Kodejava

package org.kodejava.example.lang;

import java.util.ArrayList;
import java.util.List;

public class InstanceOfExample {
    public static void main(String[] args) {
	Person p = new Person("John");
	Animal a = new Animal("Highland");
	Thing t = new Thing("Red");
	String text = "hello";
	Integer number = 1000;
	
	List list = new ArrayList();
	list.add(p);
	list.add(a);
	list.add(t);
	list.add(text);
	list.add(number);
	
	for (int i = 0; i < list.size(); i++) {
	    Object o = list.get(i);
	    if (o instanceof Person) {
		System.out.println("My name is " + ((Person)o).getName());
	    } else if (o instanceof Animal) {
		System.out.println("I live in " + ((Animal)o).getHabitat());		
	    } else if (o instanceof Thing) {
		System.out.println("My color is " + ((Thing)o).getColor());		
	    } else if (o instanceof String) {
		System.out.println("My text is " + o.toString());		
	    } else if (o instanceof Integer) {
		System.out.println("My value is " + ((Integer) o));		
	    }
	}
    }
}

class Person {
    private String name;
    
    public Person(String name) {
	this.name = name;
    }
    
    public String getName() {
	return name;
    }
}

class Animal {
    private String habitat;
    
    public Animal(String habitat) {
	this.habitat = habitat;
    }

    public String getHabitat() {
	return habitat;
    }
}

class Thing {    
    private String color;
    
    public Thing(String color) {
	this.color = color;
    }
    
    public String getColor() {
	return color;
    }    
}