K2 Joshi

hi,
can any one explain me the following code. is this the example for overloading or overriding?
class Base{
public void amethod(int i) { }
}
public class Scope extends Base{
public static void main(String argv[]){
}
//Method Here
}
1) void amethod(int i) throws Exception {}
2) void amethod(long i)throws Exception {}
3) void amethod(long i){}
4) public void amethod(int i) throws Exception {}

answer is 2,3
my question is overloading mathod is in the same class & overriding method in different class.
but here answer 2&3 which means overloading mathod in another class.can we do that? i was under impression that overloading method only occurs in same class.
can any one explain me?
Thanks
Ketu

what will be the output for following question.

public class Cat {
int iq;
public Cat ( ) {
}
Cat(int i) { iq = i;}
}
public class TestIt extends Cat {
final Cat c = new Cat (6);
public static void main(String[] args ) {
c = new Cat(4);
c.iq = 5;
System.out.println("Cat IQ = " + c.iq);
return;
}
}

Thanks
Ketu

Given that a java.io.IOException might occur when calling the read() method of the BufferedInputStream, you can handle the exception by:





a) Listing a java.io.EOFException in a throws list.

b) Catch the java.lang.Exception using the throw statement.

c) Catch a java.io.EOFException using a try/catch clause.

d) Catch a java.lang.Exception using a try/catch 3

can any one help me about this problem.
Thanks in advance
Ketu

Thanks Everybody, so the final answer is all will compile but only a& b will run fine.
ketu

can any one please explain me which one is the valid statement & will compile fine.
a)String s = null; boolean y = true; if(y | | s.length()>0){}

b)String s = null; boolean y = false; if(y && s.length()>0){}

c)String s = null; boolean y = true; if(y && s.length()>0){}

d)String s = null; boolean y = false; if(y | | s.length()>0){}
Thanks in advance
Ketu

I am trying to solve this question can any one help.
int a = 5, b= 7 , c = 9
a= a^b^c;
what will be the answer & how.
Also do you where can i find the answer for ibm mock exam.
Thanks in advance
Ketu

Thanks a lot , I have got it clear.

byte b = 11;
byte b1 = 12;
b = b * b1 ; ( everything is byte then how it is converting to int.)
can any one help me?
Thanks in advance
Ketu

thanks JM, I understood the >> operator but I am little confuse about >>> operator & the negative part. Could you please explain that.
Thanks
Ketu