Java Vector向量最大值

import java.util.Collections;
import java.util.Vector;

public class Main {
   public static void main(String[] args) {
      Vector<Double> v = new Vector<Double>();
      v.add(new Double("3.4324"));
      v.add(new Double("3.3532"));
      v.add(new Double("3.342"));
      v.add(new Double("3.349"));
      v.add(new Double("2.3"));
      Object obj = Collections.max(v);
      System.out.println("The max element is:"+obj);
   }
}