持續記錄下自己遇到的java編碼技巧:
1. java.util.List.addAll(Collection<? extends String> c)
public static void main(String[] args) {

List<String> firstList = new ArrayList<String>();
firstList.add("a");
firstList.add("b");
firstList.add("c");

List<String> secondList = new ArrayList<String>();
secondList.addAll(firstList);

for (String s : secondList) {
System.out.println(s);
}
}
1. java.util.List.addAll(Collection<? extends String> c)













