JAVA字符串形式数值数组取值

字符串格式是这样的[[x1,y1,v1],[x2,y2,v2],[x3,y3,v3] ....[xn,yn,vn]]。想按顺序取出里面的v1...vn放到一个数组或者集合里，怎样最简洁？

 String s="[[x1,y1,v1],[x2,y2,v2],[x3,y3,v3] ....[xn,yn,vn]]";
Pattern pattern=Pattern.compile("v\\d+");
Matcher matcher = pattern.matcher(s);
while (matcher.find()){
System.out.println(matcher.start());
}

 Pattern pattern=Pattern.compile("v\\d+");
->
Pattern pattern=Pattern.compile("(?<=\\d+\\,\\d+\\,)\\d+");

str.replace(/(\［x\d+,y\d+,)|((?=\d+)\］)/g,"")