
		Arrays.fill(values, 1,3,1);
		System.out.println(Arrays.toString(values));
				
	}
}

The above example demostrates the use of fill(method). Initially we have instantiated a new int array of 4 elements. We use the fill method with the int array and 0 as an argument. Our intention is to put 0 to all elements on our array. The result were printed out which shows that we have now a 4 element array with all elements being 0. Then we use another fill method to put 1’s on our array starting from index 1 until three.

Below is the sample output when you run the above example.

• Java Arrays Class Tutorial
• Java Tutorial

• Oracle Java Documentation