Program: How to copy array and increase size dynamically?

Java Arrays class provides few utility methods. One of the utility method Arrays.copyOf() helps us to create new array with new size and copy old arrays content to the new array at the same time. Below example shows how to copy an array and increase its size.

package com.java2novice.arrays;

import java.util.Arrays;

public class MyArrayCopy {
	
	public static void main(String a[]){
		
		int[] myArr = {2,4,2,4,5,6,3};
		System.out.println("Array size before copy: "+myArr.length);
		int[] newArr = Arrays.copyOf(myArr, 10);
		System.out.println("New array size after copying: "+newArr.length);
	}
}

Array size before copy: 7
New array size after copying: 10