Lesson7

src/main/java/lesson6/App.java

@@ -0,0 +1,14 @@
+package lesson6;
+
+public class App {
+    public static void main(String[] args) {
+        Transport t1 = new Car("kia", 2010);
+        Transport t2 = new Cabrio("Chrysler", 1998, true);
+        Transport t3 = new Bike(2);
+
+        Transport[] transports = {t1, t2, t3};
+        for (Transport transport : transports){
+            transport.printInventionDate();
+        }
+    }
+}

src/main/java/lesson6/Bike.java

@@ -0,0 +1,24 @@
+package lesson6;
+
+public class Bike extends Transport{
+    int wheelsNumber;
+
+    public Bike(int wheelsNumber) {
+        this.wheelsNumber = wheelsNumber;
+    }
+
+    @Override
+    public void wroomWroom() {
+        System.out.println("BZZZZZZZZ");
+    }
+
+    @Override
+    public void printInventionDate() {
+        //any other logic
+        System.out.println("1950");
+    }
+
+    public final boolean requireHelmet() {
+        return true;
+    }
+}

src/main/java/lesson6/Cabrio.java

@@ -17,4 +17,11 @@ public boolean isHasHardTop() {
     public void setHasHardTop(boolean hasHardTop) {
         this.hasHardTop = hasHardTop;
     }
+
+    @Override
+    void printName() {
+        super.printName();
+    }
+
+
 }

src/main/java/lesson6/Car.java

@@ -1,6 +1,6 @@
 package lesson6;
 
-public class Car {
+public class Car extends Transport{
 
     protected String model;
     protected int year;
@@ -26,6 +26,30 @@ public int getYear() {
     public void setYear(int year) {
         this.year = year;
     }
+
+
+    @Override
+    public String toString() {
+        return model + " " + year;
+    }
+
+
+
+
+    void info() {
+        System.out.println(this);
+    }
+
+
+    @Override
+    public void printInventionDate() {
+
+    }
+
+    @Override
+    public void wroomWroom() {
+
+    }
 }
 
 

src/main/java/lesson6/Example.java

@@ -9,16 +9,20 @@ public class Example {
     public Example(int a, int b) {
         this.a = a;
         this.b = b;
-      //  this.total = a + b;
+        //  this.total = a + b;
     }
 
     public void info() {
         System.out.println(a + " + " + b + " = " + (a + b));
     }
 
+    public int getA() {
+        return a;
+    }
+
     public void setA(int a) {
         this.a = a;
-       // this.total = this.a + this.b;
+        // this.total = this.a + this.b;
     }
 
     public int getB() {
@@ -27,13 +31,9 @@ public int getB() {
 
     public void setB(int b) {
         this.b = b;
+        // this.total = this.a + this.b;
     }
 
-    public int getA() {
-        return a;
-    }
-
-
     public int getTotal() {
         return a + b;
     }

src/main/java/lesson6/Invention.java

@@ -0,0 +1,7 @@
+package lesson6;
+
+public abstract class Invention {
+
+
+    public abstract void printInventionDate();
+}

src/main/java/lesson6/RentApp.java

@@ -1,5 +1,7 @@
 package lesson6;
 
+import java.util.Arrays;
+
 public class RentApp {
 
     public static void main(String[] args) {
@@ -10,6 +12,13 @@ public static void main(String[] args) {
         Van van = new Van("Ford", 2010, 7);
         Car cabrio = new Cabrio("Peugeot", 2015, true);
 
+
+        System.out.println(car instanceof Van); //false
+        System.out.println(car instanceof Car); //true
+        System.out.println(van instanceof Car); //true
+        System.out.println(cabrio instanceof Van); //false
+        System.out.println(cabrio instanceof Transport); //true
+
         Car[] cars = {car, cabrio, van};
 
         for (Car c : cars) {
@@ -26,6 +35,20 @@ public static void main(String[] args) {
             }
         }
 
