import java.util.ArrayList;

public class ArrayListPrac {

public static void main(String[] args) {

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

nameList.add("김신의");

nameList.add("김재");

System.out.println(nameList.get(0));

nameList.remove(0);

nameList.clear();

System.out.println(nameList.contains("김")); //값 확인

System.out.println(nameList.size());

System.out.println(nameList);

/**/

ArrayList<Integer> numList = new ArrayList<>();

numList.add(1);

numList.add(2);

numList.add(3);

System.out.println(numList);

for (int num:numList) {

System.out.println(num * num);

}

}

}