java vector 예제

import java.util.Vector; 

public class VectorEx { 
	public static void main(String[] args) { 
		Vector v = new Vector(); 
		v.add("Hello"); 
		v.add(new Integer(4)); 
		v.add(new Double(3.14)); 
		System.out.println("벡터내의 요소 객체 수 :"+v.size()); 
		System.out.println("벡터의 현재 용량 :"+v.capacity()); 
		for(int i=0; i<v.size(); i++) { 
			Object obj = v.get(i); 
			if(obj instanceof String) { 
				String str = (String)obj; 
				System.out.println(str); 
				} 
			else if(obj instanceof Integer) { 
				Integer x = (Integer)obj; 
				int n = x.intValue(); 
				System.out.println(n); 
				}else if(obj instanceof Double) 
				{
					Double y = (Double)obj;
					double d = y.doubleValue();
					System.out.println(d);
				}
		}
		}
}