- Initializing a boolean variable : boolean b=true;
- In some cases we need to initialize all values of boolean array with true or false.
- In such cases we can use Arrays.fill() method
- Arrays.fill(array, Boolean.FALSE);
- java initialize boolean array with true: Arrays.fill(array, Boolean.FALSE);
- Lets see an example java program on how to assign or initialize boolean array with false or true values.
- package com.instanceofjava;
- import java.util.Arrays;
- /**
- * @author www.Instanceofjava.com
- * @category interview questions
- *
- * Description: Initialize boolean array values with false or true
- *
- */
- public class InitializeBoolean {
- public static void main(String[] args) {
- Boolean[] array = new Boolean[4];
- //initially all values will be null
- for (int i = 0; i
- System.out.println(array[i]);
- }
- Arrays.fill(array, Boolean.FALSE);
- // all values will be false
- for (int i = 0; i
- System.out.println(array[i]);
- }
- Arrays.fill(array, Boolean.TRUE);
- // all values will be false
- for (int i = 0; i
- System.out.println(array[i]);
- }
- }
- }
Output:
- null
- null
- null
- null
- false
- false
- false
- false
- true
- true
- true
- true
