Java 将 string类型与list类型相互转换

代码实现

string转化为list

String ids = "111,222,333,444";
List<String> list = new ArrayList<>();
String str[] = ids.split(",");
list = Arrays.asList(str);

list转化为string

public void test() {
List<String> list = new ArrayList<String>();
list.add("aa");
list.add("bb");
list.add("cc");
String str=String.join(",", list);
System.out.print(str);
}

实现思路