Object

[Anonymous]

Does compiler give error, if we say implicitly, a class extends Object though it is default ?
public class Base extends Object { }

[Jim Yingst]

You could try it and see if it compiles. It's a great way to find out this sort of thing.
[This message has been edited by Jim Yingst (edited February 12, 2000).]

[Anonymous]

I did so....Jim, but related question as follows. Help me get into that.
<PRE>
public class Base extends Object { //line 1
String objType;
public Base() { objType = "I am a Base type";
}
}
public class Derived extends Base { //line 2
public Derieved() { objType = "I am Derived type";
}
public static void main(String args{}) {
Derived D = new Derived();
}
}
</PRE>
A)Two class files, Base,class and Derived.class will be created.
B)The compiler will object to line 1..........(Answer)
C)The compiler will object to line 7.
My question is the same why answer is B ?

[This message has been edited by Umesh (edited February 13, 2000).]

[Thandapani Saravanan]

It is simple: You can't have two public classes in a compilation unit (ie .java file).
There are other errors (is it typos?): It should be,
public static void main(String args[]) {
and name of constructor: Derived.
[This message has been edited by Thandapani Saravanan (edited February 13, 2000).]

[Anonymous]

Thanx Thandapani for correcting my vision and typos!!!

[Frank Tollenaar]

Actually, if you read the questions (which you did not post) it says "The following lists the complete contents of the file named Derived.java:
The compiler objects to line 1 because the name of the first public class is "Base". Needs to be "Derived".
I could not figure this out until I read the answer. Hope this helps.
Frank