Copy the range of Character Array to another array in Java

Declaration :

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

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

Explanation :

Purpose	The java.util.Arrays.copyOfRange(char[] 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 ‘\u000’ 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 null characters to obtain the required length.
Exception	ArrayIndexOutOfBoundsException — If from < 0 or from > original.length() ,IllegalArgumentException — If 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 Character Array
		char[] arr1 = new char[] { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h' };
		// Print first array
		System.out.println("First array:");
		for (int i = 0; i < arr1.length; i++) {
			System.out.println(arr1[i]);
		}
		// Copy array elements to the new array with range 2 to 6
		char[] arr2 = Arrays.copyOfRange(arr1, 2, 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 Character Array

char[] arr1 = new char[] { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h' };

// Print first array

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

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

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

}

// Copy array elements to the new array with range 2 to 6

char[] arr2 = Arrays.copyOfRange(arr1, 2, 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:
a
b
c
d
e
f
g
h
New array:
c
d
e
f

First array:

New array:

Table of Content