How to assign specific value to each element in Array

We can assign specific value to each element in the array in Java using the fill() method of java.util.Arrays class. This method is used mainly to initialize whole array at a time without looping through the array in Java. Let go through a tutorial.

Assign specific value to each element in Array

package com.javaindetail.initializearray;

import java.util.Arrays;

public class InitiaizeArray {

  public static void main(String[] args) {
    // An array of int
    int[] i = new int[5];
    // Initializing the array with specific value
    Arrays.fill(i, 1);
    // Printing the array
    System.out.println(Arrays.toString(i));

    // An array of double
    double[] d = { 1.5, 4.8, 5.9, 23.521 };
    // Initializing the array with specific value
    Arrays.fill(d, 1.0923);
    // Printing the array
    System.out.println(Arrays.toString(d));

    // An array of boolean
    boolean[] boo = new boolean[5];
    // Initializing the array with specific value
    Arrays.fill(boo, true);
    // Printing the array
    System.out.println(Arrays.toString(boo));

    // An array of char
    char[] c = new char[10];
    // Initializing the array with specific value
    Arrays.fill(c, 'j');
    // Printing the array
    System.out.println(Arrays.toString(c));

    // An array of String
    String[] str = { "Java", "In", "Detail" };
    // Initializing the array with specific value
    Arrays.fill(str, ".com");
    // Printing the array
    System.out.println(Arrays.toString(str));
  }
}

Output

[1, 1, 1, 1, 1]
[1.0923, 1.0923, 1.0923, 1.0923]
[true, true, true, true, true]
[j, j, j, j, j, j, j, j, j, j]
[.com, .com, .com]