// A compact source file is a whole class body: fields, methods, and nested types all sit at the top level.
// Nothing here is imported. List, Map, TreeMap, Collectors and BigDecimal all live in java.base.
String greeting = "hello";
int calls = 0;

record Point(int x, int y) {
    double distance() { return Math.sqrt(x * x + y * y); }
}

String shout(String s) {
    calls++;
    return s.toUpperCase() + "!";
}

void main() {
    List<String> words = List.of("banana", "apple", "cherry");
    Map<String, Integer> lengths = new TreeMap<>();
    for (String w : words) lengths.put(w, w.length());
    IO.println(shout(greeting));
    IO.println(words.stream().sorted().collect(Collectors.joining(", ")));
    IO.println(lengths);
    IO.println(new BigDecimal("1.10").add(BigDecimal.ONE));
    IO.println(new Point(3, 4) + " is " + new Point(3, 4).distance() + " from the origin");
    IO.println("calls so far: " + calls);
}