config/settings.txt

var stream = MyClass.class.getClassLoader()
    .getResourceAsStream("config/settings.txt");

assert stream != null;
var text = new String(stream.readAllBytes());
System.out.println(text);
stream.close();

boolean leap = java.time.Year.isLeap(2025);
System.out.println(leap); // false

int year = java.time.LocalDate.now().getYear();
System.out.println(year + " — високосный? " + java.time.Year.isLeap(year));

for (int y = 2020; y <= 2030; y++) {
   if (java.time.Year.isLeap(y))
      System.out.println(y + " — високосный");
}