exception-handling

Using spring-web-4.2.6, I have the following Controller and ExceptionHandler: @ControllerAdvice public class ExceptionsHandler { @ExceptionHandler(Exception.class) public ResponseEntity<ErrorDTO> HandleDefaultException(Exception ex) { ... } @ExceptionHandler(InternalError.class) public ResponseEntity<ErrorDTO> HandleInternalError(InternalError ex) { ... } } @RestController @RequestMapping("/myController") public class MyController { @RequestMapping(value = "/myAction", method = RequestMethod.POST) public boolean myAction() { throw new InternalError(""); } } For some reason, the

I defined a class foo as follows: class foo { private: static int objcnt; public: foo() { if(objcnt==8) throw outOfMemory("No more space!"); else objcnt++; } class outOfMemory { public: outOfMemory(char* msg) { cout << msg << endl;} }; ~foo() { cout << "Deleting foo." << endl; objcnt--;} }; int foo::objcnt = 0; And here's the main function: int main() { try { foo* p = new foo[3]; cout << "p in try " << p << endl; foo* q = new foo[7]; }catch(foo::outOfMemory& o) { cout << "Out-of-memory Exception Caught." << endl; } } It is obvious that the line "foo* q = new foo[7];" only creates 5 objects

Let's say we have the following program: class Fruit {} class Apple extends Fruit {} class Jonathan extends Apple {} class Orange extends Fruit {} public class Main { public static void main(String[] args) { Fruit[] fruit = new Apple[10]; try { fruit[0] = new Fruit(); // ArrayStoreException fruit[0] = new Orange(); // ArrayStoreException } catch(Exception e) { System.out.println(e); } } } Based on the Java documentation : Thrown to indicate that an attempt has been made to store the wrong type of object into an array of objects. I've read here that When array is created it remembers what type

I am trying to get accustomed to rxjava and I am trying to call the below QuoteReader in an Observable. I am not sure how to handle the exception thrown, public class QuoteReader { public Map<String, Object> getQuote() throws IOException{ OkHttpClient okHttpClient = new OkHttpClient(); Request request = new Request.Builder().url("http://quotes.rest/qod.json").build(); Gson gson = new Gson(); Map<String, Object> responseMap = null; try(Response response = okHttpClient.newCall(request).execute()) { responseMap = gson.fromJson(response.body().string(), Map.class); System.out.println("response map