Java Array setBoolean() Method

The setBoolean() method of Array class is used to set the value of the indexed component of the specified array object to the specified boolean value.

Syntax

public static void setBoolean(Object array, int index, boolean z)
                       throws IllegalArgumentException,
                              ArrayIndexOutOfBoundsException

Parameter

array - the array

index - the index into the array

z - the new value of the indexed component

Returns

Does not return any value.

Throws

NullPointerException

IllegalArgumentException

ArrayIndexOutOfBoundsException -

NegativeArraySizeException

Example 1

  //import statement

import java.lang.reflect.Array;

public class ReflectArraySetBooleanExample1  {
   public static void main(String[] args) {

      boolean[] sarr = (boolean[]) Array.newInstance(boolean.class, 3);

      Array.setBoolean(sarr, 0, true);
      Array.setBoolean(sarr, 1, false);
      Array.setBoolean(sarr, 2, true);
       for(int i=0;i<sarr.length;i++)
       {
            System.out.println("sarr["+i+"] = " + Array.get(sarr, i));
       }
   }
}

Test it Now

Output:

sarr[0] = true
sarr[1] = false
sarr[2] = true

Example 2

import java.lang.reflect.Array;

public class ReflectArraySetBooleanExample2 {
   public static void main(String[] args) {

      boolean[] arr = (boolean[]) Array.newInstance(boolean.class, 3);
for(int j =0;j < arr.length ; j++)
{
    if(j>=2)
      Array.setBoolean(arr, j, false); //setBoolean method
    else
        Array.set(arr, j, true);
    
}
for(int i = 0; i<arr.length ; i++)
{
    System.out.println("arr["+0+"] = " + Array.getBoolean(arr, i));
}
      
      
   }
}

Test it Now

Output:

arr[0] = true
arr[0] = true
arr[0] = false

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Java Array class