java.lang.reflect.Array.setDouble() Method Example

Description

The java.lang.reflect.Array.setChar(Object array, int index, double value) method sets the value of the indexed component of the specified array object to the specified double value.

Declaration

Following is the declaration for java.lang.reflect.Array.setDouble(Object array, int index, double value) method.

public static void setDouble(Object array, int index, double value)
   throws IllegalArgumentException, ArrayIndexOutOfBoundsException

Parameters

• array − the array.

• index − the index.

• value − the new value of the indexed component.

Exceptions

• NullPointerException − If the specified object argument is null.

• IllegalArgumentException − If the specified object argument is not an array, or if the array component type is primitive and an unwrapping conversion fails.

• ArrayIndexOutOfBoundsException − If the specified index argument is negative, or if it is greater than or equal to the length of the specified array

Example

The following example shows the usage of java.lang.reflect.Array.setDouble(Object array, int index, double value) method.

package com.tutorialspoint;

import java.lang.reflect.Array;

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

      double[] array = new double[]{1.0,2.0,3.0};

      Array.setDouble(array, 0, 2.0);
      Array.setDouble(array, 1, 3.0);
      Array.setDouble(array, 2, 4.0);

      System.out.println("array[0] = " + Array.getDouble(array, 0));
      System.out.println("array[1] = " + Array.getDouble(array, 1));
      System.out.println("array[2] = " + Array.getDouble(array, 2));
   }
}

Let us compile and run the above program, this will produce the following result −

array[0] = 2.0
array[1] = 3.0
array[2] = 4.0