Answers for "how to save the entries of arraylist to array in java"

how to convert a collection to array in java

List<String> list = new ArrayList<String>(); // Original list
String[] arr = list.toArray(new String[list.size()]);  // toArray function with array to be populated by this list as an argument.

convert list to array in java

Integer[] arr = new Integer[al.size()]; 
arr = al.toArray(arr);