Ustaw typ powrotu klasy Jenric w Javie
@SuppressWarnings("unchecked")
public <T extends Animal> T callFriend(String name) {
return (T)friends.get(name);
}
Mad developer
@SuppressWarnings("unchecked")
public <T extends Animal> T callFriend(String name) {
return (T)friends.get(name);
}jerry.addFriend("quaker", new Duck());
jerry.callFriend("quaker", /* unused */ new Dog()); // dies with illegal castjerry.<Dog>callFriend("spike").bark();