String与ArrayList的互相转化

ArrayList>转为String只需要调用toString()即可

String转为ArrayList>需要简单的模拟一下

public static ArrayList> getChangeToList(String sl)
    {
        ArrayList> arrayList=new ArrayList<>();
        while(sl.indexOf("{")!=-1) {
            Map map=new HashMap<>();
            String string = sl.substring(sl.indexOf("{")+1, sl.indexOf("}"));
            String[] strings=string.split(",");
            for(int i=0;i