Java下String和List<String>的互相转换

// List转换为String数组
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);    
}    
// String数组转换为List
String[] arr = new String[] {"1", "2"};  
List list = Arrays.asList(arr);