|
| |
| 9. 33. 3. 我们在哪儿得到列举的？ |
|
|
Vector, Stack: elements() |
Dictionary, Hashtable, Properties: elements(), keys() |
|
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Vector;
public class MainClass {
public static void main(String args[]) throws Exception {
Vector v = new Vector();
v.add("a");
v.add("b");
v.add("c");
Collection col = v;
Enumeration e = Collections.enumeration(col);
for (; e.hasMoreElements();) {
Object o = e.nextElement();
System.out.println(o);
}
}
}
|
|
a
b
c |
|