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文章浏览阅读338次。//向后匹配String a = "I paid $90 for 10 oranges, 12 pears and 8 apples. I saved $5 on ";Pattern p = Pattern.compile("(?<=\\$)\\d+");Matcher m = p.matcher(a);while (m.find ()){String group = m.group ();..._java 正则表达式 重头匹配