int[] <-> ArrayList, String[] <=> ArrayList 변환

int [] -> ArrayList

ArrayList<String>list = new ArrayList<>(Arrays.asList(intArray));

 

ArrayList -> int []

for(int i=0;i<list.size();i++)

list.add(int[i]);

 

String -> ArrayList

String[] strData = {"1", "2", "3", "4", "5"};
ArrayList<String> arrData = new ArrayList<String>();

Collections.addAll(arrData, strData);

 

ArrayList -> String

List<String> arrData = new ArrayList<String>();

arrData.add(1);

String[] strData = arrData.toArray(new String[arrDate.size()]);