private static void isFixedNumeric() {
String regex="\d{6}";
String target="023300";
Pattern pattern=Pattern.compile(regex);
boolean matches = pattern.matcher(target).matches();
System.out.println(matches);
}
判断字符串长度是否为6的数字字符串
private static void isFixedNumeric() {
String regex="\d{6}";
String target="023300";
Pattern pattern=Pattern.compile(regex);
boolean matches = pattern.matcher(target).matches();
System.out.println(matches);
}
判断字符串长度是否为6的数字字符串
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