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]*[a-zA-Z]+[a-zA-Z0-9]*\\.[a-zA-Z0-9]*\\.[a-zA-Z0-9]*|[a-zA-Z0-9]*\\.[a-zA-Z0-9]*[a-zA-Z]+[a-zA-Z0-9]*\\.[a-zA-Z0-9]*|[a-zA-Z0-9]*\\.[a-zA-Z0-9]*\\.[a-zA-Z0-9]*[a-zA-Z]+[a-zA-Z0-9]*)(~|\\-|\\+){0,1}[a-zA-Z0-9]+$";
final String string = "//good\n"
+ "rc0.05.00\n"
+ "0rc.05.00\n"
+ "0.rc05.00\n"
+ "0.05rc.00\n"
+ "rc0.rc05.00\n"
+ "rc0.05rc.00\n"
+ "rc0rc.rc05.00\n"
+ "rc0.rc05rc.00\n"
+ "rc0.rc05rc.rc00\n"
+ "rc0.rc05rc.00rc\n\n"
+ "0.0.0sr1+asdf\n"
+ "0.0.0sr1\n"
+ "errhand.LSD.asdf+dfsg\n\n\n"
+ "//bad\n"
+ "1.1\n"
+ "1.1.1\n"
+ "1.00.00\n"
+ "v1c.1.\n"
+ "1.v1c.\n"
+ "1.01.01~sdgf\n"
+ "1.v1c.asdf-sadf+asdf\n"
+ "~1c.1c.0\n"
+ "1c.1~c.0";
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