Manual array to collection copy

Reports code that uses a loop to copy the contents of an array into a collection.

A shorter and potentially faster (depending on the collection implementation) way to do this is using Collection.addAll(Arrays.asList()) or Collections.addAll().

Only loops without additional statements inside are reported.

Example:

void addAll(List<String> list, String[] arr) {
  for (int i = 0; i < arr.length; i++) {
    String s = arr[i];
    list.add(s);
  }
}

After the quick-fix is applied:

void addAll(List<String> list, String[] arr) {
  Collections.addAll(list, arr);
}

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Java, 233.SNAPSHOT

Last modified: 13 July 2023