Does Varargs create a new object when given an array?

**Cornix** · December 15th, 2013, 08:50 AM

Hi guys.

My question is: If I have a method which takes varargs, for example this:

public class Buffer {
 
	public void put(float ... data) {
		// do stuff!
	}
 
}

And I input an array, like this:

public class Application {
 
	private Buffer buffer;
	private float[] temp;
 
	public void submit() {
		buffer.put(temp);
	}
 
}

Would a new object be generated when "put" is called? Or would the array "temp" be used instead?

Thank you very much.

**andbin** · December 15th, 2013, 03:26 PM

Originally Posted by Cornix

Would a new object be generated when "put" is called? Or would the array "temp" be used instead?

The temp array is directly passed (a copy of the reference, obviously), no new array in this case.

**Cornix** · December 16th, 2013, 11:57 AM

Thank you for the answer. This is very helpful indeed.

Thread: Does Varargs create a new object when given an array?