字符数组和List的互相转化

//字符数组转List
String[] s = {“a”,”b”,”c”};
List list= java.util.Arrays.asList(s);

//List转字符数组——例子一
List<String> list = new ArrayList<String>();
list.add(“a1″);
list.add(“a2″);
String[] toBeStored = list.toArray(new String[list.size()]);
for(String s : toBeStored) {
System.out.println(s);
}

//List转字符数组——例子二
List<String> list = new ArrayList<String>();
list.add(“a1″);
list.add(“a2″);

String[] toBeStored = new String[al.size()];
list.toArray(toBeStored);
for (String s : toBeStored) {
System.out.println(s);
}

//List转字符数组——例子三
List<String> list = new ArrayList<String>();
list.add(“a1″);
list.add(“a2″);

String[] toBeStored = new String[]{};
String[] str = al.toArray(toBeStored);
for (String s : str) {
System.out.println(s);
}

利用此转化：String str[] = list.toArray(new String[]{});
List list= java.util.Arrays.asList(String str[]);