R Sawant

Thanks Rob... Just made sure there is no computer science fundamental involved here

What I really meant is why there is lack of consistency... What could have happened if table col index starts at 0 ??

Just wondering, why the index starts at 1 while using "java.sql.ResultSet.getString()" from JDBC API

Hi,
I am newbi to Apache ActiveMQ. Can I configure/create a Topic to receive a specified max number of JMS messages ? Lets say it should only have 100 messages at a time. If it receives more than 100, I should get a notification. Probably I will get JMSException. If this is true, can I know if this JMSException is due to maximum Topic capacity reached ? Thanks in advance

Faced this issue in last week while reading the same book.. figured out how to do this... giving the full sample code for mapping

package com.entity; import javax.persistence.*; @Entity @Table(name="USERS") public class User { @Id @Column(name="USER_ID") protected Long userId; protected String name; @OneToOne(cascade=CascadeType.ALL) @PrimaryKeyJoinColumn(name="USER_ID", referencedColumnName="BILLING_USER_ID") protected BillingInfo billingInfo; public Long getUserId() { return userId; } public void setUserId(Long userId) { this.userId = userId; } public BillingInfo getBillingInfo() { return billingInfo; } public void setBillingInfo(BillingInfo billingInfo) { this.billingInfo = billingInfo; } public String getName() { return name; } public void setName(String name) { this.name = name; } } ------------------------------------------------------- package com.entity; import javax.persistence.*; import javax.persistence.Entity; import javax.persistence.Table; import org.hibernate.annotations.*; @Entity @Table(name="BILLING_INFO") public class BillingInfo { @Id @Column(name="BILLING_USER_ID") @GeneratedValue(generator="foreign") @GenericGenerator(name="foreign", strategy = "foreign", parameters={@Parameter(name="property",value="user")}) protected Long userId; @OneToOne(mappedBy="billingInfo") User user; String billName; int billAmount; public Long getUserId() { return userId; } public void setUserId(Long userId) { this.userId = userId; } public String getBillName() { return billName; } public void setBillName(String billName) { this.billName = billName; } public int getBillAmount() { return billAmount; } public void setBillAmount(int billAmount) { this.billAmount = billAmount; } public User getUser() { return user; } public void setUser(User user) { this.user = user; } }

Important point to note the usage of "GenericGenerator". Just google for this if you need more info. Hope this helps. Thanks

regards,
Ramdas

Hi Ranchers,
How does the container associate a stateful session bean with the respective client. In case of a webserver we use cookie to identify the client. What do EJB container use to identify the request for a stateful session bean and use that particular Stateful session bean to handle the request. Any specific protocol used ? I googled for this but didnt find any suitable answer Am I missing anything ???

Hey Eric, good job mate...
Have to admit, you read a lot...
I have not gone through those many books in my whole career of 4 years

Hi all,
Why the default load factor of HashMap/HashSet is 0.75 instead of 1. How is it helpful?


Thanks
Ramdas.

Really nice book. Thanks a lot


Ramdas

Hi all,
My servlet is sending pdf in the response. I want this pdf to open the pdf in the browser only, instead of opening in the Acrobat reader. Can i control this. Please help me out. Its urgent.

Thanks
Ramdas

Thansk Sharn...

Hi folks,
i am a bit confused about the following type cast problem
interface I{} class A{} class Test{ public static void main(String args[]){ A a = new A(); I i = (I)a; } }

Here even I and A dont have any inheretance relationship, why it does'nt give compile time error.
If instead of a interface reference there is a class refrence on the LHS, it gives compile time error, which we all know why.

Ant one please...
Thanks in advance.

Ramdas

Hi all,
The java.util.Stack extends the Vector class. But for Stack, one should be able to insert or retrive the value from only one side i.e at the top of the stack. But since Stack extends Vector, we can use the inherited get(int index) method to access value other than the top of the stack value. It defeats the purpose of Stack, right? Then why does Stack extends Vector. Any explaination ?? Thanks in advance.

Ramdas

Hi all,
I want to create a XML string from a XML. Is it ok, if i use StringBuffer for this purpose. The idea is, go on appending the required data to the StringBuffer and finally convert the StringBuffer to String.
I am worried about one thing. If the XML is a bit large, does it affects the performance or is there any memory issue. Please advice. Thanks

Ramdas.

Hi all,
I want to create a XML string from a XML. Is it ok, if i use StringBuffer for this purpose. The idea is, go on appending the required data to the StringBuffer and finally convert the StringBuffer to String.
I am worried about one thing. If the XML is a bit large, does it affects the performance or is there any memory issue. Please advice. Thanks

Ramdas.