Question
Given the following classes which of the following will compile without error?

interface IFace{}
class CFace implements IFace{}
class Base{}
public class ObRef extends Base{

public static void main(String argv[]){
ObRef ob = new ObRef();
Base b = new Base();
Object o1 = new Object();
IFace o2 = new CFace();
}


}



1)o1=o2;

2)b=ob;

3)ob=b;

4)o1=b;
Answers



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