java - 需要一种方法来打印 java 中正则表达式模式的先行部分吗？

Question

    String test = page;    Pattern p = Pattern.compile("^\\W+\\s(?=\\w+)");    Matcher m = p.matcher(test);    while(m.find())         System.out.println(m.group());

页面字符串如下所示:

InterestUnknown Unknown’s I do not own or know of any assets that should be listed in this category.$125Net value of all Home property (Schedules A through H)$128Net value of all Bank property (Schedule I)$253Net value of all property (Schedules A through I)

我需要存储最后一个值，比如 253 如何使用正则表达式找到它，然后将其保存在字符串中。

Answer 1

    String s = "Interest\n"
            + "Unknown Unknown’s \n"
            + "I do not own or know of any assets that should be listed in this category.\n"
            + "$125\n"
            + "Net value of all Home property (Schedules A through H)\n"
            + "$128\n"
            + "Net value of all Bank property (Schedule I)\n"
            + "$253\n"
            + "Net value of all property (Schedules A through I)";
    Pattern p = Pattern.compile("(?<=\\$)\\d+");
    Matcher m = p.matcher(s);
    while (m.find()) {
        System.out.println(m.group());
    }

输出:

125128253