├List
│├LinkedList
│├ArrayList
│└Vector
│ └Stack
└Set
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class TestCollections {
public static void main(String args[]) {
//注意List是實現Collection接口的
List list = new ArrayList();
double array[] = { 112, 111, 23, 456, 231 };
for (int i = 0; i < array.length; i++) {
list.add(new Double(array[i]));
}
Collections.sort(list);
for (int i = 0; i < array.length; i++) {
System.out.println(list.get(i));
}
// 結果:23.0 111.0 112.0 231.0 456.0
}
}