+        System.out.println();
+        System.out.println();
+        System.out.println();
+
+        Transport[] transports = {car, cabrio, van};
+
+        for (Transport transport : transports) {
+            System.out.println(transport);
+        }
+
+
+        System.out.println(Arrays.toString(transports));
+
+        //Transport transport = new Car();
 
         //System.out.println(van);
 

src/main/java/lesson6/Transport.java

@@ -0,0 +1,21 @@
+package lesson6;
+
+public abstract class Transport extends Invention{
+
+    protected String color;
+
+    void printName() {
+        System.out.println("Transport");
+    }
+
+    public abstract void wroomWroom();
+
+    @Override
+    public void printInventionDate() {
+        System.out.println("1990");
+    }
+
+
+
+    //public abstract int getCapacity();
+}

src/main/java/lesson6/Van.java

@@ -19,4 +19,10 @@ public int getSeats() {
     public void setSeats(int seats) {
         this.seats = seats;
     }
+
+    @Override
+    void printName() {
+        //super.printName(); - сначала вызывается родитель
+        System.out.println("This is a van");
+    }
 }

src/main/java/lesson7/App.java

@@ -0,0 +1,19 @@
+package lesson7;
+
+public class App {
+    public static void main(String[] args) {
+        Car car = new Car(60);
+        Car car2 = new Car(60);
+        GasStation gasStation = new GasStation(1000);
+
+        gasStation.info();
+
+        car.takeGasoline(gasStation);
+        car2.takeGasoline(gasStation);
+
+        gasStation.info();
+
+
+
+    }
+}

src/main/java/lesson7/Car.java

@@ -0,0 +1,31 @@
+package lesson7;
+
+public class Car {
+
+    /**
+     * Оюъем бензобака
+     */
+    private final int volume;
+
+    public Car(int volume) {
+        this.volume = volume;
+    }
+
+    public int getVolume() {
+        return volume;
+    }
+
+    public void takeGasoline(GasStation station) {
+        station.refill(volume);
+    }
+
+    public void findGasoline(GasStation[] stations) {
+        for (GasStation station : stations) {
+            if (station.getAvailable() < volume) {
+                continue;
+            }
+            station.refill(volume);
+            break;
+        }
+    }
+}

src/main/java/lesson7/GasStation.java

@@ -0,0 +1,34 @@
+package lesson7;
+
+public class GasStation {
+
+    private int available;
+
+    public GasStation(int available) {
+        this.available = available;
+    }
+
+    public int getAvailable() {
+        return available;
+    }
+
+    /**
+     * Заправить указанные кол-во литров
+     * @param amount
+     */
+    public void refill(int amount) {
+        this.available = this.available - amount;
+    }
+
+    @Override
+    public String toString() {
+        return "GasStation{" +
+                "available=" + available +
+                '}';
+    }
+
+
+    public void info() {
+        System.out.println(this);
+    }
+}

src/main/java/lesson7/StringApp.java

@@ -0,0 +1,44 @@
+package lesson7;
+
+import java.util.Arrays;
+import java.util.Locale;
+
+public class StringApp {
+
+    public static void main(String[] args) {
+        String str = "String";
+        System.out.println(Arrays.toString(str.toCharArray()));
+
+        String str2 = new String(str.toCharArray());
+
+
+        //str += str.toUpperCase();
+
+        str.toUpperCase(Locale.ROOT);
+
+        System.out.println(str + " " + str.toUpperCase());
+
+        System.out.println(str.startsWith("S"));
+
+        System.out.println(str.contains("ing"));
+
+        System.out.println(str.equalsIgnoreCase("STrIng"));
+
+        System.out.println(str.equals("STrIng"));
+
+        String stringUpper = "STrInG";
+        System.out.println(str.equals(stringUpper));//false
+        System.out.println(str.equalsIgnoreCase(stringUpper));//true
+
+        //String s = 1 +" " + 2 + " smth else   "+ 3; - плохая оптимизация(но можно использовать)
+
+        StringBuilder stringBuilder = new StringBuilder(str);
+        stringBuilder.append(1).append(" ").append(2);
+
+        String newString = stringBuilder.toString();
+
+        System.out.println(newString);
+
+    }
+
+}