How to convert List – Long to long or vise versa?

There is no automatic conversion from array of primitive type to array of their boxed reference types or vise versa. You have to iterate for each data.

Converting List<Long> to long[]

1
2
3
4
5
6
7
List input = getSomeLongs(); // Assume some values
long[] output = new long[input.size()];
int index = 0;
for(Long val : input) {
	indexess[index] =  val;
	index++;
}

Converting long[] to List<Long>

1
2
3
4
5
long[] input = getSomeLongs(); // Assume some values
List output = new ArrayList();
for(long val : input){
	lst.add(val);
}
Editorial Team
Editorial Team

We are a group of young techies trying to provide the best study material for all Electronic and Computer science students. We are publishing Microcontroller projects, Basic Electronics, Digital Electronics, Computer projects and also c/c++, java programs.

Leave a Reply

Your email address will not be published. Required fields are marked *

Get the latest updates on your inbox

Be the first to receive the latest updates from Codesdoc by signing up to our email subscription.

    StudentProjects.in