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

Description

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

Declaration

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

public static void setByte(Object array, int index, byte 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.setByte(Object array, int index, byte value) method.

package com.tutorialspoint;

import java.lang.reflect.Array;

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

      byte[] array = new byte[]{1,2, 3};

      Array.setByte(array, 0, (byte)2);
      Array.setByte(array, 1, (byte)3);
      Array.setByte(array, 2, (byte)4);

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

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

array[0] = 2
array[1] = 3
array[2] = 4