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rdesmondrdesmond
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adding notes and examples from weeks 4-6
1 parent b374f03 commit 5ba939a

27 files changed

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‎week_1/AccessDemo1.java‎

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package week_1;
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public class AccessDemo1 {
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int defaultVar;
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public int publicVar;
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protected int protectedVar;
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private int privateVar;
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}

‎week_1/AccessDemo2.java‎

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package week_1;
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public class AccessDemo2 {
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public static void main(String[] args) {
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AccessDemo1 obj = new AccessDemo1();
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// default is just like protected, but not available to child classes
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System.out.println(obj.defaultVar);
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// public is available to anyone anywhere within this application
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System.out.println(obj.publicVar);
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// protected is only available within the same package, or to child classes
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System.out.println(obj.protectedVar);
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}
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}

‎week_4/Airplane.java‎

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package week_4;
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public abstract class Airplane implements VehicleInterface{
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// instance variables
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int speed;
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@Override
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public void accelerate(int rate) {
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// push throttle with right hand
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}
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@Override
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public void decelerate(int rate) {
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// pull back throttle with right hand
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}
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@Override
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public void stop() {
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// stop airplane
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}
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public void changeFlaps(){
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// local variable
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int flapAngle;
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}
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}

‎week_4/Car.java‎

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package week_4;
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public class Car implements VehicleInterface{
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@Override
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public void accelerate(int rate) {
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// push down gas pedal
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}
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@Override
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public void decelerate(int rate) {
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// push down brake pedal
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}
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@Override
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public void start() {
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// turn key with hand forward
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}
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@Override
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public void stop() {
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// turn key with right hand back
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}
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}

‎week_4/ChildClass.java‎

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package week_4;
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public class ChildClass extends ParentClass{
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int childVar;
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int var;
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public ChildClass(){
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super(12);
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super.var = 14;
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this.var = 78;
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this.parentVar = 789;
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super.parentVar = 678;
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childVar = 124;
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}
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}

‎week_4/FighterJet.java‎

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package week_4;
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public class FighterJet extends Airplane {
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@Override
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public void start() {
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// start the jet engines
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}
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@Override
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public void stop(){
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// stop the plane as normal
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// then fold in wings or something
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}
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}

‎week_4/Motorcycle.java‎

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package week_4;
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public class Motorcycle implements VehicleInterface{
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@Override
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public void accelerate(int rate) {
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// turn throttle with right hand
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}
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public void accelerate(double rate) {
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// turn throttle with right hand
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}
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@Override
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public void decelerate(int rate) {
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// squeeze brake level with either hand
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}
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@Override
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public void start() {
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// kickstart after turning key
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}
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@Override
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public void stop() {
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// turn key left
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}
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}

‎week_4/ParentClass.java‎

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package week_4;
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public class ParentClass {
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int var;
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int parentVar;
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public ParentClass(int var){
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this.var = var;
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}
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}

‎week_4/PropPlane.java‎

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package week_4;
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public class PropPlane extends Airplane {
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@Override
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public void start() {
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// winding and crank propeller with bare hands
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}
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}

‎week_4/VehicleDemo.java‎

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package week_4;
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public class VehicleDemo {
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public static void main(String[] args) {
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Car car = new Car();
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car.accelerate(10);
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Motorcycle moto = new Motorcycle();
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moto.accelerate(10);
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moto.accelerate(10.2);
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FighterJet jet = new FighterJet();
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jet.accelerate(10);
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jet.stop();
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jet.speed = 100;
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jet.changeFlaps();
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PropPlane propPlane = new PropPlane();
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propPlane.accelerate(10);
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System.out.println(10);
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System.out.println("ten");
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System.out.println(10.2);
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}
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}

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