java-practical-04-fixes

Java/Practical/practical-04/exceptionDemo.java

@@ -0,0 +1,37 @@
+class UnderAge extends Exception {
+    private int age;
+
+    public UnderAge(int age) {
+        this.age = age;
+    }
+
+    @Override
+    public String toString() {
+        return "Under Age: " + age;
+    }
+}
+
+public class exceptionDemo {
+    public void test(int age) throws UnderAge {
+        if (age < 18) {
+            throw new UnderAge(age);
+        } else {
+            System.out.println("Age is valid: " + age);
+        }
+    }
+
+    public static void main(String[] args) {
+        exceptionDemo demo = new exceptionDemo();
+        try {
+            demo.test(16);
+        } catch (UnderAge e) {
+            System.out.println(e);
+        }
+
+        try {
+            demo.test(20);
+        } catch (UnderAge e) {
+            System.out.println(e);
+        }
+    }
+}