How to avoid type-witching in Java?

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I need to write a method which depends on the type we're passing as an argument. For instance:

void foo(Object o){
   if(o instanceof Integer){
       System.out.println("Integer");
   } 

   if(o instanceof Date){
       System.out.println("Date");
   }

   //And so forth
}

In my particular case the method has much more complex structure, but it doesn't matter here.

Of course if-then-else clauses are things that an object oriented program try to eliminate.

I think polymorhism can be help of here. But I have not realized how it can be helpful. Any suggestions?

asked 1 min ago

St.Antario

2,111

How to avoid type-witching in Java?