完整示例：
private static final Pattern p = Pattern.compile("^([a-zA-Z]+)([0-9]+)(.*)");
public static void main(String[] args) {
// create matcher for pattern p and given string
Matcher m = p.matcher("Testing123Testing");
// if an occurrence if a pattern was found in a given string...
if (m.find()) {
// ...then you can use group() methods.
System.out.println(m.group(0)); // whole matched expression
System.out.println(m.group(1)); // first expression from round brackets (Testing)
System.out.println(m.group(2)); // second one (123)
System.out.println(m.group(3)); // third one (Testing)
}
}
由于你要查找第一个数字，因此可以使用以下正则表达式：
^\D+(\d+).*
并m.group(1)会返回你的第一个电话号码。请注意，带符号的数字可以包含减号：
^\D+(-?\d+).*
602392714
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