inheritance in java with examples

example of inheritence in java:

import java.util.Scanner;

class Creature{
    private String eyeColor;
    private String skinColor;
    private int height;
    private int weight;
    private boolean gender;
    
    public Creature()
    {
        eyeColor="";
        skinColor="";
        height=0;
        weight=0;
        gender=true;
    }
    
    public Creature(String eyeColor, String skinColor, 
int height, int weight, String gender)
    {
        this.eyeColor=eyeColor;
        this.skinColor=skinColor;
        this.height=height;
        this.weight=weight;
        setGender(gender);
    }
    
    public void setGender(String gender)
    {
        if(gender=="male")
        this.gender=true;
        else if(gender=="female")
        this.gender=false;
        else 
System.out.println("error entering gender! it should be either male or female.");
    }
    
    public String getGender()
    {
        if(gender==true)
        return "male";
        else return "female";
    }
    
    public void setEyeColor(String eyeColor)
    {
        this.eyeColor=eyeColor;
    }
    
    public String getEyeColor()
    {
        return eyeColor;
    }
    
    public void setSkinColor(String skinColor)
    {
        this.skinColor=skinColor;
    }
    
    public String getSkinColor()
    {
        return skinColor;
    }
    
    public void setHeight(int height)
    {
        this.height=height;
    }
    
    public int getHeight()
    {
        return height;
    }
    
    public void setWeight(int weight)
    {
        this.weight=weight;
    }
    
    public int getWeight()
    {
        return weight;
    }
               
    public void walk()
    {
        System.out.println("walking...");
    }
    public void breath()
    {
        System.out.println(" is breathing...");
    }
    public String toString()
    {
        return " Eye color: "+eyeColor+", Skin color: "+skinColor+",
 Height: "+height+", Weight: "+weight+", gender: "+getGender();
    }    
}


class Human extends Creature
{
    private String name;

    public Human()
    {
        super("","",0,0,"male");
        name="";
    }
    
    public Human(String name, String eyeColor, String skinColor, 
int height, int weight, String gender)
    {
        super(eyeColor,skinColor,height,weight,gender);
        this.name=name;
    }
    
    public void setName(String name)
    {
        this.name=name;
    }
    public String getName()
    {
        return name;
    }
    /*public void walk()
    {
        System.out.println("walking...");
    }
    public void breath()
    {
        System.out.println(name+" is breathing...");
    }*/
    /*public String toString()
    {
        return "name: "+name+", Eye color: "+eyeColor+", Skin color: "+
skinColor+", Height: "+height+", Weight: "+weight+", gender: "+getGender();
    }*/
}

class Animal extends Creature
{
    private int price;
    
    public Animal()
    {
        super("","",0,0,"male");
        price=0;
    }
    
    public Animal(int price,String eyeColor, String skinColor, 
int height, int weight, String gender)
    {
        super(eyeColor,skinColor,height,weight,gender);
        this.price=price;
    }

    public void setPrice(int price)
    {
        this.price=price;
    }
    
    public int getPrice()
    {
        return price;
    }
               
    /*public void walk()
    {
        System.out.println("walking...");
    }
    public void breath()
    {
        System.out.println(name+" is breathing...");
    }
    public String toString()
    {
        return "name: "+name+", Eye color: "+eyeColor+", Skin color: "+
skinColor+", Height: "+height+", Weight: "+weight+", gender: "+getGender();
    }*/
}

class Main {
  public static void main(String[] args) {
  Human obj; //creating object from class Human

//creating instance of class Human
  obj=new Human("adnan","brown","white",185,92,"male"); 
  obj.breath();

//printing object information using the tostring() function
  System.out.println(obj.toString());   

  Human obj2; //creating object from class Human
  obj2=new Human(); //creating instance of class Human
  obj2.setName("reem");
  obj2.setGender("female");
  obj2.setEyeColor("green");
  obj2.setSkinColor("white");
  obj2.setHeight(160);
  obj2.setWeight(55);
  obj2.breath();
  System.out.println();
  //printing the object info using get functions:
  System.out.println(obj2.getName());
  System.out.println(obj2.getGender());
  System.out.println(obj2.getEyeColor());
  System.out.println(obj2.getSkinColor());
  System.out.println(obj2.getHeight());
  System.out.println(obj2.getWeight());
}
}