Question

JAVA中set类型怎么转换成vector类型？

RT

Answer 1

有个方法：addAll(Collection c); //可以接受Set和List类型的参数

例子：import java.util.*;
public class T{
public static void main(String[] args){

Set<String> set = new HashSet<String>();
set.add("a");
set.add("b");
set.add("c");

Vector<String> v = new Vector<String>();
v.addAll(set);
System.out.println(v);
}
}

Answer 2

public static Vector setToVector(Set from){
Vector to = new Vector();
Iterator i = from.iterator();
while(i.hasNext()){
to.add(i.next());
}
return to;
}

Answer 3

Set set = temp;
Vector v = new Vector(set);

Answer 4

set先转成list

list再转成vector