How to initialize a boolean array?

Question

How to initialize an array of boolean datatype and assign false value to all the indices of the array?

Answer 1

You can do it in two ways:

Boolean[] arr=new boolean[size];

This would set all the values to false by default

Boolean[] arr=new boolean[size];

Arrays.fill(arr,Boolean.false);

This would set all the values to false explicitly.

Answer 2

To Initialize a boolean array in Java with all elements set to true (or any specific value). Iterate through each element using a loop. Here is how it works: 

 

public class BooleanArrayInitialization { 

    public static void main(String[] args) { 

        boolean[] boolArray = new boolean[5]; // Creates an array of 5 booleans (default: false) 

for (int i = 0; i < boolArray.length; i++) {\ 

            boolArray[i] = true; // Sets each element to true\ 

        } 

/// Print the array to check 

    for (boolean value : boolArray) { 

        System.out.println(value); // Outputs: true true true true true 

    } 

In this case, the for loop runs on the array and assigns all the elements to true.