package org.gcube.socialnetworking.socialtoken; import java.util.regex.Matcher; import java.util.regex.Pattern; public class SanitizedHashTag { private static final String TAG_REGEX = "^#[\\w-_]*"; private static final Pattern pattern; static { pattern = Pattern.compile(TAG_REGEX); } protected String tag; protected String postfix; public SanitizedHashTag(String string) throws Exception { if(string==null || string.compareTo("")==0 || !string.startsWith("#")) { throw new Exception(string + "is not a valid TAG"); } Matcher matcher = SanitizedHashTag.pattern.matcher(string); if(matcher.find()) { tag = string.substring(matcher.start(), matcher.end()); postfix = string.substring(matcher.end()); }else { throw new Exception(string + "is not a valid TAG"); } } public String getTag() { return tag; } public String getPostfix() { return postfix; } }