Stackoverflow: convert an array to List and stackoverflowlist.

Stackoverflow: convert an array to List and stackoverflowlist.
ProblemSuppose there is an array

Element[] array = {new Element(1),new Element(2),new Element(3)};

How to convert it to ArrayList <Element> arraylist?

Excellent answer

Arrays. asList (array) orArrays. asList (new Element (1), new Element (2), new Element (3 ))

However, some pitfalls should be noted: 1. The list generated in this way is fixed length. That is to say, if you add or remove it, UnsupportedOperationException will be thrown. 2. If you modify the array value, the corresponding value in the list will also change!
If you want to avoid these two pitfalls, use this method instead.

Collections.addAll(arraylist, array);

Original Site of stackoverflow:Http://stackoverflow.com/questions/157944/how-to-create-arraylist-arraylistt-from-array-t


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Converting list to String Array

For (int I = 0; I <s. length; I ++) {// Add the items in the s array to the list.
List. add (s [I]);
}

List. toArray (); // you can directly convert a list to an array. I cannot remember the method name clearly. You can check the api

Microsoft visual studio, I only defined a very large array a [116674]. Why is stackoverflowexception?

Stack Overflow ~

Try ArrayList ~