12.7. Conditional Operator: Introduce chaining ternay operators

src/branching_logic/conditional_operator.md

@@ -23,4 +23,31 @@ and then a value to use when that condition evaluates to `false`.
 CONDITION ? WHEN_TRUE : WHEN_FALSE
 ```
 
+Just like multiple if else statements, we have the concept to "chain" ternary operators. If the first condition is not true, it goes to the next condition and so on.
+
+```java
+~void main() {
+int age = 22;
+
+String message = age <= 0
+    ? "You do not exist yet"
+    : age > 100
+    ? "Sorry, you are too old."
+    : age < 25
+    ? "You cannot rent a car!"
+    : "You might be able to rent a car";
+
+IO.println(message);
+~}
+```
+
+It is same as before, you write a condition followed by a `?`, a value to use when that condition evaluates to `true`, a `:`,
+and then _chain_ another condition to use when that condition evaluates to `false`.
+
+Finally, if no condition was true, it matches the value after the final `:`.
+
+```java,no_run
+CONDITION ? WHEN_TRUE : CONDITION ? WHEN_TRUE : CONDITION ? WHEN_TRUE ... : WHEN_ALL_FALSE
+```
+
 [^ternary]: Some people will call this a ternary expression. Ternary meaning "three things." Same idea as tres leches.