ArrayList to array Conversion
How might I convert an
ArrayList<String>
object to a String[]
array in Java?List<String> list = ..;
String[] array = list.toArray(new String[list.size()]);
For example:
List<String> list =new ArrayList<String>();
//add some stuff
list.add("android");
list.add("apple");
String[] stringArray = list.toArray(new String[list.size()]);
The
toArray()
method without passing any argument returns Object[]
. So you have to pass an array as an argument, which will be filled with the data from the list, and returned. You can pass an empty array as well, but you can also pass an array with the desired size.Java 8 implements:
An alternative in Java 8:
String[] strings = list.stream().toArray(String[]::new);
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