还不如得到8888开头的所有数字
然后"非礼"一下哈
import java.util.regex.*;public class FindNumber {
public static void main(String[] args) throws Throwable {
Pattern p = Pattern.compile("^8{4}\\d*");
Matcher m = p.matcher("88888");
System.out.println(!m.matches());
}
}
然后"非礼"一下哈
import java.util.regex.*;public class FindNumber {
public static void main(String[] args) throws Throwable {
Pattern p = Pattern.compile("^8{4}\\d*");
Matcher m = p.matcher("88888");
System.out.println(!m.matches());
}
}
import java.util.regex.*;public class test {
public static boolean IsValidNum(String str) {
Pattern mailpattern = Pattern.compile("8{4}\\d*");
Matcher matcher = mailpattern.matcher(str);
return !matcher.matches();
} public static void main (String[] args) {
System.out.println(IsValidNum("8"));
System.out.println(IsValidNum("83455"));
System.out.println(IsValidNum("1234"));
System.out.println(IsValidNum("8888123"));
System.out.println(IsValidNum("8888"));
} }
true
true
true
false
false