Static Doubt

[maredu ramesh]

  
class Uber {
static int y = 2;
Uber(int x) { this(); y = y * 2; }
Uber() { y++; }
}
class Minor extends Uber {
Minor() { super(y); y = y + 3; }
public static void main(String [] args) {
new Minor();
System.out.println(y);
} }

Hi All,

In above code how subclass Minor can use static variable y,variable y belongs to super class Uber.How subclass can inherit it.

[marc weber]

Originally posted by maredu ramesh:
...how subclass Minor can use static variable y,variable y belongs to super class Uber.How subclass can inherit it.

Welcome to JavaRanch!

The keyword "static" does not prevent inheritance.

[Chandrasekhar Mangipudi]

HI. Static Variable values are avialable to all the instances of its class and its subclass.So Y is available to subclass constructor. And finally Output is 9.

[maredu ramesh]

class Animal {
  static  int  testInt =1;
    static void doStuff() {
        System.out.print("a ");
    }
}
public class Dog extends Animal {
  
    public void test(){
  
        System.out.println(testInt);
       dostuff();
    }
    public static void main(String[] args) {
        Dog d=new Dog();
        d.test();
    
    }
}
 

hi,In above code subclass Dog is able to inherit variable testInt, but it is not able to inherit method doStuff().When i try to compile above code i am getting error at doStuff() method call.Can you please explain what is difference between variable and method here.

[Hari Krishna]

Hi,

doStuff() method is inherited. You tried to invoke dostuff() method, not doStuff() method. Java is Case sensitive...

Regards,
Hari Krishna

[marc weber]

Also, remember that although static methods are inherited, they cannot be overridden. (See Overriding vs. Hiding.)