I have a String on the variable coords which has the value of a String array, but it is not an array (outcome of toString).
String coords = "[[126,224],[255,232],[270,332],[106,444]]";
How can you create a String array from this String? An array doesn't have a #valueOf (as far as I know) and you can't easily split the characters.
Edit: I am looking for a String array which contains the four Strings as their own entries. E.g. "126,224", "255,322"..
One of the easiest ways to achieve that is:
String[] array = coords.replaceAll("\\[\\[", "").replaceAll("\\]\\]", "").split("\\],\\[");
The above code replaces all [[ and ]] with an empty character and then split by ],[.
Solution with Stream API and without replacing
Arrays.asList(coords.split("\\[\\[|]]|],\\[")).stream().filter(s -> !s.isEmpty()).forEach(System.out::println);
or in commont case
Arrays.asList(coords.split("\\[\\[|]]|],\\[")).stream()
.filter(s -> !s.isEmpty()).forEach(s -> {
//do whatever you want
});
Looking for something like this?
public class Tmp {
public static void test() {
String coords = "[[126,224],[255,232],[270,332],[106,444]]";
String arr[];
if (coords.length() < 4) {
arr = null;
} else {
arr = coords.substring(2, coords.length() - 2).split("\\],\\[");
}
for (String str : arr) {
System.out.printf("%s\n", str);
}
}
public static void main(String[] args) {
test();
}
}
String#split(String)?