Compared with Java

C# only has try, catch, finally, throw; but java also has throws that mark on method signature.

Example

            try{

            }catch(Exception ex){

            }finally{
                // finally is always executed, even if catch statement also throws exception.
            }
        

Finally throws exception

Exception is not stacked, meaning if the finally also throws exception, then it will override the catch throwed exception.

                try{
                    throw KeyNotFoundException("key not found");
                }catch(Exception ex){
                    throw new AggregateException("", new Exception("Resource Not found."));
                }finally{
                    throw new IndexOutOfRangeException("Out Of Range");
                }
                // the received exception by caller is IndexOutOfRangeException, AggregateException is overriden.
            

Shorthand

                try{

                }catch{

                }
                // same
                try{

                }catch(Exception e){

                }

                // re-throw the same exception;
                catch(Exception ex){
                    throw ex;
                }
                // same
                catch{
                    throw;
                }