class PersonContainer<T extends Person>

class PersonContainer<T extends Person>

class StringSwapper implements Swapper<String> {...}

interface Pair<T1, T2> { T1 getFirst(); T2 getSecond(); }

this.queue.add(0, element);

public Constructor(T param){...}; public T method1() {...}

class Box<TYPE>{private TYPE value; ...}

route.getDirection() == direction

Create 02. Class Route

UPPERCASEVALUES - for Java Constants

enum Topic1 {VALUE1, ...}; "someStr" == Topic1.VALUE1;