import java.util.List; | |
import java.util.Optional; | |
/** | |
* Test case for rule #2: "Never use Optional.get() unless you can prove that the Optional is | |
* present." | |
*/ | |
public class Marks2 { | |
class Customer { | |
int getID() { | |
return 42; | |
} | |
String getName() { | |
return "Fozzy Bear"; | |
} | |
} | |
String customerNameByID(List<Customer> custList, int custID) { | |
Optional<Customer> opt = custList.stream().filter(c -> c.getID() == custID).findFirst(); | |
// :: error: (method.invocation) | |
return opt.get().getName(); | |
} | |
} |