Copy the range of Long Array to another array in Java

Declaration :

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

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

Explanation :

Purpose	The java.util.Arrays.copyOfRange(long[] 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 0L 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 a long array
		long[] arr1 = new long[] { 100, 200, 300 };
		// 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 a new array with length 0 to 6
		long[] arr2 = Arrays.copyOfRange(arr1, 0, 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 a long array

long[] arr1 = new long[] { 100, 200, 300 };

// 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 a new array with length 0 to 6

long[] arr2 = Arrays.copyOfRange(arr1, 0, 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:
100
200
300
New array:
100
200
300
0
0
0

First array:

100

200

300

New array:

100

200

300

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