sachin jauhari

I am confused about taking SCBCD exam for EBB 2.0.

With EJB 3.0 already out and also Hibernate + Springs being
preferred in place of EJB's

Would this SCBCD exam for EJB 2.0 add weight to my resume.

I am planning to appear for SCJBCD exam ( EJB 2.1).
But i doubt if this certification will add weightage
to my Resume.
B'cos EJB 3.0 is already being out and also Spring + Hibernate
being preferred in place of EJB's.

Can some one clarify my doubts.

Will this certification help me.

Do we any Java API from SUN for BarCode generation.
Though i have foung free barcode generation code, but
looking for API from SUN.

Can any one explain the difference between TxDataSource and a DataSource ?

class Species() {}
class Animal extends Species(){}

Now the relationship is of type IS-A

Animal IS-A Species

public class Species { }
public class Animal {private Species species}

What type of relationship is between Species & Animal,IS -A or HAS-A ?

Ok. But does it give "String Version" as output is i replace
StringBuffer with Object

public class suncerti { public void method(StringBuffer sb) { System.out.println("StringBuffer Verion"); } public void method(String s) { System.out.println("String Version"); } public static void main(String args[]) { suncerti question = new suncerti(); question.method(null); } }
[ July 21, 2005: Message edited by: Barry Gaunt ]

thanks . I was able to debug ANT acript with eclipse 3.1

Do we any tool for debugging ant script which i can integrate with
eclipse.
If so pls provide the link.

This solution did not work out. Still getting the same problem on refresh.

When we do a refresh on a jsp page,
the same struts action gets called again and the record
is saved more than ones in the database.
How can i handle this.
I do not want to disable the browser history.
Do we have any other solution for this.

Why the Value of Integer.MIN_VALUE & -Integer.MIN_VALUE are same.

Why does the following give compilation error at line 1.
Class B extends Class A which is in a different package.

//in file A.java
package p1;
public class A
{
protected int i = 10;
public int getI() { return i; }
}

//in file B.java
package p2;
import p1.*;
public class B extends p1.A
{
public void process(A a)
{
a.i = a.i*2; // line 1
}
public static void main(String[] args)
{
A a = new B();
B b = new B();
b.process(a);
System.out.println(a.getI());
}
}

public static void main(String[] args) {

int i=0 , j;
i = i++;
j = i++;
System.out.print( i + " " + j );

}

Output is : 1 0

I could not understand the reason for this output