Question

I have a java code where i am trying to print a statement by passing an object of a class to a function . Following is the code :

import java.io.*;

class Abc
{

    public static void print(Object o)
    {
       o.name();
    }

    public static void main(String args[])
    {
       Vendor obj=new Vendor();
       print(obj);
    }
}

class Vendor
{
    public void name()
    {
       System.out.println("The name of the customer is chandeep");
    }

}

The error I am getting is, cannot find symbol name() in class Abc. I understand that’s an appropriate error but how do i solve it!?

Answer 1

It doesn’t work, because Object class has no such method as name(), and you are trying to invoke it on a reference of type Object.

Just change the method signature to take Vendor reference as parameter: –

public static void print(Vendor vendor) {
     vendor.name();
}

Since your method name() is in Vendor class, and you are passing a reference of Vendor, so you don’t need to use Object as formal parameter in your method.