Overriding i overloading

Following code fragment is given (Java 5): 1: class Human { 2: Human getIt() { 3: return this; 4: } 5: } 6: 7: class Worker extends Human { 8: // insert a single method here 9: } Which of the following methods would compile if inserted at line 8
Human getIt() { return this; } Worker getIt() { return this; } Object getIt() { return this; } int getIt() { return 1; } int getIt(int x) { return 1; } Object getIt(int x) { return this; }

Try catch finally

1. 		A try block can be followed either by a catch block or a finally block, or both.
   		A catch block must always be associated with a try block.
   		A finally block can never stand on its own (that is, without being associated with try block).

Haczyki v2

 if(20%4){} //zonk bo wynikiem jest int!!


String s = null; /* Nie bedzie NullPointerException!!!!!!!!!*/
String result = s != null && s.equals("test") ? "yes" : "no";

1. Kwestia || i | w jednym ifie + kwsestia && i & w jednym ifie
2. Jeśli casy w switchu się powtórzą to! => compilation error!!!!!!!!!