public static void main(String[] arg){

//Arrays

int nums[];

int[] nums2;

int[] numbers = new int[4];

numbers[0]=1;

numbers[1]=2;

numbers[2]=3;

numbers[3]=4;

int[] numbersInit = new int[] {1,2,3,5};

int[] numbersInit2 = {1,2,3,5};

int[][] numbers2D = new int[3][];

numbers2D[0]= new int[2];

numbers2D[1]= new int[7];

numbers2D[2]= new int[17];

int[][][] numbers3D = {

{

{1,1},

{2,2}

},

{

{3,3},

{4,7}

},

{

{5,5},

{9,6}

}

};

System.out.println(numbers3D[1][1][1]);

System.out.println(numbers3D[2][1][0]);

for (int i=0; i<3;i++){

System.out.println(numbers3D[i][0][0]);

}

for (int element : numbersInit){

System.out.println(element);

}

//TASK

System.out.println("\n\nTASK\n\n");

ArrayList<Person> personList = new ArrayList<>();

personList.add(new Person("Tom1",12,170,70,"1"));

personList.add(new Person("Tom2",12,170,70,"1"));

personList.add(new Person("Tom3",12,170,70,"1"));

for (Person person: personList

) {

System.out.println(person);

}

ArrayList<String> personListNames = new ArrayList<>();

for (Person person: personList ) {

personListNames.add(person.toString());

}

String[] names = personListNames.toArray(new String[personListNames.size()]);

//TODO generic allToArrayOfStrings method ArrayList<?> => String[]

//TODO add method to ClassWithGeneric

String[] names2 = ClassWithGeneric.allToArrayOfStrings(personList);

for (String name: names2 ) {

System.out.println(name);

}

/*

}

}