1 files changed, 20 insertions, 0 deletions
diff --git a/src/main/java/pokemon/RegexHelper.java b/src/main/java/pokemon/RegexHelper.java
new file mode 100644
index 0000000..1253499
--- /dev/null
+++ b/src/main/java/pokemon/RegexHelper.java
@@ -0,0 +1,20 @@
+package pokemon;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import com.mysql.cj.jdbc.exceptions.PacketTooBigException;
+
+public class RegexHelper {
+	public static boolean checkAlphaNumericInput(String str) {
+		Pattern pattern=Pattern.compile("^[A-Za-z0-9]{1,}$",Pattern.CASE_INSENSITIVE);
+		Matcher matcher=pattern.matcher(str);
+		return matcher.find();
+	}
+	public static boolean checkChatInput(String str) {
+		Pattern pattern=Pattern.compile(":",Pattern.CASE_INSENSITIVE);
+		Matcher matcher=pattern.matcher(str);
+		return !matcher.find();
+	}
+
+}