added-java-4

Java/Practical/UnderAge.java

@@ -0,0 +1,15 @@
+// File: UnderAge.java
+class UnderAge extends Exception {
+    private int age;
+
+    // Constructor to initialize age
+    public UnderAge(int age) {
+        this.age = age;
+    }
+
+    // Override toString() to display custom message with age value
+    @Override
+    public String toString() {
+        return "Under Age: " + age;
+    }
+}