java中划线正则表达式

在Java中，划线正则表达式可以通过以下方式实现： "\\d+-\\d+"。这个正则表达式的含义是匹配一个数字，后跟一个连字符，再跟着另一个数字。通过这个正则表达式，你可以匹配到类似"123-456"这样的字符串。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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