public static void main(String[] args) {
String[] strs = new String[]{"1111","2222","2111","1222"};
List<String> str1 = new ArrayList<>();
List<String> str2 = new ArrayList<>();
for (String string : strs) {
if (string.startsWith("1"))
{
str1.add(string);
}
if (string.startsWith("2"))
{
str2.add(string);
}
}
System.out.println(str1.size());
System.out.println(str2.size());
}