Add all 23 GoF design pattern implementations

03-behavioral/chain-of-responsibility/SupportTicket.java

@@ -0,0 +1,21 @@
+package chain;
+
+public class SupportTicket {
+
+    public enum Priority { LOW, MEDIUM, HIGH, CRITICAL }
+
+    private final String description;
+    private final Priority priority;
+
+    public SupportTicket(String description, Priority priority) {
+        this.description = description;
+        this.priority = priority;
+    }
+
+    public Priority getPriority() { return priority; }
+
+    @Override
+    public String toString() {
+        return "[" + priority + "] " + description;
+    }
+}