inheritance java class code example

Example 1: inheritance in java

// super class
class Animal
{
   void eat()
   {
      System.out.println("Animal is eating.");
   }
}
// subclass
class Lion extends Animal
{
   public static void main(String[] args)
   {
      Lion obj = new Lion();
      obj.eat();
   }
}

Example 2: how to make one java class inherit from another

public class Bicycle {
        
    // the Bicycle class has three fields
    public int cadence;
    public int gear;
    public int speed;
        
    // the Bicycle class has one constructor
    public Bicycle(int startCadence, int startSpeed, int startGear) {
        gear = startGear;
        cadence = startCadence;
        speed = startSpeed;
    }
        
    // the Bicycle class has four methods
    public void setCadence(int newValue) {
        cadence = newValue;
    }
        
    public void setGear(int newValue) {
        gear = newValue;
    }
        
    public void applyBrake(int decrement) {
        speed -= decrement;
    }
        
    public void speedUp(int increment) {
        speed += increment;
    }
        
}