Static Methods

[Senthil Nathan]

what happens if i extend a class to subclass and try to override the static method in superclass using following objects

1) subclass obj=new subclass()

2) superclass obj=new superclass()

3) superclass obj=new subclass()

what be internally happen which would be inherited anr override and which willl not override.

[Marilyn de Queiroz]

Hi, Notmine Jeoffrey

Welcome to JavaRanch! Please adjust your display name to meet the JavaRanch Naming Policy.
You can change it here.

Thanks!

Now, on to your question: You can try to override the static method in superclass, but it is impossible.

[Mark Henryson]

Hi,

If you want to override the static method in the super class, it will be called as Overhidding and not Overriding.

I given the sample program below. Just go thru it.

Note: I am also in learning curve. If anything wrong in this, pls post the reply.

 
class Super
{
   public static void method1()
   {
      System.out.println("Super class static method1");
   }
 
  public void method2()
  {
      System.out.println("Super class non-static method2");
  }
}
 
class Sub extends Super
{
   public static void method1()
   {
      System.out.println("Sub class static method1");
   }
 
  public void method2()
  {
      System.out.println("Sub class non-static method2");
  }
 
  public void method3()
  {
      System.out.println("Sub class non-static method3");
  }
}
 
class T1 
{
   public static void main(String args[])
   {
     Super sr = new Super();
     Sub sb = new Sub();
     Super sr1 = new Sub();
 
     sr.method1();    // Normal
     sr.method2();   // Normal
 
    sb.method1();  // Normal
    sb.method2();  // Normal
    sb.method3();  // Normal
 
    sr1.method1();  // Since method1 is static,  the complier 
                       will see the reference(sr1) is parent, 
                       so parent class method1 will be called (Overhidding)
 
    sr1.method2();  // since method2 is non-static, u get the 
                       sub class' method1.(normal overridding) 
 
 //   sr1.method3();  //won't work, since method3 is not in 
                        parent class, but we try to access 
                        thru parent class reference
 
                      //To avoid just cast it to sub class reference
 
   Sub sb1 = (Sub)sr1;
   sb1.method3();
  }
}