MyBirdClass, Java - rextester

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//'main' method must be in a class 'Rextester'.
//Compiler version 1.8.0_111

import java.util.*;
import java.lang.*;

class Bird{
   protected static int counter=0;
   protected   String birdName;
   protected   String bodyColor, beakColor;
   protected   boolean canFly;
    public Bird(){ counter++;}
    public Bird(String bn, String bc, String bkc,boolean cf) {
        birdName=bn; bodyColor=bc; beakColor=bkc; canFly=cf; counter++; }
    
    public void fly(int height)
    {
        System.out.println("I am "+ birdName+" flying at "+ height+" feet high in the sky");
    }
    public String getBirdName( ) { return birdName;}
    public static int getCount(){ return counter; }
}

class SingingBird extends Bird{
         
    public SingingBird(String bn,String bc, String bkc, boolean cf)
    {
        super(bn,bc,bkc,cf);
    }
    
    
}

class Rextester
{  
    public static void main(String args[])
    {
        Bird b1=new Bird("Parrot","Green","Red",true);
        b1.fly(200);
        SingingBird b2=new SingingBird("Ninghtingale","Black","White",true);
        b2.fly(300);
        Bird b3=new Bird();
        System.out.println("Total number of birds "+Bird.getCount());
        System.out.println("I am a "+b2.getBirdName());
        
    }
}

[ + ] Show input
Compilation time: 0.83 sec, absolute running time: 0.14 sec, cpu time: 0.12 sec, memory peak: 18 Mb, absolute service time: 0,98 sec