Posted By: Anonymous
How might I convert an
ArrayList<String> object to a
String array in Java?
List<String> list = ..; String array = list.toArray(new String);
List<String> list = new ArrayList<String>(); //add some stuff list.add("android"); list.add("apple"); String stringArray = list.toArray(new String);
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.
Important update: Originally the code above used
new String[list.size()]. However, this blogpost reveals that due to JVM optimizations, using
new String is better now.