And assuming that the following variables have been declared

And assuming that the following variables have been declared:

What is the output from the following statements?

Solution

public class cars {
   public void m1(){
   System.out.println(\"in car1\");  
   }
public void m2(){
   System.out.println(\"car 2\");
}
public String toString(){
   return \"vroom\";
}
}
class Truck extends cars {
public void m1() {
System.out.println(\"truck 1\");
}
}

public class cheggmain {

   /**
   * @param args
   */
   public static void main(String[] args) {
       // TODO Auto-generated method stub
       cars mycar = new cars();
       Truck mytruck = new Truck();
       System.out.println(mycar);
   mycar.m1();
   mycar.m2();
       System.out.println(mytruck);
       mytruck.m1();
       mytruck.m2();
  
   }

}

output:

vroom
in car1
car 2
vroom
truck 1
car 2