import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "^(?=[a-zA-Z0-9]{1,80}$)[a-zA-Z]+[0-9]*$";
final String string = "a\n"
+ "a1\n"
+ "ab12\n"
+ "aAc\n"
+ "aAd12\n"
+ "ad123456789012345678901234567890123456789012345678901234567890123456789012345678\n"
+ "ad1234567890123456789012345678901234567890123456789012345678901234567890123456782\n"
+ "1\n"
+ "1a\n\n"
+ "a1111\n"
+ "a3333d";
final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
final Matcher matcher = pattern.matcher(string);
while (matcher.find()) {
System.out.println("Full match: " + matcher.group(0));
for (int i = 1; i <= matcher.groupCount(); i++) {
System.out.println("Group " + i + ": " + matcher.group(i));
}
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html