Copy the range of an Integer Array to another array in Java

Declaration :

public static int[] copyOfRange(int[] original, int from, int to)

1	public static int[] copyOfRange(int[] original, int from, int to)

Explanation :

Purpose	The java.util.Arrays.copyOfRange(int[] original int from int to) method copies the specified range of the specified array into a new array.The final index of the range (to) which must be greater than or equal to from may be greater than original.length in which case 0 is placed in all elements of the copy whose index is greater than or equal to original.length - from. The length of the returned array will be to - from.
Parameters	original ===> This is the array from which a range is to to be copied.
	from ===> This is the initial index of the range to be copied inclusive.
	to ===> This is the final index of the range to be copied exclusive.
Return Value	This method returns a new array containing the specified range from the original array truncated or padded with zeros to obtain the required length.
Exception	ArrayIndexOutOfBoundsException — If from < 0 or from > original.length() ,IllegalArgumentException — If from > to. ,NullPointerException — If original is null.

Java Program : Example

Below example will explain java.util.Arrays.copyOfRange() method.

package com.c4learn;
import java.util.Arrays;
public class ArrayDemo {
	public static void main(String[] args) {
		// Initialize an Integer Array
		int[] arr1 = new int[] { 5, 10, 15, 20, 25, 30, 35, 40 };
		// Print the array
		System.out.println("First array:");
		for (int i = 0; i < arr1.length; i++) {
			System.out.println(arr1[i]);
		}
		// Copy the array elements to new array with length 1 to 6
		int[] arr2 = Arrays.copyOfRange(arr1, 1, 6);
		// Print the new array
		System.out.println("New array:");
		for (int i = 0; i < arr2.length; i++) {
			System.out.println(arr2[i]);
		}
	}
}

package com.c4learn;

import java.util.Arrays;

public class ArrayDemo {

public static void main(String[] args) {

// Initialize an Integer Array

int[] arr1 = new int[] { 5, 10, 15, 20, 25, 30, 35, 40 };

// Print the array

System.out.println("First array:");

for (int i = 0; i < arr1.length; i++) {

System.out.println(arr1[i]);

}

// Copy the array elements to new array with length 1 to 6

int[] arr2 = Arrays.copyOfRange(arr1, 1, 6);

// Print the new array

System.out.println("New array:");

for (int i = 0; i < arr2.length; i++) {

System.out.println(arr2[i]);

}

Output of Program :

First array:
5
10
15
20
25
30
35
40
New array:
10
15
20
25
30

First array:

New array:

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