[Java] ArrayList ensureCapacity

package framework22;
 
import java.util.ArrayList;
 
public class MainTest {
    public static void main(String[] args)
    {
        int a;
        
        ArrayList<Integer> list= new ArrayList<Integer>();
        
        list.ensureCapacity(500); // 미리 가용 list 크기늘리는 메소드.
        for(a=0;a<500;a++)
            list.add(a+1);
        
        for(a=0;a<500;a++)
            System.out.println(list.get(a));
    }
}