In Java (or any other language with checked exceptions), when creating your own exception class, how do you decide whether it should be checked or unchecked? My instinct is to say that a checked exception would be called for in cases where the caller might be able to recover in some productive way, where as … Read more
How can I throw CHECKED exceptions from inside Java 8 streams/lambdas? In other words, I want to make code like this compile: public List<Class> getClasses() throws ClassNotFoundException { List<Class> classes = Stream.of(“java.lang.Object”, “java.lang.Integer”, “java.lang.String”) .map(className -> Class.forName(className)) .collect(Collectors.toList()); return classes; } This code does not compile, since the Class.forName() method above throws ClassNotFoundException, which is … Read more
For a number of years now I have been unable to get a decent answer to the following question: why are some developers so against checked exceptions? I have had numerous conversations, read things on blogs, read what Bruce Eckel had to say (the first person I saw speak out against them). I am currently … Read more
Joshua Bloch in “Effective Java” said that Use checked exceptions for recoverable conditions and runtime exceptions for programming errors (Item 58 in 2nd edition) Let’s see if I understand this correctly. Here is my understanding of a checked exception: try{ String userInput = //read in user input Long id = Long.parseLong(userInput); }catch(NumberFormatException e){ id = … Read more