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content/ta/spring2018/cpsc220/apr3.md

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+# Lecture for April 3rd
+
+## Inheritance
+
+The *base class*, *super class*, or *parent class* is the initial class that we are working with. Let's say that you want to *extend* the class, or add additional functionality. The class that inherits from the parent class is called the *child class*, *subclass* or *derived class*.
+
+## Child Class Syntax
+
+```java
+public class Truck extends Car {
+    // Truck Appropriate Fields
+    // Necessary methods for truck
+}
+```
+
+This code adds all the methods from Car into the Truck class. You can then add methods that is specific to a Truck into the Truck class.
+
+A child class has all parent fields and access to all parent methods!
+
+## Visibility Modifiers
+
+Recall the words `public` and `private`
+
+The `public` modifier makes the field/method accessible by any class
+
+The `private` modifier makes the field/method only accessible within the method itself
+
+The protected modifier makes the field/method accessible within the same class or any subclasses.
+
+## Overriding a Method
+
+You can override a parent class method by declaring a method in the child class with the same...
+
+- name
+- number of paramters
+- parameter types
+
+but this method would have different behavior!
+