Created
October 1, 2016 15:46
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class Hash { | |
public static void main(String[] args) { | |
Car car1 = new Car(12345); | |
Car car2 = new Car(12345); | |
Car car3 = new Car(789); | |
System.out.println(car1.hashCode()); | |
System.out.println(car2.hashCode()); | |
System.out.println(car3.hashCode()); | |
} | |
} | |
class Car { | |
protected int speedMax = 100; | |
private long id; | |
public Car(long id) { | |
this.id = id; | |
} | |
public Car() { | |
} | |
@Override | |
public boolean equals(Object o) { | |
if(this == o) return true; | |
if(o == null || getClass() != o.getClass()) return false; | |
Car car = (Car) o; | |
if(id != car.id) return false; | |
return true; | |
} | |
public int getSpeedMax() { | |
return speedMax; | |
} | |
public String toString() { | |
return "This is car"; | |
} | |
} | |
class SportCar extends Car { | |
protected int speedMax = 300; | |
public int getSpeedMax() { | |
return speedMax; | |
} | |
} |
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